[Bug tree-optimization/55281] [4.8 Regression] ICE in build_int_cst_wide, at tree.c:1217 (with Ofast, ok with O3)
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55281 --- Comment #10 from vincenzo Innocente vincenzo.innocente at cern dot ch 2012-11-13 08:04:35 UTC --- confirmed fixed in gcc version 4.8.0 20121113 (experimental) [trunk revision 193471] (GCC)
[Bug bootstrap/55293] bootstrap failure: invalid conversion from 'char**' to 'const char**' [-fpermissive]
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55293 Eric Botcazou ebotcazou at gcc dot gnu.org changed: What|Removed |Added Component|c |bootstrap --- Comment #13 from Eric Botcazou ebotcazou at gcc dot gnu.org 2012-11-13 08:06:54 UTC --- I have gcc 4.7.2 bootstrapping on a few Solaris 8 servers, flawlessly. At least thus far. Every attempt and incantation of attempts on Solaris 10, within or without the documented approach has failed. So, go easy on me. I have in fact, done this before. Just never on Solaris 10. Solaris 10 has been there for almost a decade so people have bootstrapped GCC on it for almost as long. That's essentially the same as with previous releases. And, please, stop changing back the Component of the PR, that's pretty annoying.
[Bug target/54791] AIX-only: Constructors are not called in main program.
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54791 --- Comment #20 from Adi adivilceanu at yahoo dot com 2012-11-13 08:21:12 UTC --- Created attachment 28672 -- http://gcc.gnu.org/bugzilla/attachment.cgi?id=28672 the error while building gcc the error while building gcc 4.7.2
[Bug target/54791] AIX-only: Constructors are not called in main program.
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54791 --- Comment #21 from Adi adivilceanu at yahoo dot com 2012-11-13 08:29:51 UTC --- I am trying to build gcc 4.7.2 in order to apply the patch you suggested. I did the following: -download the gcc 4.7.2 -unzip and untar to to the root directory. mkdir /gcc-build cd /gcc-build ../gcc-4.7.2/configure --enable-languages=c,c++ make When making I get the errors from the attachment I put on Comment 20. I am using: AIX (oslevel -s = 6100-06-09-1228) make-3.80-1 mpfr-3.1.0-1 libmpc-0.9-1 mpfr-devel-3.1.1-1 gmp-5.0.5-1 gmp-devel-5.0.5-1 libmpc-devel-1.0.1-2 Do you know why I am getting this ?
[Bug c++/55287] GCC crashes and asks to file bug report
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55287 --- Comment #4 from Gordon Cichon gordoncichon at gmail dot com 2012-11-13 08:33:01 UTC --- Why is GCC comsuming so much memory? The program has 6.4MB source code, it is a single function. All optimizations are turned off. And there is 2GB memory in the system. Well, shouldn't it be possible to compile this program?
[Bug target/54429] [SH] SImode values get ferried through FPUL and FP regs for -O0
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54429
--- Comment #3 from Oleg Endo olegendo at gcc dot gnu.org 2012-11-13 08:44:43
UTC ---
I've tested this:
Index: gcc/config/sh/sh.c
===
--- gcc/config/sh/sh.c(revision 193423)
+++ gcc/config/sh/sh.c(working copy)
@@ -12113,6 +12113,11 @@
if (FP_REGISTER_P (regno) mode == SFmode)
return true;
+ if (FP_REGISTER_P (regno)
+ !(GET_MODE_CLASS (mode) == MODE_FLOAT
+ || GET_MODE_CLASS (mode) == MODE_VECTOR_FLOAT))
+return false;
+
if (mode == V2SFmode)
{
if (((FP_REGISTER_P (regno) (regno - FIRST_FP_REG) % 2 == 0)
on rev 193423. There are a few failures on targets with HW FPU:
FAIL: gcc.c-torture/execute/20080502-1.c compilation
FAIL: gcc.c-torture/execute/ieee/copysign1.c compilation
FAIL: gcc.dg/builtins-32.c (internal compiler error)
FAIL: gcc.dg/builtins-50.c (internal compiler error)
FAIL: gcc.dg/pr48335-7.c (internal compiler error)
I'll check out the details.
[Bug libstdc++/55308] New: /usr/ports/lang/gcc48/work/build/sparc64-portbld-freebsd10.0/libstdc++-v3/src/.libs/libstdc++.so.6: Undefined symbol __emutls_v._ThreadRuneLocale
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55308 Bug #: 55308 Summary: /usr/ports/lang/gcc48/work/build/sparc64-portbld-freeb sd10.0/libstdc++-v3/src/.libs/libstdc++.so.6: Undefined symbol __emutls_v._ThreadRuneLocale Classification: Unclassified Product: gcc Version: 4.8.0 Status: UNCONFIRMED Severity: normal Priority: P3 Component: libstdc++ AssignedTo: unassig...@gcc.gnu.org ReportedBy: me...@bristol.ac.uk FreeBSD 10.0-CURRENT #9 r239940 sparc64 Building gcc48 /bin/sh ../.././../gcc-4.8-20121014/libgcc/../mkinstalldirs /usr/ports/lang/gcc48/work/build/./gcc/xgcc -B/usr/ports/lang/gcc48/work/build/./gcc/ -B/usr/local/sparc64-portbld-freebsd10.0/bin/ -B/usr/local/sparc64-portbld-freebsd10.0/lib/ -isystem /usr/local/sparc64-portbld-freebsd10.0/include -isystem /usr/local/sparc64-portbld-freebsd10.0/sys-include-O2 -g -O2 -pipe -I/usr/local/include -fno-strict-aliasing -DIN_GCC -W -Wall -Wwrite-strings -Wcast-qual -Wstrict-prototypes -Wmissing-prototypes -Wold-style-definition -isystem ./include -fPIC -pthread -g -DIN_LIBGCC2 -fbuilding-libgcc -fno-stack-protector -shared -nodefaultlibs -Wl,--soname=libgcc_s.so.1 -Wl,--version-script=libgcc.map -o /libgcc_s.so.1.tmp -g -O2 -pipe -I/usr/local/include -fno-strict-aliasing -B./ _muldi3_s.o _negdi2_s.o _lshrdi3_s.o _ashldi3_s.o _ashrdi3_s.o _cmpdi2_s.o _ucmpdi2_s.o _clear_cache_s.o _trampoline_s.o __main_s.o _absvsi2_s.o _absvdi2_s.o _addvsi3_s.o _addvdi3_s.o _subvsi3_s.o _subvdi3_s.o _mulvsi3_s.o _mulvdi3_s.o _negvsi2_s.o _negvdi2_s.o _ctors_s.o _ffssi2_s.o _ffsdi2_s.o _clz_s.o _clzsi2_s.o _clzdi2_s.o _ctzsi2_s.o _ctzdi2_s.o _popcount_tab_s.o _popcountsi2_s.o _popcountdi2_s.o _paritysi2_s.o _paritydi2_s.o _powisf2_s.o _powidf2_s.o _powixf2_s.o _powitf2_s.o _mulsc3_s.o _muldc3_s.o _mulxc3_s.o _multc3_s.o _divsc3_s.o _divdc3_s.o _divxc3_s.o _divtc3_s.o _bswapsi2_s.o _bswapdi2_s.o _clrsbsi2_s.o _clrsbdi2_s.o _fixunssfsi_s.o _fixunsdfsi_s.o _fixunsxfsi_s.o _fixsfdi_s.o _fixdfdi_s.o _fixxfdi_s.o _fixtfdi_s.o _fixunssfdi_s.o _fixunsdfdi_s.o _fixunsxfdi_s.o _fixunstfdi_s.o _floatdisf_s.o _floatdidf_s.o _floatdixf_s.o _floatditf_s.o _floatundisf_s.o _floatundidf_s.o _floatundixf_s.o _floatunditf_s.o _divdi3_s.o _moddi3_s.o _udivdi3_s.o _umoddi3_s.o _udiv_w_sdiv_s.o _udivmoddi4_s.o enable-execute-stack_s.o unwind-dw2_s.o unwind-dw2-fde-dip_s.o unwind-sjlj_s.o unwind-c_s.o emutls_s.o -lc rm -f /libgcc_s.so if [ -f /libgcc_s.so.1 ]; then mv -f /libgcc_s.so.1 /libgcc_s.so.1.backup; else true; fi mv /libgcc_s.so.1.tmp /libgcc_s.so.1 ln -s libgcc_s.so.1 /libgcc_s.so /usr/ports/lang/gcc48/work/build/sparc64-portbld-freebsd10.0/libstdc++-v3/src/.libs/libstdc++.so.6: Undefined symbol __emutls_v._ThreadRuneLocale gmake[3]: *** [libgcc_s.so] Error 1 gmake[3]: Leaving directory `/usr/ports/lang/gcc48/work/build/sparc64-portbld-freebsd10.0/libgcc' gmake[2]: *** [all-stage1-target-libgcc] Error 2 gmake[2]: Leaving directory `/usr/ports/lang/gcc48/work/build' gmake[1]: *** [stage1-bubble] Error 2 gmake[1]: Leaving directory `/usr/ports/lang/gcc48/work/build' gmake: *** [bootstrap-lean] Error 2 *** [do-build] Error code 1
[Bug middle-end/52650] [4.8 Regression] FAIL: gcc.dg/torture/pr51106-2.c * (internal compiler error)
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=52650 Jakub Jelinek jakub at gcc dot gnu.org changed: What|Removed |Added Status|NEW |WAITING CC||jakub at gcc dot gnu.org --- Comment #11 from Jakub Jelinek jakub at gcc dot gnu.org 2012-11-13 09:01:37 UTC --- So, which exact testcase still fails on which target with what options? Tried gcc.dg/torture/20090618-1.c with -O1 -m32 with sparc-linux cross and can't reproduce - foo contains add %sp, -96, %sp mov 1, %o0 jmp %o7+8 add%sp, 96, %sp which is correct.
[Bug bootstrap/55293] bootstrap failure: invalid conversion from 'char**' to 'const char**' [-fpermissive]
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55293 --- Comment #14 from Jonathan Wakely redi at gcc dot gnu.org 2012-11-13 09:42:41 UTC --- (In reply to comment #10) The end result of the long long experiment is that there is something wrong in gcc 4.7.2 that make it near impossible to bootstrap. No, it means you haven't been able to bootstrap with the unconventional configuration you are using. From other people's reports if you stop trying to build 64-bit only or bootstrap with the system compiler it works, but you've said you don't want to do that. I hardly think that qualifies as impossible to bootstrap.
[Bug c++/55287] GCC crashes and asks to file bug report
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55287 --- Comment #5 from Jonathan Wakely redi at gcc dot gnu.org 2012-11-13 09:44:26 UTC --- 6.4MB in a single function is the problem. The compiler has to process that entire function at once. And 2GB is not a great amount.
[Bug other/55309] New: gcc's address-sanitizer 66% slower than clang's
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55309 Bug #: 55309 Summary: gcc's address-sanitizer 66% slower than clang's Classification: Unclassified Product: gcc Version: 4.8.0 Status: UNCONFIRMED Severity: enhancement Priority: P3 Component: other AssignedTo: unassig...@gcc.gnu.org ReportedBy: mar...@trippelsdorf.de Comparing gcc build times: CC=clang -fsanitize=address -w CXX=clang++ -fsanitize=address -w ~/gcc/configure --disable-bootstrap --disable-werror --disable-multilib --enable-languages=c,c++ with CC=gcc -faddress-sanitizer CXX=g++ -faddress-sanitizer ... and CC=gcc -fno-var-tracking -faddress-sanitizer CXX=g++ -fno-var-tracking -faddress-sanitizer ... Clang : nice -n 19 make -j4 1173.74s user 104.73s system 325% cpu 6:32.18 total gcc : nice -n 19 make -j4 3653.30s user 122.27s system 369% cpu 17:00.77 total gcc_no: nice -n 19 make -j4 2925.20s user 116.42s system 357% cpu 14:11.52 total perf top shows references_value_p() and value_member() on top.
[Bug middle-end/52650] [4.8 Regression] FAIL: gcc.dg/torture/pr51106-2.c * (internal compiler error)
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=52650 Eric Botcazou ebotcazou at gcc dot gnu.org changed: What|Removed |Added Status|WAITING |NEW CC||ebotcazou at gcc dot ||gnu.org --- Comment #12 from Eric Botcazou ebotcazou at gcc dot gnu.org 2012-11-13 10:10:21 UTC --- So, which exact testcase still fails on which target with what options? Tried gcc.dg/torture/20090618-1.c with -O1 -m32 with sparc-linux cross and can't reproduce - foo contains add %sp, -96, %sp mov 1, %o0 jmp %o7+8 add%sp, 96, %sp which is correct. There are no more execution failures on SPARC (modulo gcc.dg/builtin-object-size-8.c). The only remaining failures are: FAIL: gcc.dg/torture/pr51106-2.c -O0 (internal compiler error) FAIL: gcc.dg/torture/pr51106-2.c -O0 (test for excess errors) FAIL: gcc.dg/torture/pr51106-2.c -O1 (internal compiler error) FAIL: gcc.dg/torture/pr51106-2.c -O1 (test for excess errors) FAIL: gcc.dg/torture/pr51106-2.c -O2 (internal compiler error) FAIL: gcc.dg/torture/pr51106-2.c -O2 (test for excess errors) FAIL: gcc.dg/torture/pr51106-2.c -O3 -fomit-frame-pointer (internal compiler error) FAIL: gcc.dg/torture/pr51106-2.c -O3 -fomit-frame-pointer (test for excess errors) FAIL: gcc.dg/torture/pr51106-2.c -O3 -g (internal compiler error) FAIL: gcc.dg/torture/pr51106-2.c -O3 -g (test for excess errors) FAIL: gcc.dg/torture/pr51106-2.c -Os (internal compiler error) FAIL: gcc.dg/torture/pr51106-2.c -Os (test for excess errors) FAIL: gcc.dg/torture/pr51106-2.c -O2 -flto -flto-partition=none (internal compiler error) FAIL: gcc.dg/torture/pr51106-2.c -O2 -flto -flto-partition=none (test for excess errors) FAIL: gcc.dg/torture/pr51106-2.c -O2 -flto (internal compiler error) FAIL: gcc.dg/torture/pr51106-2.c -O2 -flto (test for excess errors) like everywhere else.
[Bug rtl-optimization/55270] ICE in get_loop_body, at cfgloop.c:823
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55270 Marek Polacek mpolacek at gcc dot gnu.org changed: What|Removed |Added Status|UNCONFIRMED |NEW Last reconfirmed||2012-11-13 CC||mpolacek at gcc dot gnu.org Target Milestone|--- |4.8.0 Ever Confirmed|0 |1 --- Comment #1 from Marek Polacek mpolacek at gcc dot gnu.org 2012-11-13 10:20:43 UTC --- Confirmed.
[Bug middle-end/55266] vector expansion: 36 movs for 4 adds
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55266
--- Comment #1 from Marc Glisse glisse at gcc dot gnu.org 2012-11-13 10:23:03
UTC ---
The first copy is PR 52436.
The second copy has a patch posted here:
http://gcc.gnu.org/ml/gcc-patches/2012-11/msg00900.html
The last copy would require turning:
gimple_assign constructor, _5, {_15, _18}, NULL, NULL
gimple_assign ssa_name, *x_2(D), _5, NULL, NULL
into:
gimple_assign ssa_name, *x_2(D), _15, NULL, NULL
gimple_assign ssa_name, MEM[(vec *)x_2(D) + 16B], _18, NULL, NULL
(not sure if endianness matters here)
which could maybe more easily be done by splitting the memory write (when the
vector type is not supported) into a suitable number of bit_field_ref
extractions and memory writes and relying on forwprop4 to simplify the
bit_field_refs of the constructor.
[Bug middle-end/52285] [4.7/4.8 Regression] libgcrypt _gcry_burn_stack slowdown
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=52285
Steven Bosscher steven at gcc dot gnu.org changed:
What|Removed |Added
Status|NEW |ASSIGNED
CC|steven at gcc dot gnu.org |
AssignedTo|unassigned at gcc dot |steven at gcc dot gnu.org
|gnu.org |
--- Comment #10 from Steven Bosscher steven at gcc dot gnu.org 2012-11-13
10:30:27 UTC ---
There are several reasons why RTL LIM cannot currently hoist the (frame) rtx.
The first is that in general it stays away from any HARD_REGISTER_P reg with
a 10-foot pole. For most hard registers this is probably a good strategy:
Anything that's in a real hard register at this point is there for a reason
(function return, global reg, whatever) and almost certainly not invariant in
a loop.
Second, RTL LIM only hoists expression that can be assigned to the original
SET_DEST of a single set. In the case of this PR, the insn in case is:
;; UD chains for insn luid 2 uid 15
;; reg 20 { }
;; reg 63 { d2(bb 4 insn 12) }
(insn 15 12 16 4 (set (reg:CCZ 17 flags)
(compare:CCZ (reg/v/f:DI 63 [ p ])
(reg/f:DI 20 frame))) PR52285.c:10 8 {*cmpdi_1}
(nil))
This fails in may_assign_reg_p because (reg:CCZ 17) can't be assigned to (it
is a hard register, and I suppose it has class NO_REGS), so the SET_SRC is
not even considered by find_invariant_insn as a potential invariant. I think
this condition can be relaxed with something like,
Index: loop-invariant.c
===
--- loop-invariant.c(revision 193454)
+++ loop-invariant.c(working copy)
@@ -874,11 +874,11 @@
dest = SET_DEST (set);
if (!REG_P (dest)
- || HARD_REGISTER_P (dest))
+ || HARD_REGISTER_P (dest)
+ || !may_assign_reg_p (dest))
simple = false;
- if (!may_assign_reg_p (SET_DEST (set))
- || !check_maybe_invariant (SET_SRC (set)))
+ if (!check_maybe_invariant (SET_SRC (set)))
return;
/* If the insn can throw exception, ...
Finally, RTL LIM cannot hoist parts of expressions. It only hoists the
SET_SRC as a whole, or nothing at all. I have patches for that, originally
developed to hoist addresses out of MEMs. I'll dust them off and see if
I can make it handle (reg:frame + CONST_INT) and other expressions that
involve eliminable regs.
[Bug middle-end/52285] [4.7/4.8 Regression] libgcrypt _gcry_burn_stack slowdown
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=52285 --- Comment #11 from Jakub Jelinek jakub at gcc dot gnu.org 2012-11-13 10:43:58 UTC --- I think (plus (frame) (const_int)) is likely not an issue (at least in the common case, could be only problem if eliminated into something that needs much bigger offset that doesn't fit into the instruction anymore), the problem is an eliminable register alone used somewhere where (plus (eliminate_to) (const_int small_int)) wouldn't be handled and thus would need to be reloaded. If loops are still around at LRA time, perhaps LRA should consider putting it before loop if register pressure is low, or LIM could just have extra code for this (first handle normal IV motions and just record if there are any eliminable regs not used inside of plus with const_int, and at the end if register pressure still isn't too high consider just creating a new insn that sets a pseudo to (frame) or other eliminable register before loop and replacing all uses of (frame) in the loop with that. I'm not saying it must be LIM, I'm just looking for suggestions where to perform this.
[Bug fortran/55282] [OOP] openmp directive and classes
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55282 Tobias Burnus burnus at gcc dot gnu.org changed: What|Removed |Added CC||burnus at gcc dot gnu.org --- Comment #5 from Tobias Burnus burnus at gcc dot gnu.org 2012-11-13 10:44:14 UTC --- (In reply to comment #1) Note that Fortran 2003 is not supported in OpenMP 3.1. This may change with OpenMP 4, but I'm not sure of that. The OpenMP ARB wasn't as active as I had hoped for, cf. Fortran 2003 in 1.6 Normative References in the OpenMP 4.0 RC, available at http://openmp.org/wp/openmp-specifications/ At a glance, it looks as if almost none of the Fortran 2003 features have been taken care of.
[Bug middle-end/43631] var-tracking inserts notes with non-NULL BLOCK_FOR_INSN in between basic blocks
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=43631 --- Comment #5 from Jakub Jelinek jakub at gcc dot gnu.org 2012-11-13 10:50:17 UTC --- Created attachment 28673 -- http://gcc.gnu.org/bugzilla/attachment.cgi?id=28673 gcc48-pr43631.patch Is this what you meant? make check-gcc RUNTESTFLAGS=guality.exp doesn't ICE with it anymore with verify_flow_info (); at the beginning as well as end of variable_tracking_main. The notes are intentionally in between bbs, and it is assumed that the cfg doesn't change after var-tracking pass, otherwise targets should disable var-tracking at its standard spot and perform it at the end of machine reorg pass (as e.g. ia64 and a few other targets do).
[Bug fortran/55297] [4.8 Regression] type-bound operator clashes with abstract interface
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55297 Tobias Burnus burnus at gcc dot gnu.org changed: What|Removed |Added Keywords||rejects-valid CC||burnus at gcc dot gnu.org Target Milestone|--- |4.8.0 --- Comment #2 from Tobias Burnus burnus at gcc dot gnu.org 2012-11-13 11:19:24 UTC --- Seems to be due to http://gcc.gnu.org/viewcvs?root=gccview=revrev=189022 for PR fortran/41951 and PR fortran/49591. In the resolve.c's resolve_typebound_intrinsic_op: 11546 if (gfc_check_new_interface (derived-ns-op[op], target_proc, 11547 p-where) == FAILURE) Here target_proc-name == negative and target_proc-ns-proc_name-name == athlete_module The symbol (i.e. derived type) is resolved twice: Once for the module athlete_module (= gfc_current_ns-proc_name) and then again for the abstract interface procedure sum_interface (= gfc_current_ns-proc_name). In either case, one has derived-ns-proc_name-name == athlete_module, which causes the symbol be added twice added to the same namespace. The question is whether it should be fixed by adding if (derived-ns != gfc_current_ns) return; Or using gfc_current_ns instead of derived-ns. Or what's the most appropriate fix.
[Bug c++/50012] [4.6 Regression] C++ front end misses -Wsign-compare warnings when extraneous parentheses are present
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50012 Paolo Carlini paolo.carlini at oracle dot com changed: What|Removed |Added Status|NEW |RESOLVED CC|ian at airs dot com, ian at | |gcc dot gnu.org | Resolution||FIXED --- Comment #11 from Paolo Carlini paolo.carlini at oracle dot com 2012-11-13 11:23:58 UTC --- Fixed.
[Bug other/55304] libsanitizer can't be used with GCC autoconf
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55304 --- Comment #3 from H.J. Lu hjl.tools at gmail dot com 2012-11-13 11:27:39 UTC --- One problem is AM_PROG_LIBTOOL, which is the part of libtool. GCC autoconf doesn't use libtool since we have in-tree libtool. To use GCC autoconf, we need also use the rest of libtool support in GCC source tree. That means it will make libsanitizer depends on GCC source tree.
[Bug c++/54091] internal compiler error in class method with many string objects
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54091 Paolo Carlini paolo.carlini at oracle dot com changed: What|Removed |Added Status|WAITING |RESOLVED Resolution||INVALID --- Comment #4 from Paolo Carlini paolo.carlini at oracle dot com 2012-11-13 11:28:28 UTC --- Feedback not forthcoming.
[Bug objc/55291] libsanitizer doesn't build multilib
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55291 Tobias Burnus burnus at gcc dot gnu.org changed: What|Removed |Added CC||burnus at gcc dot gnu.org --- Comment #4 from Tobias Burnus burnus at gcc dot gnu.org 2012-11-13 11:57:13 UTC --- See also http://gcc.gnu.org/ml/gcc-patches/2012-11/msg00766.html
[Bug c++/55287] GCC crashes and asks to file bug report
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55287 Manuel López-Ibáñez manu at gcc dot gnu.org changed: What|Removed |Added CC||manu at gcc dot gnu.org --- Comment #6 from Manuel López-Ibáñez manu at gcc dot gnu.org 2012-11-13 11:59:48 UTC --- (In reply to comment #4) Why is GCC comsuming so much memory? The program has 6.4MB source code, it is a single function. All optimizations are turned off. And there is 2GB memory in the system. Well, shouldn't it be possible to compile this program? That depends on the program, where the memory goes, possible bugs, etc. To start investigating this, GCC devs would need the info requested here: http://gcc.gnu.org/bugs/#report That said, even if you provided that info, it is unlikely that anyone will look into this bug, since it is a unusual case. If adding 2 or 4 more GBs of memory (or splitting the function into many small pieces) solves the issue, then it is simpler to just do that, and focus on fixing other bugs. Of course, nothing prevents you from investigating the issue yourself. Perhaps you are able to uncover a clear bug, memory leak or potential improvement. See: http://gcc.gnu.org/wiki/Speedup_areas http://gcc.gnu.org/wiki/Memory_management http://gcc.gnu.org/wiki/PerformanceTesting
[Bug tree-optimization/54073] [4.7/4.8 Regression] SciMark Monte Carlo test performance has seriously decreased in recent GCC releases
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54073 --- Comment #8 from Jakub Jelinek jakub at gcc dot gnu.org 2012-11-13 13:04:28 UTC --- Created attachment 28674 -- http://gcc.gnu.org/bugzilla/attachment.cgi?id=28674 gcc48-pr54073.patch On x86_64-linux on SandyBridge CPU with -O3 -march=corei7-avx I've tracked it down to the http://gcc.gnu.org/viewcvs?root=gccview=revrev=171341 change, in particular emit_conditional_move part of the changes. Before the change emit_conditional_move would completely ignore the predicate on the comparison operand (operands[1]), starting with r171341 it honors it. And the movsicc's ordered_comparison_operator would give up on the UNLT comparison in the MonteCarlo testcase, while ix86_expand_int_movcc expands it just fine and at least on that loop it is beneficial to use vucomisd%xmm0, %xmm1 cmovae %eax, %ebp instead of: .L4: addl$1, %ebx ... vucomisd%xmm0, %xmm2 jb .L4 The attached proof of concept patch attempts to just restore the 4.6 and earlier behavior by allowing in all comparisons. Of course perhaps it might be possible it needs better tuning than that, I meant it just as a start for discussions. vanilla trunk: ** ** ** SciMark2 Numeric Benchmark, see http://math.nist.gov/scimark ** ** for details. (Results can be submitted to p...@nist.gov) ** ** ** Using 2.00 seconds min time per kenel. Composite Score: 1886.79 FFT Mflops: 1726.97(N=1024) SOR Mflops: 1239.20(100 x 100) MonteCarlo: Mflops: 374.13 Sparse matmult Mflops: 1956.30(N=1000, nz=5000) LU Mflops: 4137.37(M=100, N=100) patched trunk: ** ** ** SciMark2 Numeric Benchmark, see http://math.nist.gov/scimark ** ** for details. (Results can be submitted to p...@nist.gov) ** ** ** Using 2.00 seconds min time per kenel. Composite Score: 1910.08 FFT Mflops: 1726.97(N=1024) SOR Mflops: 1239.20(100 x 100) MonteCarlo: Mflops: 528.94 Sparse matmult Mflops: 1949.03(N=1000, nz=5000) LU Mflops: 4106.27(M=100, N=100)
[Bug other/55310] New: libsanitizer con't be complier use gcc on windows
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55310 Bug #: 55310 Summary: libsanitizer con't be complier use gcc on windows Classification: Unclassified Product: gcc Version: 4.8.0 Status: UNCONFIRMED Severity: normal Priority: P3 Component: other AssignedTo: unassig...@gcc.gnu.org ReportedBy: squall...@gmail.com ../../../../libsanitizer/asan/asan_win.cc:31:0: warning: ignoring #pragma comment [-Wunknown-pragmas] #pragma comment(lib, dbghelp.lib) ^ ../../../../libsanitizer/asan/asan_win.cc:119:2: error: #error Please build the runtime with a non-debug CRT: /MD or /MT #error Please build the runtime with a non-debug CRT: /MD or /MT ^
[Bug bootstrap/55289] darwin bootstrap fails due to missing libsanitizer/interception/mach_override directory and files
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55289 --- Comment #3 from Dominique d'Humieres dominiq at lps dot ens.fr 2012-11-13 13:23:28 UTC --- You can find these files in.. http://llvm.org/svn/llvm-project/compiler-rt/branches/release_32/lib/interception/mach_override/ With this files I have been able to do a clean bootstrap at revision 193472 on x86_64-apple-darwin10. However, first, I have to supply the lib path for libasan when using -faddress-sanitizer: -L/opt/gcc/gcc4.8w/lib -lasan; second, the executable fails to run with: dyld: Symbol not found: _CFStringCreateCopy Referenced from: /opt/gcc/gcc4.8w/lib/libasan.0.dylib Expected in: flat namespace in /opt/gcc/gcc4.8w/lib/libasan.0.dylib Trace/BPT trap Looking at the web, it seems to be a known issue with darwin, but I have been unable to understand how it can be fixed. Indeed I also see pr55291.
[Bug bootstrap/55289] darwin bootstrap fails due to missing libsanitizer/interception/mach_override directory and files
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55289 --- Comment #4 from Iain Sandoe iains at gcc dot gnu.org 2012-11-13 13:54:52 UTC --- (In reply to comment #3) You can find these files in.. http://llvm.org/svn/llvm-project/compiler-rt/branches/release_32/lib/interception/mach_override/ With this files I have been able to do a clean bootstrap at revision 193472 on x86_64-apple-darwin10. However, first, I have to supply the lib path for libasan when using -faddress-sanitizer: -L/opt/gcc/gcc4.8w/lib -lasan; second, the executable fails to run with: dyld: Symbol not found: _CFStringCreateCopy this is found in the CoreFoundation framework (CFx is a good hint). what you need is to have -framework CoreFoundation on the link line - and I guess the configury c. needs to arrange this. Looking at the web, it seems to be a known issue with darwin, but I have been unable to understand how it can be fixed. Indeed I also see pr55291.
[Bug target/54791] AIX-only: Constructors are not called in main program.
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54791 --- Comment #22 from David Edelsohn dje at gcc dot gnu.org 2012-11-13 14:02:48 UTC --- The patch in PR 33704 makes no changes to libstdc++ or to any GCC , so I have no idea why you are seeing C++ errors compiling c-lang.c. Something else was modified.
[Bug bootstrap/55289] darwin bootstrap fails due to missing libsanitizer/interception/mach_override directory and files
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55289 --- Comment #5 from Jack Howarth howarth at nitro dot med.uc.edu 2012-11-13 14:06:46 UTC --- (In reply to comment #4) (In reply to comment #3) dyld: Symbol not found: _CFStringCreateCopy this is found in the CoreFoundation framework (CFx is a good hint). what you need is to have -framework CoreFoundation on the link line - and I guess the configury c. needs to arrange this. The bootstrap completes without any other changes. What we need in gcc/config/darwin.h is a LINK_SPEC entry for %faddress-sanitizer which passes -framework CoreFoundation -lasan to the linker.
[Bug target/54791] AIX-only: Constructors are not called in main program.
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54791 --- Comment #23 from Adi adivilceanu at yahoo dot com 2012-11-13 14:08:42 UTC --- I did not put the patch yet. This is just gcc 4.7.2 original sources. Why would they not compile?
[Bug bootstrap/55289] darwin bootstrap fails due to missing libsanitizer/interception/mach_override directory and files
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55289 --- Comment #6 from Dominique d'Humieres dominiq at lps dot ens.fr 2012-11-13 14:10:36 UTC --- what you need is to have -framework CoreFoundation on the link line - and I guess the configury c. needs to arrange this. When compiled with -faddress-sanitizer -framework CoreFoundation -lasan, the executable fails to run with dyld: lazy symbol binding failed: Symbol not found: ___asan_mach_override_ptr_custom Referenced from: /opt/gcc/gcc4.8w/lib/libasan.0.dylib Expected in: flat namespace dyld: Symbol not found: ___asan_mach_override_ptr_custom Referenced from: /opt/gcc/gcc4.8w/lib/libasan.0.dylib Expected in: flat namespace Trace/BPT trap
[Bug c++/55311] New: Cannot specialize template parameter of type 'const char *const' in 'using' alias
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55311
Bug #: 55311
Summary: Cannot specialize template parameter of type 'const
char *const' in 'using' alias
Classification: Unclassified
Product: gcc
Version: 4.8.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
AssignedTo: unassig...@gcc.gnu.org
ReportedBy: ni...@penneman.org
When providing arguments for a template class in a 'using' alias, specifying
arguments of type 'const char *const' doesn't work. It does work for an 'int'
pointer.
==
GCC version:
$ gcc -###
Using built-in specs.
COLLECT_GCC=/usr/x86_64-pc-linux-gnu/gcc-bin/4.8.0-alpha2012/gcc
COLLECT_LTO_WRAPPER=/usr/libexec/gcc/x86_64-pc-linux-gnu/4.8.0-alpha2012/lto-wrapper
Target: x86_64-pc-linux-gnu
Configured with:
/var/tmp/portage/sys-devel/gcc-4.8.0_alpha2012/work/gcc-4.8-2012/configure
--prefix=/usr --bindir=/usr/x86_64-pc-linux-gnu/gcc-bin/4.8.0-alpha2012
--includedir=/usr/lib/gcc/x86_64-pc-linux-gnu/4.8.0-alpha2012/include
--datadir=/usr/share/gcc-data/x86_64-pc-linux-gnu/4.8.0-alpha2012
--mandir=/usr/share/gcc-data/x86_64-pc-linux-gnu/4.8.0-alpha2012/man
--infodir=/usr/share/gcc-data/x86_64-pc-linux-gnu/4.8.0-alpha2012/info
--with-gxx-include-dir=/usr/lib/gcc/x86_64-pc-linux-gnu/4.8.0-alpha2012/include/g++-v4
--host=x86_64-pc-linux-gnu --build=x86_64-pc-linux-gnu --disable-altivec
--disable-fixed-point --with-ppl --with-cloog --disable-ppl-version-check
--with-cloog-include=/usr/include/cloog-ppl --enable-lto --enable-nls
--without-included-gettext --with-system-zlib --enable-obsolete
--disable-werror --enable-secureplt --enable-multilib
--with-multilib-list=m32,m64 --enable-libmudflap --disable-libssp
--enable-libgomp
--with-python-dir=/share/gcc-data/x86_64-pc-linux-gnu/4.8.0-alpha2012/python
--enable-checking=release --disable-libgcj --disable-libquadmath
--enable-languages=c,c++ --enable-shared --enable-threads=posix
--enable-__cxa_atexit --enable-clocale=gnu --enable-targets=all
--with-bugurl=http://bugs.gentoo.org/ --with-pkgversion='Gentoo
4.8.0_alpha2012'
Thread model: posix
gcc version 4.8.0-alpha2012 2012 (experimental) (Gentoo
4.8.0_alpha2012)
==
Code that fails to compile:
==
template const char *const C, typename T
struct A
{};
extern constexpr char HELLO_WORLD[] = hello world;
template typename T
using PartiallySpecialized = AHELLO_WORLD, T;
int main(int, char **)
{
AHELLO_WORLD, int original;
PartiallySpecializedint ps;
}
==
Compiler invocation/output:
$ g++ -std=c++11 -Wall -Wextra strbug.cxx
strbug.cxx:8:46: error: ‘hello world’ is not a valid template argument of
type ‘const char*’ because ‘hello world’ is not a variable
using PartiallySpecialized = AHELLO_WORLD, T;
^
strbug.cxx: In function ‘int main(int, char**)’:
strbug.cxx:12:22: warning: unused variable ‘original’ [-Wunused-variable]
AHELLO_WORLD, int original;
^
strbug.cxx:13:28: warning: unused variable ‘ps’ [-Wunused-variable]
PartiallySpecializedint ps;
^
==
Notice the first instantiation ('original') does not generate any errors or
warnings. The second instantiation ('ps') should be identical to the second.
Above code compiles without warnings and without errors on Clang 3.1.
[Bug middle-end/55142] [4.8 Regression] internal compiler error: in plus_constant, at explow.c:88
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55142 --- Comment #33 from Eric Botcazou ebotcazou at gcc dot gnu.org 2012-11-13 14:17:03 UTC --- Can we limit (zero_extend:DI (plus:SI (FOO:SI) (const_int Y))) to (plus:DI (zero_extend:DI (FOO:SI)) (const_int Y)) transformation to Y TARGET SPECIFIC VALUE? For x86-64, it is -16*1023*1024. That would really be hackish... I think that the (slightly less hackish) change in ix86_print_operand_address would be preferable.
[Bug other/55312] New: libbacktrace doesn't honor --disable-werror
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55312 Bug #: 55312 Summary: libbacktrace doesn't honor --disable-werror Classification: Unclassified Product: gcc Version: 4.8.0 Status: UNCONFIRMED Severity: normal Priority: P3 Component: other AssignedTo: unassig...@gcc.gnu.org ReportedBy: mar...@trippelsdorf.de When gcc is configured with --disable-werror and then build with: % make -j4 BOOT_CFLAGS=-march=native -O3 -pipe STAGE1_CFLAGS=-march=native -O3 -pipe CFLAGS_FOR_TARGET=-march=native -O3 -pipe CXXFLAGS_FOR_TARGET=-march=native -O3 -pipe profiledbootstrap One gets: ... /home/markus/gcc/libbacktrace/dwarf.c: In function ‘build_address_map’: /home/markus/gcc/libbacktrace/dwarf.c:1387:13: error: ‘val.u.string’ may be used uninitialized in this function [-Werror=maybe-uninitialized] lineoff = val.u.uint; ... /home/markus/gcc/libbacktrace/dwarf.c: In function ‘read_referenced_name’: /home/markus/gcc/libbacktrace/dwarf.c:2078:36: error: ‘val.u.string’ may be used uninitialized in this function [-Werror=maybe-uninitialized] name = read_referenced_name (ddata, u, val.u.uint, ... checking ctype.h usability... /home/markus/gcc/libbacktrace/dwarf.c: In function ‘read_function_entry’: /home/markus/gcc/libbacktrace/dwarf.c:2329:22: error: ‘val.u.string’ may be used uninitialized in this function [-Werror=maybe-uninitialized] function-name = val.u.string;
[Bug tree-optimization/55253] [4.8 Regression] Revision 193298 miscompiles sqlite with -Os
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55253 Martin Jambor jamborm at gcc dot gnu.org changed: What|Removed |Added CC||ian at airs dot com --- Comment #3 from Martin Jambor jamborm at gcc dot gnu.org 2012-11-13 14:26:51 UTC --- *** Bug 55305 has been marked as a duplicate of this bug. ***
[Bug tree-optimization/55305] invalid aggregate constprop
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55305 Martin Jambor jamborm at gcc dot gnu.org changed: What|Removed |Added Status|UNCONFIRMED |RESOLVED Resolution||DUPLICATE --- Comment #2 from Martin Jambor jamborm at gcc dot gnu.org 2012-11-13 14:26:51 UTC --- This is a duplicate of PR 55253, I'm testing a fix. *** This bug has been marked as a duplicate of bug 55253 ***
[Bug bootstrap/55289] darwin bootstrap fails due to missing libsanitizer/interception/mach_override directory and files
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55289 --- Comment #7 from Jack Howarth howarth at nitro dot med.uc.edu 2012-11-13 14:29:57 UTC --- (In reply to comment #6) what you need is to have -framework CoreFoundation on the link line - and I guess the configury c. needs to arrange this. When compiled with -faddress-sanitizer -framework CoreFoundation -lasan, the executable fails to run with dyld: lazy symbol binding failed: Symbol not found: ___asan_mach_override_ptr_custom Referenced from: /opt/gcc/gcc4.8w/lib/libasan.0.dylib Expected in: flat namespace dyld: Symbol not found: ___asan_mach_override_ptr_custom Referenced from: /opt/gcc/gcc4.8w/lib/libasan.0.dylib Expected in: flat namespace Trace/BPT trap This symbol is contained in mach_override.c which we currently don't build in the Makefiles. Note that llvm's cmake files show mach_override.c is compiled with -std=c99. # Custom flags: projects/compiler-rt/lib/interception/CMakeFiles/RTInterception.osx.dir/mach_override/mach_override.c.o_FLAGS = -std=c99 The interception/mach_override/mach_override.c.o object file will need to be linked into both libasan.dylib and libasan.a.
[Bug debug/55094] [4.7/4.8 Regression] ICE in maybe_record_trace_start, at dwarf2cfi.c:2224
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55094
Jakub Jelinek jakub at gcc dot gnu.org changed:
What|Removed |Added
Status|UNCONFIRMED |NEW
Last reconfirmed||2012-11-13
CC||jakub at gcc dot gnu.org,
||rth at gcc dot gnu.org,
||vmakarov at gcc dot gnu.org
Ever Confirmed|0 |1
--- Comment #1 from Jakub Jelinek jakub at gcc dot gnu.org 2012-11-13
14:31:11 UTC ---
Doesn't ICE on the trunk anymore since LRA merge, apparently because LRA
decides for some reason to use frame pointer anyway, despite
-fomit-frame-pointer -Os.
CCing Vlad to see why. Apparently it happens in:
665 if (ep-from_rtx == XEXP (x, 0)
666 || (ep-to_rtx == XEXP (x, 0)
667 ep-to_rtx != hard_frame_pointer_rtx))
668setup_can_eliminate (ep, false);
where ep-from_rtx is (frame), ep-to_rtx is (sp) and x is (pre_dec:SI
(reg/f:SI 7 sp)).
Is that intentional?
Anyway, testcase that also ICEs on 4.7 branch is e.g.
extern int puts (const char *);
int x;
int
main (int argc, char **argv)
{
if (argc)
{
puts (argv[0]);
x = 1;
__builtin_unreachable ();
}
x = 1;
__builtin_unreachable ();
}
with the same options - similar reason, crossjumping during jump2 crossjumps
bbs with different ARGS_SIZE final depth. For noreturn calls we've handled it
by adding REG_ARGS_SIZE note on the noreturn call I think, for unconditional
TRAP_IF we perhaps could do the same, but not sure what we can do for
__builtin_unreachable which expands to nothing..., with no outgoing edge from
the bb at all.
[Bug tree-optimization/55253] [4.8 Regression] Revision 193298 miscompiles sqlite with -Os
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55253 --- Comment #4 from Martin Jambor jamborm at gcc dot gnu.org 2012-11-13 14:31:23 UTC --- Created attachment 28675 -- http://gcc.gnu.org/bugzilla/attachment.cgi?id=28675 Fix I am currently bootstrapping this fix. I'll submit it to the mailing list if all goes fine.
[Bug target/55142] [4.8 Regression] internal compiler error: in plus_constant, at explow.c:88
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55142 H.J. Lu hjl.tools at gmail dot com changed: What|Removed |Added URL||http://gcc.gnu.org/ml/gcc-p ||atches/2012-11/msg00991.htm ||l Component|middle-end |target --- Comment #34 from H.J. Lu hjl.tools at gmail dot com 2012-11-13 14:32:23 UTC --- A patch is posted at http://gcc.gnu.org/ml/gcc-patches/2012-11/msg00991.html
[Bug other/55313] New: libsanitizer cannot be installed
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55313 Bug #: 55313 Summary: libsanitizer cannot be installed Classification: Unclassified Product: gcc Version: 4.8.0 Status: UNCONFIRMED Keywords: build Severity: normal Priority: P3 Component: other AssignedTo: unassig...@gcc.gnu.org ReportedBy: ebotca...@gcc.gnu.org This is on x86-64/Linux: Making install in asan make[3]: Entering directory `/red.a/gnatmail/gcc-x/build-red/x86_64-linux/gnat/obj/x86_64-pc-linux-gnu/libsanitizer/asan' make[4]: Entering directory `/red.a/gnatmail/gcc-x/build-red/x86_64-linux/gnat/obj/x86_64-pc-linux-gnu/libsanitizer/asan' test -z /red.a/gnatmail/gcc-x/build-red/x86_64-linux/gnat/gnat-bin/lib || /bin/mkdir -p /red.a/gnatmail/gcc-x/build-red/x86_64-linux/gnat/gnat-bin/lib /bin/bash ../libtool --mode=install /usr/bin/install -c libasan.la '/red.a/gnatmail/gcc-x/build-red/x86_64-linux/gnat/gnat-bin/lib' libtool: install: error: cannot install `libasan.la' to a directory not ending in /usr/gnat/lib make[4]: *** [install-toolexeclibLTLIBRARIES] Error 1 make[4]: Leaving directory `/red.a/gnatmail/gcc-x/build-red/x86_64-linux/gnat/obj/x86_64-pc-linux-gnu/libsanitizer/asan' make[3]: *** [install-am] Error 2 make[3]: Leaving directory `/red.a/gnatmail/gcc-x/build-red/x86_64-linux/gnat/obj/x86_64-pc-linux-gnu/libsanitizer/asan' make[2]: *** [install-recursive] Error 1 make[2]: Leaving directory `/red.a/gnatmail/gcc-x/build-red/x86_64-linux/gnat/obj/x86_64-pc-linux-gnu/libsanitizer' make[1]: *** [install-target-libsanitizer] Error 2 make[1]: Leaving directory `/red.a/gnatmail/gcc-x/build-red/x86_64-linux/gnat/obj' make: *** [install] Error 2
[Bug bootstrap/55289] darwin bootstrap fails due to missing libsanitizer/interception/mach_override directory and files
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55289 --- Comment #8 from Jack Howarth howarth at nitro dot med.uc.edu 2012-11-13 14:39:00 UTC --- Iain, This brings up the sticky situation of having to modify the Makefile.am file in libsanitizer/interception to add mach_override/mach_override.c to the interception_files source list and the Makefile.am file in libsanitizer/asan to link in the resulting interception/mach_override/mach_override.o object code to libasan. Any ideas on how to do this in a target specific manner cleanly?
[Bug objc/55291] libsanitizer doesn't build multilib
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55291 H.J. Lu hjl.tools at gmail dot com changed: What|Removed |Added CC||ebotcazou at gcc dot ||gnu.org --- Comment #5 from H.J. Lu hjl.tools at gmail dot com 2012-11-13 14:44:35 UTC --- *** Bug 55313 has been marked as a duplicate of this bug. ***
[Bug other/55313] libsanitizer cannot be installed
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55313 H.J. Lu hjl.tools at gmail dot com changed: What|Removed |Added Status|UNCONFIRMED |RESOLVED Resolution||DUPLICATE --- Comment #1 from H.J. Lu hjl.tools at gmail dot com 2012-11-13 14:44:35 UTC --- Dup. *** This bug has been marked as a duplicate of bug 55291 ***
[Bug target/55307] libgcc's __cpu_indicator_init does not check for avx correctly
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55307 H.J. Lu hjl.tools at gmail dot com changed: What|Removed |Added Status|UNCONFIRMED |NEW Last reconfirmed||2012-11-13 Component|other |target CC||areg.melikadamyan at gmail ||dot com, hjl.tools at gmail ||dot com Ever Confirmed|0 |1 Target Milestone|--- |4.8.0
[Bug c/55299] missed optimization: ASR idiom
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55299 H.J. Lu hjl.tools at gmail dot com changed: What|Removed |Added Status|UNCONFIRMED |NEW Last reconfirmed||2012-11-13 CC||areg.melikadamyan at gmail ||dot com, hjl.tools at gmail ||dot com Ever Confirmed|0 |1 --- Comment #1 from H.J. Lu hjl.tools at gmail dot com 2012-11-13 14:58:03 UTC --- clang generates: movb%sil, %cl sarl%cl, %edi movl%edi, %eax ret
[Bug tree-optimization/54073] [4.7/4.8 Regression] SciMark Monte Carlo test performance has seriously decreased in recent GCC releases
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54073 --- Comment #9 from Artem S. Tashkinov t.artem at mailcity dot com 2012-11-13 15:06:25 UTC --- (In reply to comment #8) The attached proof of concept patch attempts to just restore the 4.6 and earlier behavior by allowing in all comparisons. Of course perhaps it might be possible it needs better tuning than that, I meant it just as a start for discussions. The results look terrific, I hope this patch will be merged ASAP.
[Bug tree-optimization/54073] [4.7/4.8 Regression] SciMark Monte Carlo test performance has seriously decreased in recent GCC releases
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54073 --- Comment #10 from Uros Bizjak ubizjak at gmail dot com 2012-11-13 15:13:56 UTC --- (In reply to comment #8) The attached proof of concept patch attempts to just restore the 4.6 and earlier behavior by allowing in all comparisons. Of course perhaps it might be possible it needs better tuning than that, I meant it just as a start for discussions. Please see PR53346, from comment 14 onwards, especially H.J.'s comment: -quote- I was told that cmov wins if branch is mispredicted, otherwise cmov loses. We will investigate if we can improve cmov in GCC. -/quote-
[Bug tree-optimization/54073] [4.7/4.8 Regression] SciMark Monte Carlo test performance has seriously decreased in recent GCC releases
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54073 --- Comment #11 from Jakub Jelinek jakub at gcc dot gnu.org 2012-11-13 15:24:19 UTC --- (In reply to comment #10) Please see PR53346, from comment 14 onwards, especially H.J.'s comment: -quote- I was told that cmov wins if branch is mispredicted, otherwise cmov loses. We will investigate if we can improve cmov in GCC. -/quote- Possibly. But then still movsicc etc. isn't automatically the right thing if the comparison is ordered and wrong otherwise, but desirable/undesirable depending on whether the compiler can guess if the condition can be predicated well or not. Guess in MonteCarlo the x*x + y*y = 1.0 condition can't be predicted well and that is why it helps so much.
[Bug fortran/54818] [4.7/4.8 Regression] error: type mismatch in binary expression
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54818 Jakub Jelinek jakub at gcc dot gnu.org changed: What|Removed |Added Priority|P3 |P4 CC||jakub at gcc dot gnu.org
[Bug tree-optimization/54073] [4.7/4.8 Regression] SciMark Monte Carlo test performance has seriously decreased in recent GCC releases
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54073 Jan Hubicka hubicka at gcc dot gnu.org changed: What|Removed |Added CC||hubicka at gcc dot gnu.org --- Comment #12 from Jan Hubicka hubicka at gcc dot gnu.org 2012-11-13 15:54:22 UTC --- The decision on whether to use cmov or jmp was always tricky on x86 architectures. Cmov increase dependency chains, register pressure (both values needs to be loaded in) and has long opcode. So jump sequence, if well predicted, flows better through the out-of-order core. If badly predicted it is, of course, a disaster. I think more modern CPUs solved the problems with long latency of cmov, but the dependency chains are still there. This patch fixes a bug in a pattern rather than tweaks heuristic on predictability. As such I think it is OK for mainline. We should do something about rnflow. I will look into that. The usual wisdom is that lacking profile feedback one should handle non-loop branhces as inpredctable and loop branches as predictable, so all handled by ifconvert fals to the first category. With profile feedback one can see branch probability and if it is close to 0 or REG_BR_PROB_BASE tread the branch as predictable. We handle this with predictable_edge_p parameter passed to BRANCH_COST (that by itself is a gross, but for years we was not able to come with something saner) Honza
[Bug c++/54466] [C++11] Recursive Type Alias, Member Function Pointer, Segmentation Fault
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54466
--- Comment #10 from Dodji Seketeli dodji at gcc dot gnu.org 2012-11-13
16:07:50 UTC ---
Author: dodji
Date: Tue Nov 13 16:07:39 2012
New Revision: 193479
URL: http://gcc.gnu.org/viewcvs?root=gccview=revrev=193479
Log:
PR c++/54466 - ICE with alias template which type-id is const qualified
Consider this short example:
templatetypename T
struct X { };
templatetypename T
using Y = const XT;
using Z = Yint;
G++ crashes in lookup_class_template_1 while trying to build the alias
template instantiation Yint.
I think this is indirectly due to the fact that that
lookup_class_template_1 can now yield a const qualified type like
'const XT'.
As a consequence, the code in lookup_template_class_1 that was trying
to access the TYPE_STUB_DECL field of the result of
lookup_template_class_1 should now be adjusted to access the
TYPE_STUB_DECL of the main variant of the resulting type instead (and
that is TYPE_MAIN_DECL); because qualified types (constructed with
build_qualified_type) have their TYPE_STUB_DECL set to NULL.
Fixed thus and tested on x86_64-unknown-linux-gnu against trunk.
gcc/cp
PR c++/54466
* pt.c (lookup_template_class_1): TYPE_STUB_DECL should be
accessed on the main variant of the type.
gcc/testsuite/
* g++.dg/cpp0x/alias-decl-26.C: New test file.
In the example of this patch, g++ crashes when trying to build the
alias template Yint
Added:
trunk/gcc/testsuite/g++.dg/cpp0x/alias-decl-26.C
Modified:
trunk/gcc/cp/ChangeLog
trunk/gcc/cp/pt.c
trunk/gcc/testsuite/ChangeLog
[Bug c++/54466] [C++11] Recursive Type Alias, Member Function Pointer, Segmentation Fault
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54466 Dodji Seketeli dodji at gcc dot gnu.org changed: What|Removed |Added Status|ASSIGNED|RESOLVED Resolution||FIXED --- Comment #11 from Dodji Seketeli dodji at gcc dot gnu.org 2012-11-13 16:09:27 UTC --- Fixed in trunk (4.8).
[Bug other/55304] libsanitizer can't be used with GCC autoconf
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55304 H.J. Lu hjl.tools at gmail dot com changed: What|Removed |Added Status|UNCONFIRMED |NEW URL||http://gcc.gnu.org/ml/gcc-p ||atches/2012-11/msg01003.htm ||l Last reconfirmed||2012-11-13 Target Milestone|--- |4.8.0 Ever Confirmed|0 |1 --- Comment #4 from H.J. Lu hjl.tools at gmail dot com 2012-11-13 16:54:21 UTC --- This patch http://gcc.gnu.org/ml/gcc-patches/2012-11/msg01003.html fixes it.
[Bug fortran/55282] [OOP] openmp directive and classes
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55282 --- Comment #6 from Valery Weber valeryweber at hotmail dot com 2012-11-13 16:57:28 UTC --- Dear All I posted a comment on the openmp forum about the f2003 features. Complaining there may help, who knows? Valery
[Bug target/41993] [sh] ICE in create_pre_exit, at mode-switching.c:399
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=41993 --- Comment #14 from uros at gcc dot gnu.org 2012-11-13 16:59:44 UTC --- Author: uros Date: Tue Nov 13 16:59:37 2012 New Revision: 193480 URL: http://gcc.gnu.org/viewcvs?root=gccview=revrev=193480 Log: PR target/41993 * mode-switching.c (create_pre_exit): Set return_copy to last_insn when copy_start is a function return regno instead of pseudo. Skip debug instructions in instruction scan loop. Modified: trunk/gcc/ChangeLog trunk/gcc/mode-switching.c
[Bug tree-optimization/55253] [4.8 Regression] Revision 193298 miscompiles sqlite with -Os
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55253 Martin Jambor jamborm at gcc dot gnu.org changed: What|Removed |Added URL||http://gcc.gnu.org/ml/gcc-p ||atches/2012-11/msg01008.htm ||l --- Comment #5 from Martin Jambor jamborm at gcc dot gnu.org 2012-11-13 17:05:06 UTC --- I have submitted a fix to the mailing list: http://gcc.gnu.org/ml/gcc-patches/2012-11/msg01008.html
[Bug fortran/48858] Incorrect error for same binding label on two generic interface specifics
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=48858 Juno Krahn juno.krahn at nih dot gov changed: What|Removed |Added CC||juno.krahn at nih dot gov --- Comment #13 from Juno Krahn juno.krahn at nih dot gov 2012-11-13 18:14:43 UTC --- I just came across this issue, using code that used to compile under gfortran. The standards reference in the previous comment is in reference to program units, which includes binding labels. It asserts that global identifiers are unique entities, but interface definitions are not program units. Multiple interfaces can refer to the same unique. I don't have a reference, but I remember this specific issue being discussed at one point with the Fortran Standards committee, and the consensus was that multiple interfaces to a single BIND(C) name is both valid and useful.
[Bug target/55142] [4.8 Regression] internal compiler error: in plus_constant, at explow.c:88
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55142 --- Comment #35 from H.J. Lu hjl.tools at gmail dot com 2012-11-13 18:21:30 UTC --- This regression is triggered by revision 188008: http://gcc.gnu.org/ml/gcc-cvs/2012-05/msg00038.html aka the un-sign-extension of sizetype constants.
[Bug other/55312] libbacktrace doesn't honor --disable-werror
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55312 Markus Trippelsdorf markus at trippelsdorf dot de changed: What|Removed |Added CC||hjl.tools at gmail dot com, ||iant at google dot com, ||markus at trippelsdorf dot ||de --- Comment #1 from Markus Trippelsdorf markus at trippelsdorf dot de 2012-11-13 18:24:50 UTC --- See also: http://gcc.gnu.org/ml/gcc-regression/2012-11/msg00279.html
[Bug rtl-optimization/19398] secondary reloads don't consider m alternatives
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=19398 Uros Bizjak ubizjak at gmail dot com changed: What|Removed |Added CC||vmakarov at gcc dot gnu.org --- Comment #13 from Uros Bizjak ubizjak at gmail dot com 2012-11-13 18:33:55 UTC --- CC LRA masters.
[Bug middle-end/55142] [4.8 Regression] internal compiler error: in plus_constant, at explow.c:88
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55142 --- Comment #36 from hjl at gcc dot gnu.org hjl at gcc dot gnu.org 2012-11-13 18:35:42 UTC --- Author: hjl Date: Tue Nov 13 18:35:32 2012 New Revision: 193483 URL: http://gcc.gnu.org/viewcvs?root=gccview=revrev=193483 Log: Workaround PR middle-end/55142 gcc/ 2012-11-13 Eric Botcazou ebotca...@adacore.com H.J. Lu hongjiu...@intel.com PR middle-end/55142 * config/i386/i386.c (legitimize_pic_address): Properly handle REG + CONST. (ix86_print_operand_address): Set code to 'k' when forcing addr32 prefix. For x32, zero-extend negative displacement if it -16*1024*1024. gcc/testsuite/ 2012-11-13 H.J. Lu hongjiu...@intel.com PR middle-end/55142 * gcc.target/i386/pr55142-1.c: New file. * gcc.target/i386/pr55142-2.c: Likewise. Added: trunk/gcc/testsuite/gcc.target/i386/pr55142-1.c trunk/gcc/testsuite/gcc.target/i386/pr55142-2.c Modified: trunk/gcc/ChangeLog trunk/gcc/config/i386/i386.c trunk/gcc/testsuite/ChangeLog
[Bug tree-optimization/54717] [4.8 Regression] Runtime regression: polyhedron test rnflow degraded
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54717 --- Comment #10 from Uros Bizjak ubizjak at gmail dot com 2012-11-13 18:39:28 UTC --- (In reply to comment #8) This shows that the file cptrf2_inl_1.f90 compiled with -ftree-loop-if-convert gives a slow executable without involving inlining or vectorization. Dup of PR53346 ?
[Bug middle-end/41115] Tree-vectorizer: VecCost tuning for X2: Without vectorization 30% faster
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=41115 Uros Bizjak ubizjak at gmail dot com changed: What|Removed |Added CC||venkataramanan.kumar at amd ||dot com --- Comment #2 from Uros Bizjak ubizjak at gmail dot com 2012-11-13 18:44:22 UTC --- Adding CC.
[Bug tree-optimization/53342] [4.8 Regression] rnflow.f90 is ~5% slower after revision 187340
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53342 --- Comment #3 from Uros Bizjak ubizjak at gmail dot com 2012-11-13 18:46:13 UTC --- (In reply to comment #2) Yeah. Is there any progress on this issue?
[Bug tree-optimization/54717] [4.8 Regression] Runtime regression: polyhedron test rnflow degraded
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54717 --- Comment #11 from Dominique d'Humieres dominiq at lps dot ens.fr 2012-11-13 18:54:40 UTC --- Dup of PR53346 ? May be! Both PRs seem also related to pr54073.
[Bug tree-optimization/55253] [4.8 Regression] Revision 193298 miscompiles sqlite with -Os
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55253 --- Comment #6 from Martin Jambor jamborm at gcc dot gnu.org 2012-11-13 18:56:27 UTC --- Author: jamborm Date: Tue Nov 13 18:56:24 2012 New Revision: 193484 URL: http://gcc.gnu.org/viewcvs?root=gccview=revrev=193484 Log: 2012-11-13 Martin Jambor mjam...@suse.cz PR tree-optimization/55253 * ipa-cp.c (merge_aggregate_lattices): Propagate aggs_contain_variable flag. * testsuite/gcc.dg/torture/pr55253.c: New test. * testsuite/gcc.dg/torture/pr55305.c: Likewise. Added: trunk/gcc/testsuite/gcc.dg/torture/pr55253.c trunk/gcc/testsuite/gcc.dg/torture/pr55305.c Modified: trunk/gcc/ChangeLog trunk/gcc/ipa-cp.c trunk/gcc/testsuite/ChangeLog
[Bug middle-end/55142] [4.8 Regression] internal compiler error: in plus_constant, at explow.c:88
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55142 Eric Botcazou ebotcazou at gcc dot gnu.org changed: What|Removed |Added Status|NEW |RESOLVED Resolution||FIXED --- Comment #37 from Eric Botcazou ebotcazou at gcc dot gnu.org 2012-11-13 19:36:47 UTC --- Hopefully.
[Bug bootstrap/55289] darwin bootstrap fails due to missing libsanitizer/interception/mach_override directory and files
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55289 --- Comment #9 from Jack Howarth howarth at nitro dot med.uc.edu 2012-11-13 19:50:20 UTC --- Created attachment 28676 -- http://gcc.gnu.org/bugzilla/attachment.cgi?id=28676 hack to build asan support
[Bug bootstrap/55289] darwin bootstrap fails due to missing libsanitizer/interception/mach_override directory and files
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55289 --- Comment #10 from Jack Howarth howarth at nitro dot med.uc.edu 2012-11-13 19:52:35 UTC --- The attached patch (with configure and Makefile.in regenerated) allows the asan support to build on x86_64-apple-darwin12. It still isn't functional yet as test cases compiled with... g++-fsf-4.8 -faddress-sanitizer -framework CoreFoundation hello.cc -lasan produce... # ./a.out mach_override: some instructions unknown! Need to update mach_override.c err = f801 ../../../../gcc-4.8-20121113/libsanitizer/interception/mach_override/mach_override.c:308 err = f801 ../../../../gcc-4.8-20121113/libsanitizer/interception/mach_override/mach_override.c:321 err = f801 ../../../../gcc-4.8-20121113/libsanitizer/interception/mach_override/mach_override.c:327 err = f801 ../../../../gcc-4.8-20121113/libsanitizer/interception/mach_override/mach_override.c:340 err = f801 ../../../../gcc-4.8-20121113/libsanitizer/interception/mach_override/mach_override.c:345 Hello, world.
[Bug bootstrap/55289] darwin bootstrap fails due to missing libsanitizer/interception/mach_override directory and files
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55289
--- Comment #11 from Jack Howarth howarth at nitro dot med.uc.edu 2012-11-13
20:13:18 UTC ---
For the simple test case...
int main()
{
int i;
i=5;
}
compiled with 'g++-fsf-4.8 -faddress-sanitizer -O0 -framework CoreFoundation
test.cc -lasan'
using a mach_override.c with...
#define DEBUG_DISASM 1
// #undef DEBUG_DISASM
the errors appear late in the debug output at...
Replacing function at 0x11183d630
First 16 bytes of the function: 48 8d 5 11 4f b 0 53 48 8d 5f e0 48 89 77 90
To disassemble, save the following function as disas.c and run:
gcc -c disas.c gobjdump -d disas.o
The first 16 bytes of the original function will start after four nop
instructions.
void foo() {
asm volatile(nop;nop;nop;nop;);
asm volatile(.byte 0x48, 0x8d, 0x5, 0x11, 0x4f, 0xb, 0x0, 0x53;);
asm volatile(.byte 0x48, 0x8d, 0x5f, 0xe0, 0x48, 0x89, 0x77, 0x90;);
}
Matching: 48 FAIL
Matching: 48 FAIL
Matching: 48 FAIL
Matching: 48 FAIL
Matching: 48 8d FAIL
Matching: 48 8d FAIL
Matching: 48 8d FAIL
Matching: 48 8d FAIL
Matching: 48 FAIL
Matching: 48 FAIL
Matching: 48 FAIL
Matching: 48 FAIL
Matching: 48 FAIL
Matching: 48 FAIL
Matching: 48 FAIL
Matching: 48 FAIL
Matching: 48 FAIL
Matching: 48 FAIL
Matching: 48 FAIL
Matching: 48 8d FAIL
Matching: 48 8d FAIL
Matching: 48 FAIL
Matching: 48 8d FAIL
Matching: 48 FAIL
Matching: 48 FAIL
Matching: 48 FAIL
Matching: 48 FAIL
Matching: 48 FAIL
Matching: 48 FAIL
Matching: 48 FAIL
Matching: 48 FAIL
Matching: 48 FAIL
Matching: 48 8d FAIL
mach_override: some instructions unknown! Need to update mach_override.c
overridePossible = false @299
err = f801
../../../../gcc-4.8-20121113/libsanitizer/interception/mach_override/mach_override.c:308
err = f801
../../../../gcc-4.8-20121113/libsanitizer/interception/mach_override/mach_override.c:321
err = f801
../../../../gcc-4.8-20121113/libsanitizer/interception/mach_override/mach_override.c:327
err = f801
../../../../gcc-4.8-20121113/libsanitizer/interception/mach_override/mach_override.c:340
err = f801
../../../../gcc-4.8-20121113/libsanitizer/interception/mach_override/mach_override.c:345
First 16 bytes of the function after slicing: 48 8d 5 11 4f b 0 53 48 8d 5f e0
48 89 77 90
Replacing function at 0x7fff94c23364
[Bug bootstrap/55289] darwin bootstrap fails due to missing libsanitizer/interception/mach_override directory and files
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55289 --- Comment #12 from Jack Howarth howarth at nitro dot med.uc.edu 2012-11-13 20:21:35 UTC --- The disasembled testcase that is choking on shows... test.o: file format mach-o-x86-64 Disassembly of section .text: _main: 0:55 push %rbp 1:48 89 e5 mov%rsp,%rbp 4:c7 45 fc 05 00 00 00 movl $0x5,-0x4(%rbp) b:b8 00 00 00 00 mov$0x0,%eax 10:5d pop%rbp 11:c3 retq 0012 __GLOBAL__sub_I_00099_0_test.cc: 12:55 push %rbp 13:48 89 e5 mov%rsp,%rbp 16:e8 00 00 00 00 callq 1b __GLOBAL__sub_I_00099_0_test.cc+0x9 1b:5d pop%rbp 1c:c3 retq Disassembly of section __DATA.__mod_init_func: 0020 __DATA.__mod_init_func: ...
[Bug bootstrap/55289] darwin bootstrap fails due to missing libsanitizer/interception/mach_override directory and files
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55289 --- Comment #13 from Jack Howarth howarth at nitro dot med.uc.edu 2012-11-13 20:25:45 UTC --- Also note the comment in mach_override.c... #elif defined(__x86_64__) // TODO(glider): disassembling the 0x48, 0x89 sequences is trickier than it's done below. // If it stops working, refer to http://ref.x86asm.net/geek.html#modrm_byte_32_64 to do it // more accurately. // Note: 0x48 is in fact the REX.W prefix, but it might be wrong to treat it as a separate // instruction. looks like we are bumping into this bug.
[Bug c/55299] missed optimization: ASR idiom
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55299 --- Comment #2 from olly at survex dot com 2012-11-13 20:40:06 UTC --- Interestingly clang (at least 3.0-6 from Debian testing) fails to optimise the same testcase but shifting by a constant. For that variant case clang generates essentially the same code as GCC currently does.
[Bug bootstrap/55289] darwin bootstrap fails due to missing libsanitizer/interception/mach_override directory and files
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55289
--- Comment #14 from Jack Howarth howarth at nitro dot med.uc.edu 2012-11-13
20:50:37 UTC ---
Actually, this appears to be just noise on the output from a functional
libasan. If I use the testcase from
http://code.google.com/p/address-sanitizer/wiki/AddressSanitizer of...
% cat tests/use-after-free.c
#include stdlib.h
int main() {
char *x = (char*)malloc(10 * sizeof(char*));
free(x);
return x[5];
}
I get...
howarth% gcc-fsf-4.8 -faddress-sanitizer -framework CoreFoundation -O1
-fno-omit-frame-pointer -g use-after-free.c -lasan
howarth% ./a.out
mach_override: some instructions unknown! Need to update mach_override.c
err = f801
../../../../gcc-4.8-20121113/libsanitizer/interception/mach_override/mach_override.c:308
err = f801
../../../../gcc-4.8-20121113/libsanitizer/interception/mach_override/mach_override.c:321
err = f801
../../../../gcc-4.8-20121113/libsanitizer/interception/mach_override/mach_override.c:327
err = f801
../../../../gcc-4.8-20121113/libsanitizer/interception/mach_override/mach_override.c:340
err = f801
../../../../gcc-4.8-20121113/libsanitizer/interception/mach_override/mach_override.c:345
=
==88551== ERROR: AddressSanitizer heap-use-after-free on address 0x000105cbaf45
at pc 0x103001f12 bp 0x7fff5cbfe8f0 sp 0x7fff5cbfe8e8
READ of size 1 at 0x000105cbaf45 thread T0
#0 0x103001f11 (/Users/howarth/./a.out+0x10f11)
#1 0x7fff8bd827e0 (/usr/lib/system/libdyld.dylib+0x27e0)
#2 0x0
0x000105cbaf45 is located 5 bytes inside of 80-byte region
[0x000105cbaf40,0x000105cbaf90)
freed by thread T0 here:
#0 0x1030147a4 (/sw/lib/gcc4.8/lib/libasan.0.dylib+0xb7a4)
#1 0x10301492a (/sw/lib/gcc4.8/lib/libasan.0.dylib+0xb92a)
#2 0x103001ee5 (/Users/howarth/./a.out+0x10ee5)
#3 0x7fff8bd827e0 (/usr/lib/system/libdyld.dylib+0x27e0)
#4 0x0
previously allocated by thread T0 here:
#0 0x103014255 (/sw/lib/gcc4.8/lib/libasan.0.dylib+0xb255)
#1 0x7fff94c3b152 (/usr/lib/system/libsystem_c.dylib+0x2d152)
#2 0x7fff94c3bba6 (/usr/lib/system/libsystem_c.dylib+0x2dba6)
#3 0x103001eda (/Users/howarth/./a.out+0x10eda)
#4 0x7fff8bd827e0 (/usr/lib/system/libdyld.dylib+0x27e0)
Shadow byte and word:
0x100020b975e8: fd
0x100020b975e8: fd fd fd fd fd fd fd fd
More shadow bytes:
0x100020b975c8: fa fa fa fa fa fa fa fa
0x100020b975d0: fa fa fa fa fa fa fa fa
0x100020b975d8: fa fa fa fa fa fa fa fa
0x100020b975e0: fa fa fa fa fa fa fa fa
=0x100020b975e8: fd fd fd fd fd fd fd fd
0x100020b975f0: fd fd fd fd fd fd fd fd
0x100020b975f8: fa fa fa fa fa fa fa fa
0x100020b97600: fa fa fa fa fa fa fa fa
0x100020b97608: fa fa fa fa fa fa fa fa
Stats: 0M malloced (0M for red zones) by 1 calls
Stats: 0M realloced by 0 calls
Stats: 0M freed by 1 calls
Stats: 0M really freed by 0 calls
Stats: 0M (128 full pages) mmaped in 1 calls
mmaps by size class: 8:2047;
mallocs by size class: 8:1;
frees by size class: 8:1;
rfrees by size class:
Stats: malloc large: 0 small slow: 1
==88551== ABORTING
compared to...
howarth% /sw/opt/llvm-3.2/bin/clang -fsanitize=address -O1
-fno-omit-frame-pointer -g use-after-free.c
howarth% ./a.out
=
==88537== ERROR: AddressSanitizer: heap-use-after-free on address
0x00010a0a2f45 at pc 0x107dcae54 bp 0x7fff57e358f0 sp 0x7fff57e358e8
READ of size 1 at 0x00010a0a2f45 thread T0
#0 0x107dcae53 (/Users/howarth/./a.out+0x10e53)
#1 0x7fff8bd827e0 (/usr/lib/system/libdyld.dylib+0x27e0)
#2 0x0
0x00010a0a2f45 is located 5 bytes inside of 80-byte region
[0x00010a0a2f40,0x00010a0a2f90)
freed by thread T0 here:
#0 0x107dd3878 (/Users/howarth/./a.out+0x19878)
#1 0x107dd2ef2 (/Users/howarth/./a.out+0x18ef2)
#2 0x107dcae1a (/Users/howarth/./a.out+0x10e1a)
#3 0x7fff8bd827e0 (/usr/lib/system/libdyld.dylib+0x27e0)
#4 0x0
previously allocated by thread T0 here:
#0 0x107dd3682 (/Users/howarth/./a.out+0x19682)
#1 0x7fff94c3b152 (/usr/lib/system/libsystem_c.dylib+0x2d152)
#2 0x7fff94c3bba6 (/usr/lib/system/libsystem_c.dylib+0x2dba6)
#3 0x107dcae0f (/Users/howarth/./a.out+0x10e0f)
#4 0x7fff8bd827e0 (/usr/lib/system/libdyld.dylib+0x27e0)
Shadow byte and word:
0x1000214145e8: fd
0x1000214145e8: fd fd fd fd fd fd fd fd
More shadow bytes:
0x1000214145c8: fa fa fa fa fa fa fa fa
0x1000214145d0: fa fa fa fa fa fa fa fa
0x1000214145d8: fa fa fa fa fa fa fa fa
0x1000214145e0: fa fa fa fa fa fa fa fa
=0x1000214145e8: fd fd fd fd fd fd fd fd
0x1000214145f0: fd fd fd fd fd fd fd fd
0x1000214145f8: fa fa fa fa fa fa fa fa
0x100021414600: fa fa fa fa fa fa fa fa
0x100021414608: fa fa fa fa fa fa fa fa
Stats: 0M malloced (0M for red zones) by 1
[Bug other/55309] gcc's address-sanitizer 66% slower than clang's
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55309 Konstantin Serebryany konstantin.s.serebryany at gmail dot com changed: What|Removed |Added CC||konstantin.s.serebryany at ||gmail dot com --- Comment #1 from Konstantin Serebryany konstantin.s.serebryany at gmail dot com 2012-11-13 21:10:23 UTC --- While this is an interesting comparison, I should note that the typical use of asan is with -O1 or -O2, so it might make more sense to compare the asan implementations at -O1/-O2
[Bug other/55312] libbacktrace doesn't honor --disable-werror
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55312 --- Comment #2 from ian at gcc dot gnu.org ian at gcc dot gnu.org 2012-11-13 21:25:45 UTC --- Author: ian Date: Tue Nov 13 21:25:39 2012 New Revision: 193485 URL: http://gcc.gnu.org/viewcvs?root=gccview=revrev=193485 Log: PR other/55312 * configure.ac: Only add -Werror if building a target library. Modified: trunk/libbacktrace/ChangeLog trunk/libbacktrace/configure trunk/libbacktrace/configure.ac
[Bug bootstrap/55289] darwin bootstrap fails due to missing libsanitizer/interception/mach_override directory and files
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55289 Konstantin Serebryany konstantin.s.serebryany at gmail dot com changed: What|Removed |Added CC||konstantin.s.serebryany at ||gmail dot com --- Comment #15 from Konstantin Serebryany konstantin.s.serebryany at gmail dot com 2012-11-13 21:27:08 UTC --- Please not that upstream asan is in the process of getting rid of mach_override in favor of Mac's function interposition.
[Bug other/55312] libbacktrace doesn't honor --disable-werror
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55312 Ian Lance Taylor ian at airs dot com changed: What|Removed |Added Status|UNCONFIRMED |RESOLVED CC||ian at airs dot com Resolution||FIXED --- Comment #3 from Ian Lance Taylor ian at airs dot com 2012-11-13 21:28:29 UTC --- Fixed.
[Bug other/55309] gcc's address-sanitizer 66% slower than clang's
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55309 --- Comment #2 from Markus Trippelsdorf markus at trippelsdorf dot de 2012-11-13 21:31:08 UTC --- gcc uses -O2 -g by default for --disable-bootstrap. Also ,to be fair, if one uses a profiledbootstrapped gcc configured with --enable-checking=release to build it only takes 12:58.77 on the same machine.
[Bug bootstrap/55289] darwin bootstrap fails due to missing libsanitizer/interception/mach_override directory and files
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55289 Jack Howarth howarth at nitro dot med.uc.edu changed: What|Removed |Added Attachment #28676|0 |1 is obsolete|| --- Comment #16 from Jack Howarth howarth at nitro dot med.uc.edu 2012-11-13 21:55:22 UTC --- Created attachment 28677 -- http://gcc.gnu.org/bugzilla/attachment.cgi?id=28677 prototype patch for adding darwin asan support
[Bug bootstrap/55289] darwin bootstrap fails due to missing libsanitizer/interception/mach_override directory and files
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55289 --- Comment #17 from Jack Howarth howarth at nitro dot med.uc.edu 2012-11-13 22:14:10 UTC --- (In reply to comment #16) Created attachment 28677 [details] prototype patch for adding darwin asan support Note that you need to run... autoconf -I. -I./config cd libsanitizer autoreconf -I. -I../config automake-1.11 after applying the prototype patch.
[Bug target/54429] [SH] SImode values get ferried through FPUL and FP regs for -O0
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54429
--- Comment #4 from Oleg Endo olegendo at gcc dot gnu.org 2012-11-13 22:25:30
UTC ---
(In reply to comment #3)
I've tested this:
Index: gcc/config/sh/sh.c
===
--- gcc/config/sh/sh.c(revision 193423)
+++ gcc/config/sh/sh.c(working copy)
@@ -12113,6 +12113,11 @@
if (FP_REGISTER_P (regno) mode == SFmode)
return true;
+ if (FP_REGISTER_P (regno)
+ !(GET_MODE_CLASS (mode) == MODE_FLOAT
+ || GET_MODE_CLASS (mode) == MODE_VECTOR_FLOAT))
+return false;
+
if (mode == V2SFmode)
{
if (((FP_REGISTER_P (regno) (regno - FIRST_FP_REG) % 2 == 0)
on rev 193423. There are a few failures on targets with HW FPU:
It seems these problems happen on big endian targets only.
FAIL: gcc.c-torture/execute/20080502-1.c compilation
Reload failure. Problematic insn:
(insn 12 44 13 2 (set (reg:SI 147 t)
(eq:SI (and:SI (reg:SI 1 r1 [166])
(subreg:SI (reg:DF 68 fr4 [ x ]) 0))
(const_int 0 [0]))) sh_tmp.cpp:110 1 {tstsi_t}
(expr_list:REG_DEAD (reg:SI 1 r1 [166])
(expr_list:REG_DEAD (reg:DF 68 fr4 [ x ])
(nil
FAIL: gcc.c-torture/execute/ieee/copysign1.c compilation
Reload failure. Problematic insn:
(insn 10 41 11 2 (set (reg:SI 147 t)
(eq:SI (and:SI (reg:SI 1 r1 [165])
(subreg:SI (reg:DF 70 fr6 [ y ]) 0))
(const_int 0 [0]))) sh_tmp.cpp:67 1 {tstsi_t}
(expr_list:REG_DEAD (reg:SI 1 r1 [165])
(expr_list:REG_DEAD (reg:DF 70 fr6 [ y ])
(nil
FAIL: gcc.dg/builtins-32.c (internal compiler error)
Reload failure. Problematic insn:
(insn 8 7 21 2 (set (reg:SI 0 r0 [164])
(and:SI (reg:SI 0 r0 [164])
(subreg:SI (reg:DF 68 fr4 [ x ]) 0))) sh_tmp.cpp:30 111
{*andsi_compact}
(expr_list:REG_DEAD (reg:DF 68 fr4 [ x ])
(nil)))
FAIL: gcc.dg/builtins-50.c (internal compiler error)
Reload failure. Problematic insn:
(insn 10 43 11 2 (set (reg:SI 147 t)
(eq:SI (and:SI (reg:SI 1 r1 [165])
(subreg:SI (reg:DF 70 fr6 [ y ]) 0))
(const_int 0 [0]))) sh_tmp.cpp:24 1 {tstsi_t}
(expr_list:REG_DEAD (reg:SI 1 r1 [165])
(expr_list:REG_DEAD (reg:DF 70 fr6 [ y ])
(nil
FAIL: gcc.dg/pr48335-7.c (internal compiler error)
Reload failure. Problematic insn:
(insn 9 3 10 2 (set (reg:SI 0 r0 [167])
(ashift:SI (subreg:SI (reg:DF 68 fr4 [ x ]) 0)
(const_int 8 [0x8]))) sh_tmp.cpp:28 149 {ashlsi3_k}
(expr_list:REG_DEAD (reg:DF 68 fr4 [ x ])
(nil)))
The problem is that 'arith_reg_operand' matches subregs of FP modes and so, for
example, combine folds insn sequences such as
(insn 8 7 9 2 (set (reg:SI 166)
(subreg:SI (reg:DI 165) 0)) sh_tmp.cpp:33 -1
(nil))
(insn 9 8 10 2 (set (reg:SI 167)
(ashift:SI (reg:SI 166)
(const_int 8 [0x8]))) sh_tmp.cpp:33 -1
(nil))
Adding this:
Index: gcc/config/sh/predicates.md
===
--- gcc/config/sh/predicates.md(revision 193423)
+++ gcc/config/sh/predicates.md(working copy)
@@ -156,7 +156,12 @@
if (REG_P (op))
regno = REGNO (op);
else if (GET_CODE (op) == SUBREG REG_P (SUBREG_REG (op)))
-regno = REGNO (SUBREG_REG (op));
+{
+ regno = REGNO (SUBREG_REG (op));
+ if (!(GET_MODE_CLASS (GET_MODE (SUBREG_REG (op))) == MODE_INT
+|| GET_MODE_CLASS (GET_MODE (SUBREG_REG (op))) ==
MODE_VECTOR_INT))
+return false;
+}
else
return 1;
makes the unwanted subreg propagation go away, but ends up in another reload
trouble:
sh_tmp.cpp:92:1: error: unable to find a register to spill in class
'TARGET_REGS'
}
^
sh_tmp.cpp:92:1: error: this is the insn:
(insn 7 4 8 2 (set (reg:SI 1 r1 [165])
(subreg:SI (reg:DF 70 fr6 [ y ]) 0)) sh_tmp.cpp:91 244 {movsi_ie}
(expr_list:REG_DEAD (reg:DF 70 fr6 [ y ])
(nil)))
On little endian this problem does not happen and the same insn right before
the reload pass looks like:
(insn 7 4 8 2 (set (reg:SI 165)
(subreg:SI (reg/v:DF 163 [ y ]) 4)) sh_tmp.cpp:91 244 {movsi_ie}
(expr_list:REG_DEAD (reg/v:DF 163 [ y ])
(nil)))
Notice that on big endian the insn contains hard regs.
I've tried tapping sh_secondary_reload and there are some weird things
happening such as:
in = 1 rlcass = 8 mode = SI x = (reg:DF 70 fr6 [ y ])
-- rclass = 5
This is caused by the way sh_cannot_change_mode_class handles stuff on big
endian. Adding this to 'sh_cannot_change_mode_class':
if (from == DFmode to == SImode)
return true;
fixes at least one of the test cases, but I'm totally unaware of the
[Bug fortran/55314] New: [4.6/4.7/4.8 Regression] Rejects some valid ALLOCATE statements
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55314 Bug #: 55314 Summary: [4.6/4.7/4.8 Regression] Rejects some valid ALLOCATE statements Classification: Unclassified Product: gcc Version: unknown Status: UNCONFIRMED Severity: normal Priority: P3 Component: fortran AssignedTo: unassig...@gcc.gnu.org ReportedBy: tkoe...@gcc.gnu.org Test case by Jacob Weisman Poulsen: jwp@wrapcrap:~$ cat test.f90 program main implicit none integer :: max_nb type comm_mask integer(4), pointer :: mask(:) end type comm_mask type (comm_mask), allocatable, save :: encode(:,:) max_nb=2 allocate( encode(1:1,1:max_nb)) allocate( encode(1,1)%mask(1),encode(1,2)%mask(1)) end program main jwp@wrapcrap:~$ gfortran test.f90 test.f90:10.12-32: allocate( encode(1,1)%mask(1),encode(1,2)%mask(1)) 1 2 Error: Allocate-object at (1) also appears at (2)
[Bug fortran/55314] [4.6/4.7/4.8 Regression] Rejects some valid ALLOCATE statements
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55314 Thomas Koenig tkoenig at gcc dot gnu.org changed: What|Removed |Added Status|UNCONFIRMED |ASSIGNED Last reconfirmed||2012-11-13 AssignedTo|unassigned at gcc dot |tkoenig at gcc dot gnu.org |gnu.org | Target Milestone|--- |4.6.4 Ever Confirmed|0 |1
[Bug rtl-optimization/55315] New: comparing address to constant is folded in cse
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55315
Bug #: 55315
Summary: comparing address to constant is folded in cse
Classification: Unclassified
Product: gcc
Version: 4.8.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: rtl-optimization
AssignedTo: unassig...@gcc.gnu.org
ReportedBy: vr...@gcc.gnu.org
Consider test.c:
...
int data[4096];
int
f (void)
{
return ((unsigned int) data[0]) == 0xdeadbea0U;
}
...
Although the address is not available at compile time, the compiler (mips
target) concludes it's not equal to the constant:
...
$ gcc test.c -O2 -o- -S
...
f:
j $31
move$2,$0
...
The comparison:
((unsigned int) data[0]) == 0xdeadbea0U
is transformed into this by expand:
((unsigned int) data[0]) + (~0xdeadbea0U + 1) == 0
Then cse uses this part of nonzero_address_p:
...
case PLUS:
if (CONST_INT_P (XEXP (x, 1)))
return nonzero_address_p (XEXP (x, 0));
...
to determine that ((unsigned int) data[0]) + (~0xdeadbea0U + 1) is non-null,
while there is no evidence that the PLUS is an address.
This is similar to PR29519, and the test-case of this PR is mentioned in
comment 5.
configure line:
...
Target: mipsisa32r2-sde-elf
Configured with: src/gcc-mainline/configure --build=i686-pc-linux-gnu
--host=i686-pc-linux-gnu --target=mipsisa32r2-sde-elf --enable-threads
--disable-libmudflap --disable-libssp --disable-libstdcxx-pch --with-gnu-as
--with-gnu-ld --enable-languages=c,c++ --disable-shared --enable-lto
--with-newlib --disable-nls --disable-shared --disable-threads --disable-libssp
--disable-libgomp --without-headers --with-newlib --disable-decimal-float
--disable-libffi --disable-libquadmath --disable-libitm --disable-libatomic
--enable-languages=c --with-build-sysroot=install/mipsisa32r2-sde-elf
--with-gmp=obj/pkg-mainline-0-mipsisa32r2-sde-elf/fsf-mainline-0-mipsisa32r2-sde-elf.extras/host-libs-i686-pc-linux-gnu/usr
--with-mpfr=obj/pkg-mainline-0-mipsisa32r2-sde-elf/fsf-mainline-0-mipsisa32r2-sde-elf.extras/host-libs-i686-pc-linux-gnu/usr
--with-mpc=obj/pkg-mainline-0-mipsisa32r2-sde-elf/fsf-mainline-0-mipsisa32r2-sde-elf.extras/host-libs-i686-pc-linux-gnu/usr
--with-host-libstdcxx='-static-libgcc -Wl,-Bstatic,-lstdc++,-Bdynamic -lm'
--with-isl=obj/pkg-mainline-0-mipsisa32r2-sde-elf/fsf-mainline-0-mipsisa32r2-sde-elf.extras/host-libs-i686-pc-linux-gnu/usr
--with-cloog=obj/pkg-mainline-0-mipsisa32r2-sde-elf/fsf-mainline-0-mipsisa32r2-sde-elf.extras/host-libs-i686-pc-linux-gnu/usr
--with-libelf=obj/pkg-mainline-0-mipsisa32r2-sde-elf/fsf-mainline-0-mipsisa32r2-sde-elf.extras/host-libs-i686-pc-linux-gnu/usr
--disable-libgomp --disable-libitm --enable-poison-system-directories
--with-build-time-tools=install/mipsisa32r2-sde-elf/bin
Thread model: single
gcc version 4.8.0 20121113 (experimental) (GCC)
...
[Bug fortran/55314] [4.6/4.7/4.8 Regression] Rejects some valid ALLOCATE statements
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55314
--- Comment #1 from Thomas Koenig tkoenig at gcc dot gnu.org 2012-11-13
22:59:22 UTC ---
Here's a tentative patch:
Index: resolve.c
===
--- resolve.c (Revision 192894)
+++ resolve.c (Arbeitskopie)
@@ -7618,12 +7618,18 @@ resolve_allocate_deallocate (gfc_code *code, const
if (pr-next qr-next)
{
+ int i;
gfc_array_ref *par = (pr-u.ar);
gfc_array_ref *qar = (qr-u.ar);
- if ((par-start[0] != NULL || qar-start[0] != NULL)
- gfc_dep_compare_expr (par-start[0],
- qar-start[0]) != 0)
- break;
+
+ for (i=0; ipar-dimen; i++)
+ {
+ if ((par-start[i] != NULL
+ || qar-start[i] != NULL)
+ gfc_dep_compare_expr (par-start[i],
+ qar-start[i]) != 0)
+ goto break_label;
+ }
}
}
else
@@ -7635,6 +7641,8 @@ resolve_allocate_deallocate (gfc_code *code, const
pr = pr-next;
qr = qr-next;
}
+ break_label:
+ ;
}
}
}
[Bug bootstrap/55289] darwin bootstrap fails due to missing libsanitizer/interception/mach_override directory and files
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55289 --- Comment #18 from Dominique d'Humieres dominiq at lps dot ens.fr 2012-11-13 23:21:35 UTC --- prototype patch for adding darwin asan support Already updated;-( - x86_64-*-linux-* | i?86-*-linux-*) + x86_64-*-linux-* | i?86-*-linux-* | *-*-darwin*) should now go to libsanitizer/configure.tgt and not to configure.ac.
[Bug middle-end/52285] [4.7/4.8 Regression] libgcrypt _gcry_burn_stack slowdown
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=52285 --- Comment #12 from Steven Bosscher steven at gcc dot gnu.org 2012-11-13 23:37:52 UTC --- Created attachment 28678 -- http://gcc.gnu.org/bugzilla/attachment.cgi?id=28678 Gross hack (In reply to comment #11) If loops are still around at LRA time, perhaps LRA should consider putting it before loop if register pressure is low, or LIM could just have extra code for this Unfortunately, loop are destroyed _just_ before LRA, at the end of IRA. IRA has its own loop tree but that is destroyed before LRA, too. I'm not saying it must be LIM, I'm just looking for suggestions where to perform this. LIM may be too early. I've experimented with the attached patch (based off some other patch for invariant addresses that was bit-rotting on a shelf) and I had to resort to some crude hacks to make loop-invariant even just consider moving the bare frame_pointer_rtx, like manually setting the cost to something high because set_src_cost(frame_pointer_rtx)==0. The result is this code: foo: leaq-72(%rsp), %rcx leaq-8(%rsp), %rdx // A Pyrrhic victory... .p2align 4,,10 .p2align 3 .L5: movq%rcx, %rax .p2align 4,,10 .p2align 3 .L3: movb$0, (%rax) addq$1, %rax cmpq%rdx, %rax jne .L3 subl$64, %edi testl %edi, %edi jg .L5 rep ret Need to think about this a bit more, perhaps postreload-gcse can be used for this instead of LIM...
[Bug middle-end/43631] var-tracking inserts notes with non-NULL BLOCK_FOR_INSN in between basic blocks
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=43631 --- Comment #6 from Steven Bosscher steven at gcc dot gnu.org 2012-11-13 23:38:55 UTC --- (In reply to comment #5) Created attachment 28673 [details] gcc48-pr43631.patch Is this what you meant? Yes, that's exactly what I meant, thanks!
[Bug target/55316] New: gcc/libsanitizer/asan/asan_linux.cc:70:3: error: #error Unsupported arch
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55316 Bug #: 55316 Summary: gcc/libsanitizer/asan/asan_linux.cc:70:3: error: #error Unsupported arch Classification: Unclassified Product: gcc Version: 4.8.0 Status: UNCONFIRMED Severity: normal Priority: P3 Component: target AssignedTo: unassig...@gcc.gnu.org ReportedBy: dang...@gcc.gnu.org Host: hppa-unknown-linux-gnu Target: hppa-unknown-linux-gnu Build: hppa-unknown-linux-gnu libtool: compile: /home/dave/gnu/gcc/objdir/./gcc/g++ - B/home/dave/gnu/gcc/objdir/./gcc/ -nostdinc++ -nostdinc++ -I/home/dave/gnu/gcc/o bjdir/hppa-linux-gnu/libstdc++-v3/include/hppa-linux-gnu -I/home/dave/gnu/gcc/ob jdir/hppa-linux-gnu/libstdc++-v3/include -I/home/dave/gnu/gcc/gcc/libstdc++-v3/l ibsupc++ -I/home/dave/gnu/gcc/gcc/libstdc++-v3/include/backward -I/home/dave/gnu /gcc/gcc/libstdc++-v3/testsuite/util -L/home/dave/gnu/gcc/objdir/hppa-linux-gnu/ libstdc++-v3/src -L/home/dave/gnu/gcc/objdir/hppa-linux-gnu/libstdc++-v3/src/.li bs -B/home/dave/opt/gnu/gcc/gcc-4.8.0/hppa-linux-gnu/bin/ -B/home/dave/opt/gnu/g cc/gcc-4.8.0/hppa-linux-gnu/lib/ -isystem /home/dave/opt/gnu/gcc/gcc-4.8.0/hppa- linux-gnu/include -isystem /home/dave/opt/gnu/gcc/gcc-4.8.0/hppa-linux-gnu/sys-i nclude -D_GNU_SOURCE -D_DEBUG -D__STDC_CONSTANT_MACROS -D__STDC_FORMAT_MACROS -D __STDC_LIMIT_MACROS -DASAN_HAS_EXCEPTIONS=1 -DASAN_FLEXIBLE_MAPPING_AND_OFFSET=0 -DASAN_NEEDS_SEGV=1 -I. -I../../../../gcc/libsanitizer/asan -I ../../../../gcc/ libsanitizer/include -I ../../../../gcc/libsanitizer -Wall -W -Wno-unused-parame ter -Wwrite-strings -pedantic -Wno-long-long -fPIC -fno-builtin -fno-exceptions -fomit-frame-pointer -funwind-tables -fvisibility=hidden -Wno-variadic-macros -W no-c99-extensions -g -O2 -D_GNU_SOURCE -MT asan_linux.lo -MD -MP -MF .deps/asan_ linux.Tpo -c ../../../../gcc/libsanitizer/asan/asan_linux.cc -fPIC -DPIC -o .li bs/asan_linux.o ../../../../gcc/libsanitizer/asan/asan_linux.cc:70:3: error: #error Unsupported arch # error Unsupported arch ^ cc1plus: warning: unrecognized command line option -Wno-c99-extensions [enabled by default] make[3]: *** [asan_linux.lo] Error 1
[Bug ada/55243] STAMP variable is not defined in t-avr
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55243 Georg-Johann Lay gjl at gcc dot gnu.org changed: What|Removed |Added Component|target |ada --- Comment #4 from Georg-Johann Lay gjl at gcc dot gnu.org 2012-11-14 00:00:24 UTC --- t-avr is the wrong place to set STAMP, it should be set in some Makefile(.in), presumable in the ada part, somewhere around ./gcc/ada/gcc-interface/Makefile.in You see STAMP being mentioned in repsective config.log?
[Bug other/55304] libsanitizer can't be used with GCC autoconf
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55304 --- Comment #5 from hjl at gcc dot gnu.org hjl at gcc dot gnu.org 2012-11-14 00:02:16 UTC --- Author: hjl Date: Wed Nov 14 00:02:12 2012 New Revision: 193491 URL: http://gcc.gnu.org/viewcvs?root=gccview=revrev=193491 Log: Update configure.ac for GCC tree and remove unused files PR other/55304 * acinclude.m4: New file. * Makefile.am (ACLOCAL_AMFLAGS): New. * configure.ac (AC_PREREQ): Set to 2.64. (AC_CONFIG_AUX_DIR): Set to ... * Makefile.in: Regenerated. * aclocal.m4: Likewise. * configure: Likewise. * asan/Makefile.in: Likewise. * interception/Makefile.in: Likewise. * sanitizer_common/Makefile.in: Likewise. * config.guess: Removed. * config.sub: Likewise. * depcomp: Likewise. * install-sh: Likewise. * ltmain.sh: Likewise. * missing: Likewise. Added: trunk/libsanitizer/acinclude.m4 Removed: trunk/libsanitizer/config.guess trunk/libsanitizer/config.sub trunk/libsanitizer/depcomp trunk/libsanitizer/install-sh trunk/libsanitizer/ltmain.sh trunk/libsanitizer/missing Modified: trunk/libsanitizer/ChangeLog.asan trunk/libsanitizer/Makefile.am trunk/libsanitizer/Makefile.in trunk/libsanitizer/aclocal.m4 trunk/libsanitizer/asan/Makefile.in trunk/libsanitizer/configure trunk/libsanitizer/configure.ac trunk/libsanitizer/interception/Makefile.in trunk/libsanitizer/sanitizer_common/Makefile.in
[Bug other/55304] libsanitizer can't be used with GCC autoconf
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55304 H.J. Lu hjl.tools at gmail dot com changed: What|Removed |Added Status|NEW |RESOLVED Resolution||FIXED --- Comment #6 from H.J. Lu hjl.tools at gmail dot com 2012-11-14 00:02:55 UTC --- Fixed.
[Bug target/55317] New: [i386-regression] just don't strip stdcall suffix in gcc
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55317 Bug #: 55317 Summary: [i386-regression] just don't strip stdcall suffix in gcc Classification: Unclassified Product: gcc Version: 4.8.0 Status: UNCONFIRMED Severity: blocker Priority: P3 Component: target AssignedTo: unassig...@gcc.gnu.org ReportedBy: jojel...@gmail.com Created attachment 28679 -- http://gcc.gnu.org/bugzilla/attachment.cgi?id=28679 testcase It resulted in link error while building libgcc. $ /tmp/gcc/host-i686-pc-cygwin/gcc/xgcc -B/tmp/gcc/host-i686-pc-cygwin/gcc/ -B/usr/i686-pc-cygwin/bin/ -B/usr/i686-pc-cygwin/lib/ -isystem /usr/i686-pc-cygwin/include -isystem /usr/i686-pc-cygwin/sys-include -v Reading specs from /tmp/gcc/host-i686-pc-cygwin/gcc/specs COLLECT_GCC=/tmp/gcc/host-i686-pc-cygwin/gcc/xgcc COLLECT_LTO_WRAPPER=/tmp/gcc/host-i686-pc-cygwin/gcc/lto-wrapper.exe Target: i686-pc-cygwin Configured with: ./configure --config-cache --enable-plugin --prefix=/usr --disable-win32-registry --enable-threads=win32 --enable-languages=c,c++,lto,fortran --with-win32-nlsapi=unicode --enable-tls --disable-bootstrap --enable-shared --disable-sjlj-exceptions --enable-gomp --enable-cloog-backend=isl LTLDFLAGS=-no-undefined lt_cv_deplibs_check_method=pass_all : (reconfigured) ./configure --config-cache --enable-plugin --prefix=/usr --disable-win32-registry --enable-threads=win32 --enable-languages=c,c++,lto,fortran --with-win32-nlsapi=unicode --enable-tls --disable-bootstrap --enable-shared --disable-sjlj-exceptions --enable-gomp --enable-cloog-backend=isl LTLDFLAGS=-no-undefined lt_cv_deplibs_check_method=pass_all : (reconfigured) ./configure --config-cache --prefix=/usr --disable-win32-registry --enable-threads=win32 --enable-languages=c,c++,lto,fortran --with-win32-nlsapi=unicode --enable-tls --disable-bootstrap --enable-shared --disable-sjlj-exceptions --enable-gomp --enable-cloog-backend=isl LTLDFLAGS=-no-undefined lt_cv_deplibs_check_method=pass_all Thread model: win32 gcc version 4.8.0 20121113 (experimental) (GCC) Use --enable-stdcall-fixup to disable these warnings Use --disable-stdcall-fixup to disable these fixups /tmp/gcc/host-i686-pc-cygwin/gcc/crtbegin.o:cygming-crtbegin.c:(.text+0x2f): undefined reference to `__imp__GetProcAddress' /tmp/gcc/host-i686-pc-cygwin/gcc/crtbegin.o:cygming-crtbegin.c:(.text+0x78): undefined reference to `__imp__GetProcAddress' /tmp/gcc/host-i686-pc-cygwin/gcc/crtbegin.o:cygming-crtbegin.c:(.text+0xcc): undefined reference to `__imp__GetProcAddress' /usr/i686-pc-cygwin/bin/ld: /tmp/gcc/host-i686-pc-cygwin/gcc/crtbegin.o: bad reloc address 0x20 in section `.eh_frame' collect2: error: ld returned 1 exit status Makefile:921: recipe for target `libgcc_s.dll' failed And there is no such __imp__GetProcAddress symbol defined in libkernel32.a $ nm -sn /lib/w32api/libkernel32.a |grep GetProcAddress _GetProcAddress@8 in degqcs00553.o __imp__GetProcAddress@8 in degqcs00553.o I __imp__GetProcAddress@8 T _GetProcAddress@8 i confirmed that 4.8.0 20121002 has no problem like this $ gcc -v test.c Using built-in specs. COLLECT_GCC=gcc COLLECT_LTO_WRAPPER=/usr/libexec/gcc/i686-pc-cygwin/4.8.0/lto-wrapper.exe Target: i686-pc-cygwin Configured with: ./configure --config-cache --prefix=/usr --disable-win32-registry --enable-threads=win32 --enable-languages=c,c++,lto,fortran --with-win32-nlsapi=unicode --enable-tls --disable-bootstrap --enable-shared --disable-sjlj-exceptions --enable-gomp --enable-cloog-backend=isl LTLDFLAGS=-no-undefined lt_cv_deplibs_check_method=pass_all Thread model: win32 gcc version 4.8.0 20121002 (experimental) (GCC) COLLECT_GCC_OPTIONS='-v' '-mtune=generic' '-march=pentiumpro' /usr/libexec/gcc/i686-pc-cygwin/4.8.0/cc1.exe -quiet -v -D__CYGWIN32__ -D__CYGWIN__ -Dunix -D__unix__ -D__unix -idirafter /usr/lib/gcc/i686-pc-cygwin/4.8.0/../../../../i686-pc-cygwin/lib/../include/w32api -idirafter /usr/lib/gcc/i686-pc-cygwin/4.8.0/../../../../i686-pc-cygwin/lib/../../include/w32api test.c -quiet -dumpbase test.c -mtune=generic -march=pentiumpro -auxbase test -version -o /tmp/ccI4wcdv.s GNU C (GCC) version 4.8.0 20121002 (experimental) (i686-pc-cygwin) compiled by GNU C version 4.8.0 20120821 (experimental), GMP version 5.0.2, MPFR version 3.2.0-dev, MPC version 0.9 GGC heuristics: --param ggc-min-expand=30 --param ggc-min-heapsize=4096 ignoring duplicate directory /usr/include ignoring duplicate directory /usr/lib/gcc/i686-pc-cygwin/4.8.0/../../../../i686-pc-cygwin/lib/../../include/w32api #include ... search starts here: #include ... search starts here: /usr/lib/gcc/i686-pc-cygwin/4.8.0/include /usr/local/include /usr/lib/gcc/i686-pc-cygwin/4.8.0/include-fixed /usr/lib/gcc/i686-pc-cygwin/4.8.0/../../../../i686-pc-cygwin/include /usr/lib/gcc
[Bug bootstrap/55289] darwin bootstrap fails due to missing libsanitizer/interception/mach_override directory and files
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55289 Jack Howarth howarth at nitro dot med.uc.edu changed: What|Removed |Added Attachment #28677|0 |1 is obsolete|| --- Comment #19 from Jack Howarth howarth at nitro dot med.uc.edu 2012-11-14 01:28:44 UTC --- Created attachment 28680 -- http://gcc.gnu.org/bugzilla/attachment.cgi?id=28680 revised prototype patch for adding darwin asan support
[Bug bootstrap/55289] darwin bootstrap fails due to missing libsanitizer/interception/mach_override directory and files
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55289 --- Comment #20 from Jack Howarth howarth at nitro dot med.uc.edu 2012-11-14 01:30:13 UTC --- Revised patch builds at r193494 after... cd libsanitizer autoconf -I. -I../config automake-1.11
[Bug c++/55318] New: Missing uninitialized warning
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55318
Bug #: 55318
Summary: Missing uninitialized warning
Classification: Unclassified
Product: gcc
Version: 4.7.2
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
AssignedTo: unassig...@gcc.gnu.org
ReportedBy: brunonery+bugzi...@brunonery.com
The following piece of code:
=== snip ===
#include iostream
struct warnme
{
bool member_;
warnme(bool member) : member_(member_) {}
};
int main()
{
warnme wm(true);
std::cout wm.member_ std::endl;
return 0;
}
=== end snip ===
when compiled with g++ 4.7, gives me no warnings - even with
-Wuninitialized (clang++ 3.1 works fine).
[Bug c++/55319] New: Using -fwhole-program inhibits optimization
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55319 Bug #: 55319 Summary: Using -fwhole-program inhibits optimization Classification: Unclassified Product: gcc Version: 4.7.2 Status: UNCONFIRMED Severity: normal Priority: P3 Component: c++ AssignedTo: unassig...@gcc.gnu.org ReportedBy: m1010...@gmail.com Created attachment 28681 -- http://gcc.gnu.org/bugzilla/attachment.cgi?id=28681 The preprocessed source The attached code is a template-based brainfuck interpreter, and the brainfuck code in it prints Hello world!. When the attached code is compiled with g++ -std=c++11 -O2 bf.ii, it produces a series of calls to _IO_putc which directly print Hello World!. However, when compiled with g++ -std=c++11 -O2 -fwhole-program bf.ii, it produces a more direct and less optimized interpretation of the associated brainfuck. $ gcc -v Using built-in specs. COLLECT_GCC=gcc COLLECT_LTO_WRAPPER=/usr/lib/gcc/x86_64-unknown-linux-gnu/4.7.2/lto-wrapper Target: x86_64-unknown-linux-gnu Configured with: /build/src/gcc-4.7.2/configure --prefix=/usr --libdir=/usr/lib --libexecdir=/usr/lib --mandir=/usr/share/man --infodir=/usr/share/info --with-bugurl=https://bugs.archlinux.org/ --enable-languages=c,c++,ada,fortran,go,lto,objc,obj-c++ --enable-shared --enable-threads=posix --with-system-zlib --enable-__cxa_atexit --disable-libunwind-exceptions --enable-clocale=gnu --disable-libstdcxx-pch --enable-libstdcxx-time --enable-gnu-unique-object --enable-linker-build-id --with-ppl --enable-cloog-backend=isl --disable-ppl-version-check --disable-cloog-version-check --enable-lto --enable-gold --enable-ld=default --enable-plugin --with-plugin-ld=ld.gold --with-linker-hash-style=gnu --enable-multilib --disable-libssp --disable-build-with-cxx --disable-build-poststage1-with-cxx --enable-checking=release Thread model: posix gcc version 4.7.2 (GCC)
