[Bug bootstrap/55915] fails to build lto-compress.c, zlib.h not found
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55915 --- Comment #6 from Yves Caniou yves.can...@ens-lyon.fr --- (In reply to Yves Caniou from comment #5) Le mardi 19 novembre 2013 02:36:30 pinskia at gcc dot gnu.org a écrit : http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55915 Andrew Pinski pinskia at gcc dot gnu.org changed: What|Removed |Added Status|UNCONFIRMED |WAITING Last reconfirmed||2013-11-19 Ever confirmed|0 |1 --- Comment #4 from Andrew Pinski pinskia at gcc dot gnu.org --- (In reply to Yves Caniou from comment #3) I have the same problem when compiling gcc-4.8.2 with gcc version 4.6.3 (Ubuntu/Linaro 4.6.3-1ubuntu5) on Xeon(R) CPU W3670 @ 3.20GHz Note that with the exact same process, I have been able to compile gcc-4.8.2 with gcc 4.7.2 (debian). Do you have a zlib.h installed? For the original issue here, I think you need to use BOOT_CFLAGS and maybe BOOT_CXXFLAGS. Indeed: /usr/include/zlib.h And as I said, I could compile gcc-4.8.2 from 4.7.2 without any problem in the first place. Problems only appear when compiling gcc-4.8.2 with the new installation and all environment variables configured (at least as I thought: why would I use BOOT_FLAGS and how?) .Y Ok. Wrong machine, I apologize. I have a /usr/lib/syslinux/com32/include/zlib.h from syslinux-common package, not /usr/include/zlib.h from zlib1g-dev. Installing zlib1g-dev does the trick..
[Bug libfortran/49024] REAL*16 ERFC_SCALED inaccuracy
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49024 Bug 49024 depends on bug 59227, which changed state. Bug 59227 Summary: [4.9 regression] FAIL: gfortran.dg/erf_3.F90 -O0 execution test http://gcc.gnu.org/bugzilla/show_bug.cgi?id=59227 What|Removed |Added Status|REOPENED|RESOLVED Resolution|--- |FIXED
[Bug libfortran/59227] [4.9 regression] FAIL: gfortran.dg/erf_3.F90 -O0 execution test
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=59227 Francois-Xavier Coudert fxcoudert at gcc dot gnu.org changed: What|Removed |Added Status|REOPENED|RESOLVED Resolution|--- |FIXED --- Comment #23 from Francois-Xavier Coudert fxcoudert at gcc dot gnu.org --- I saw in your daily tests that the XFAIL indeed silences the failure. Closing as fixed, will un-XFAIL when PR59230 is fixed.
[Bug bootstrap/59235] [4.9 regression] SEGV in sparc_output_scratch_registers
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=59235 --- Comment #4 from ro at CeBiTec dot Uni-Bielefeld.DE ro at CeBiTec dot Uni-Bielefeld.DE --- --- Comment #2 from Jeffrey A. Law law at redhat dot com --- Ranier, The only sparc box in the farm is the painfully slow gcc54 which someone else is hammering so bad there's no way I can reasonably test if the fix for 59221 also fixes this bug. Can you update your local tree and rebuild and let me know if this problem is resolved or not. It'd be greatly appreciated. Done. The two bootstraps (one at r205213 with your patch reverted, the other at r205233) completed successfully, and with the exception of one failure that turned out to be spurious and several go failures that I don't trust to be real at the moment, testsuite results were identical. Thanks. Rainer
[Bug target/58314] SH4 error: 'asm' operand requires impossible reload
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=58314 --- Comment #10 from Oleg Endo olegendo at gcc dot gnu.org --- (In reply to Oleg Endo from comment #9) I'm testing the above patch now. And there are failures. Here is one (I think I remember it when working on the QI/HImode displacement addressing stuff): FAIL: gcc.dg/torture/vshuf-v16hi.c -O2 (test for excess errors) Excess errors: /usr/local/sh-elf/bin/ld: internal error: merge of architecture 'sh3e' with architecture 'sh2a-nofpu' produced unknown architecture /usr/local/sh-elf/bin/ld: /tmp/ccRPtSqs.o: uses instructions which are incompatible with instructions used in previous modules /usr/local/sh-elf/bin/ld: failed to merge target specific data of file /tmp/ccRPtSqs.o This usually happens because SH2A insns are output -- 32 bit displacement addressing insns which are more flexible -- even though the target is non-SH2A. This is what the comment above the reg_reg pattern is talking about. (There is no compiler error because the target type is not passed down to the assembler by the compiler).
[Bug c/59219] ____builtin___memcpy_chk and -fno-builtin-memcpy
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=59219 --- Comment #3 from Richard Biener rguenth at gcc dot gnu.org --- But if you are using __builtin__xxx_chk you are using a builtin and thus are required to follow the builtins semantic. You can use __memcpy_chk instead (but you won't get the optimization to memcpy for unknown object sizes then).
[Bug c++/59248] [4.8 regression] pointless -Wconversion warning with sizeof, take 2
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=59248 Richard Biener rguenth at gcc dot gnu.org changed: What|Removed |Added Target Milestone|--- |4.8.3
[Bug c++/59248] [4.8 regression] pointless -Wconversion warning with sizeof, take 2
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=59248 Richard Biener rguenth at gcc dot gnu.org changed: What|Removed |Added Status|UNCONFIRMED |WAITING Last reconfirmed||2013-11-22 Ever confirmed|0 |1 --- Comment #1 from Richard Biener rguenth at gcc dot gnu.org --- Which slightly more involved testcase?
[Bug tree-optimization/59245] [4.9 Regression] ICE on valid code at -O3 on x86_64-linux-gnu in set_value_range, at tree-vrp.c:443
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=59245 Richard Biener rguenth at gcc dot gnu.org changed: What|Removed |Added Priority|P3 |P1 Status|UNCONFIRMED |NEW Last reconfirmed||2013-11-22 Known to work||4.8.2 Target Milestone|--- |4.9.0 Summary|ICE on valid code at -O3 on |[4.9 Regression] ICE on |x86_64-linux-gnu in |valid code at -O3 on |set_value_range, at |x86_64-linux-gnu in |tree-vrp.c:443 |set_value_range, at ||tree-vrp.c:443 Ever confirmed|0 |1 --- Comment #1 from Richard Biener rguenth at gcc dot gnu.org --- Confirmed.
[Bug c++/59240] ICE in varpool_get_node
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=59240 Richard Biener rguenth at gcc dot gnu.org changed: What|Removed |Added Keywords||ice-on-invalid-code Status|UNCONFIRMED |WAITING Last reconfirmed||2013-11-22 Ever confirmed|0 |1 --- Comment #1 from Richard Biener rguenth at gcc dot gnu.org --- Confirmed. The testcase is now invalid though (errors appear before the ICE). Can you attach unreduced preproecessed source? (Or re-delta with additional checking that the testcase compiles, for example with an older GCC version?)
[Bug c++/51219] [4.7/4.8/4.9 regression] ICE with empty bit-fields
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=51219 Richard Biener rguenth at gcc dot gnu.org changed: What|Removed |Added Keywords||ice-checking Priority|P3 |P2
[Bug rtl-optimization/52714] [4.7/4.8/4.9 regression] ICE in fixup_reorder_chain, at cfglayout.c:880
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=52714 Richard Biener rguenth at gcc dot gnu.org changed: What|Removed |Added Target||m68k-linux-gnu Priority|P3 |P4
[Bug lto/56706] [4.8/4.9 Regression] failure building CP2K at -flto -O2
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=56706 Richard Biener rguenth at gcc dot gnu.org changed: What|Removed |Added Status|NEW |WAITING --- Comment #8 from Richard Biener rguenth at gcc dot gnu.org --- Waiting for analysis.
[Bug rtl-optimization/56738] [4.9 Regression] ICE in c-c++-common/torture/vshuf-v4di.c
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=56738 Richard Biener rguenth at gcc dot gnu.org changed: What|Removed |Added Status|WAITING |RESOLVED Resolution|--- |FIXED --- Comment #7 from Richard Biener rguenth at gcc dot gnu.org --- Fixed.
[Bug lto/56706] [4.8/4.9 Regression] failure building CP2K at -flto -O2
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=56706 --- Comment #9 from Joost VandeVondele Joost.VandeVondele at mat dot ethz.ch --- (In reply to Richard Biener from comment #8) Waiting for analysis. Analysis by whom, and if me, what can I do ?
[Bug bootstrap/56750] [4.8/4.9 Regression] static -lstdc++ logic bleeds into all subdirs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=56750 Richard Biener rguenth at gcc dot gnu.org changed: What|Removed |Added Priority|P3 |P2 Version|unknown |4.8.0 Target Milestone|4.9.0 |4.8.3
[Bug other/56811] [4.8/4.9 Regression] libbacktrace causes undefined symbol _Unwind_GetIPInfo on ia64-hpux
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=56811 Richard Biener rguenth at gcc dot gnu.org changed: What|Removed |Added Priority|P3 |P4
[Bug middle-end/56791] [4.8/4.9 Regression] Segmentation fault in stage2 gengenrtl -- Incorrect instruction sequence generated by reload
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=56791 Richard Biener rguenth at gcc dot gnu.org changed: What|Removed |Added Priority|P3 |P2
[Bug c/56824] [4.8/4.9 regression] pragma GCC diagnostic push/pop fail with GCC diagnostic ignored -Waggregate-return
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=56824 Richard Biener rguenth at gcc dot gnu.org changed: What|Removed |Added Priority|P3 |P2
[Bug rtl-optimization/56912] [4.8/4.9 Regression] scheduler change breaks linux kernel LTO build with 4.8
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=56912 Richard Biener rguenth at gcc dot gnu.org changed: What|Removed |Added Status|WAITING |RESOLVED Resolution|--- |FIXED --- Comment #7 from Richard Biener rguenth at gcc dot gnu.org --- Fixed.
[Bug middle-end/56077] [4.7 Regression] volatile ignored when function inlined
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=56077 Bug 56077 depends on bug 56912, which changed state. Bug 56912 Summary: [4.8/4.9 Regression] scheduler change breaks linux kernel LTO build with 4.8 http://gcc.gnu.org/bugzilla/show_bug.cgi?id=56912 What|Removed |Added Status|WAITING |RESOLVED Resolution|--- |FIXED
[Bug rtl-optimization/57032] [4.9 Regression]: internal compiler error: Max. number of generated reload insns per insn is achieved (90)
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=57032 Richard Biener rguenth at gcc dot gnu.org changed: What|Removed |Added Priority|P3 |P4
[Bug bootstrap/57059] [4.8/4.9 Regression] Host configuration of loose_warn breaks for build components for Canadian crosses
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=57059 Richard Biener rguenth at gcc dot gnu.org changed: What|Removed |Added Priority|P3 |P2
[Bug sanitizer/57316] [4.8/4.9 regression] build failure in libsanitizer
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=57316 Richard Biener rguenth at gcc dot gnu.org changed: What|Removed |Added Priority|P3 |P2 Status|WAITING |NEW
[Bug middle-end/57461] [4.9 Regression] ICE (segfault) for pass_final's ggc_collect: in lookup_page_table_entry, depending on details like (length of?) identifier names, file name of source file
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=57461 Richard Biener rguenth at gcc dot gnu.org changed: What|Removed |Added Status|WAITING |RESOLVED Resolution|--- |FIXED --- Comment #8 from Richard Biener rguenth at gcc dot gnu.org --- Fixed.
[Bug debug/57664] [4.8/4.9 Regression] ICE: in should_move_die_to_comdat, at dwarf2out.c:6750 with -fdebug-types-section and lambda
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=57664 Richard Biener rguenth at gcc dot gnu.org changed: What|Removed |Added Priority|P3 |P2
[Bug middle-end/57503] [4.7/4.8/4.9 Regression] Expand uses wrong multiply routine
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=57503 Richard Biener rguenth at gcc dot gnu.org changed: What|Removed |Added Priority|P3 |P4
[Bug web/56063] [bugzilla] last reconfirmed : now
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=56063 --- Comment #10 from Joost VandeVondele Joost.VandeVondele at mat dot ethz.ch --- Frederic, are you still looking into this one ? I still believe this would be progress.
[Bug tree-optimization/57732] [4.8/4.9 Regression] ICE (segfault in libisl) building drizzle on 32bit targets (at least arm-linux and i586-linux)
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=57732 Richard Biener rguenth at gcc dot gnu.org changed: What|Removed |Added Status|UNCONFIRMED |WAITING Last reconfirmed||2013-11-22 Depends on||59121 Ever confirmed|0 |1 --- Comment #2 from Richard Biener rguenth at gcc dot gnu.org --- Cannot reproduce this one, but it looks like a dup of or related to PR59121. As the crash is in ISL please report the ISL and cloog versions you use.
[Bug middle-end/58125] [4.9 Regression] ICE: in operator[], at vec.h:827 with -fno-inline-small-functions
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=58125 Richard Biener rguenth at gcc dot gnu.org changed: What|Removed |Added Priority|P3 |P1
[Bug debug/58315] [4.8/4.9 Regression] Excessive memory use with -g
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=58315 Richard Biener rguenth at gcc dot gnu.org changed: What|Removed |Added Priority|P3 |P2 Status|UNCONFIRMED |NEW Last reconfirmed||2013-11-22 Ever confirmed|0 |1
[Bug rtl-optimization/57915] [4.8/4.9 Regression] ICE in set_address_disp, at rtlanal.c:5537
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=57915 Richard Biener rguenth at gcc dot gnu.org changed: What|Removed |Added Priority|P3 |P2 --- Comment #5 from Richard Biener rguenth at gcc dot gnu.org --- Still happens.
[Bug sanitizer/59063] [4.9 Regression] ASAN: segfault in __interceptor_clock_gettime
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=59063 --- Comment #20 from Kostya Serebryany kcc at gcc dot gnu.org --- This is fixed in llvm trunk, right? I am planing another merge to gcc in ~1 week.
[Bug lto/58733] [4.9 Regression] ICE in operator[], at vec.h:827
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=58733 Richard Biener rguenth at gcc dot gnu.org changed: What|Removed |Added Keywords||lto Priority|P3 |P1 CC||hjl.tools at gmail dot com --- Comment #4 from Richard Biener rguenth at gcc dot gnu.org --- Seems like -fuse-ld=gold doesn't work with -flto, so not yet confirmed. ./xgcc -B. t.c t2.c -flto -fuse-ld=gold /usr/lib64/gcc/x86_64-suse-linux/4.6/../../../../x86_64-suse-linux/bin/ld: -f may not be used without -shared collect2: error: ld returned 1 exit status it invokes collect.ld for me when doing make check-g++ RUNTESTFLAGS=--target_board=unix/-fuse-ld=gold lto.exp=20090302_0.C with an installed compiler -fuse-ld=gold works. It would be nice if running the testsuite with an alternate linker would work - HJ, can you try investigating this?
[Bug lto/56706] [4.8/4.9 Regression] failure building CP2K at -flto -O2
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=56706 --- Comment #10 from Joost VandeVondele Joost.VandeVondele at mat dot ethz.ch --- So, after the change from fat to slim lto, I've added the CP2K SVN repo to use gcc-ar (so that the instructions in comment #1 should still work). Now, the issue discussed here fails to reproduce because during the lto phase we run into: /data/vjoost/clean/cp2k/cp2k/makefiles/../src/thermostat_methods.F:102:0: internal compiler error: tree check: expected ssa_name, have integer_cst in simplify_conversion_from_bitmask, at tree-ssa-forwprop.c:1189 SUBROUTINE create_thermostats(thermostats, md_section, force_env, simpar, ^ 0xb15de4 tree_check_failed(tree_node const*, char const*, int, char const*, ...) ../../gcc/gcc/tree.c:9189 0x9e52c0 tree_check ../../gcc/gcc/tree.h:2710 0x9e52c0 simplify_conversion_from_bitmask ../../gcc/gcc/tree-ssa-forwprop.c:1189 0x9ef3cd ssa_forward_propagate_and_combine ../../gcc/gcc/tree-ssa-forwprop.c:3552 0x9ef3cd execute ../../gcc/gcc/tree-ssa-forwprop.c:3661 Please submit a full bug report, with preprocessed source if appropriate. Please include the complete backtrace with any bug report. See http://gcc.gnu.org/bugs.html for instructions. make[2]: *** [/tmp/ccEVGVIu.ltrans20.ltrans.o] Error 1
[Bug sanitizer/59188] [4.9 Regression] lib64/libtsan.so: undefined reference to `sigsetjmp'
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=59188 Richard Biener rguenth at gcc dot gnu.org changed: What|Removed |Added Priority|P3 |P1 Status|REOPENED|NEW
[Bug tree-optimization/59139] [4.7/4.8/4.9 Regression] internal compiler error: in get_val_for, at tree-ssa-loop-niter.c:2267
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=59139 Richard Biener rguenth at gcc dot gnu.org changed: What|Removed |Added Priority|P3 |P2
[Bug lto/56706] [4.8/4.9 Regression] failure building CP2K at -flto -O2
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=56706 Joost VandeVondele Joost.VandeVondele at mat dot ethz.ch changed: What|Removed |Added Depends on||59154 --- Comment #11 from Joost VandeVondele Joost.VandeVondele at mat dot ethz.ch --- the ICE just mentioned is PR59154.
[Bug rtl-optimization/59138] [4.8/4.9 Regression] possible packed struct miscompile
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=59138
--- Comment #4 from Eric Botcazou ebotcazou at gcc dot gnu.org ---
Latent issue in the alias.c machinery: output_dependence returns 0 on
(insn 21 20 22 2 (set (mem/c:DI (const:DI (plus:DI (symbol_ref:DI (b) [flags
0x2] var_decl 0x76e4d2f8 b)
(const_int 8 [0x8]))) [0 +8 S8 A64])
(reg:DI 1 dx [99])) pr59138.c:20 85 {*movdi_internal}
(expr_list:REG_DEAD (reg:DI 1 dx [99])
(nil)))
(insn 22 21 23 2 (set (mem/c:HI (symbol_ref:DI (a) [flags 0x2] var_decl
0x76e4d260 a) [2 a+0 S2 A16])
(const_int 0 [0])) pr59138.c:21 87 {*movhi_internal}
(nil))
because base_alias_check returns 0 for different symbols...
[Bug sanitizer/59188] [4.9 Regression] lib64/libtsan.so: undefined reference to `sigsetjmp'
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=59188 --- Comment #11 from Kostya Serebryany kcc at gcc dot gnu.org --- planing next merge from llvm to gcc in ~1 week.
[Bug c++/59246] GCC should issue runtime error for calling pure virtual function with definition
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=59246
Jonathan Wakely redi at gcc dot gnu.org changed:
What|Removed |Added
Status|UNCONFIRMED |NEW
Last reconfirmed||2013-11-22
Ever confirmed|0 |1
--- Comment #2 from Jonathan Wakely redi at gcc dot gnu.org ---
(In reply to Ryou Ezoe from comment #0)
// call by unqualified name is virtual function call.
// virtual function call during destruction is undefined.
N.B. it's only undefined if the function is a pure virtual, not in general, and
you do get a warning:
pv.cc: In destructor ‘virtual Base::~Base()’:
pv.cc:14:7: warning: pure virtual ‘virtual void Base::f()’ called from
destructor [enabled by default]
f() ;
^
Here's a complete testcase (you can't get a runtime error if your program can't
be run!)
struct Base
{
virtual void f() = 0 ;
virtual ~Base() ;
} ;
// pure virtual function with definition
void Base::f() { }
Base::~Base()
{
// call by unqualified name is virtual function call.
// virtual function call during destruction is undefined.
f() ;
}
struct Derived : Base
{
void f() { }
};
int main()
{
Derived d;
}
[Bug middle-end/57748] [4.7/4.8/4.9 Regression] ICE when expanding assignment to unaligned zero-sized array
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=57748 --- Comment #48 from Paulo J. Matos pa...@matos-sorge.com --- (In reply to Paulo J. Matos from comment #47) Would like to add that I backported the patch locally and all the testsuite is passing until now. The ICE I initially got is not gone as well. So I can confirm that as far as I know, the patch is indeed fine in 4.8. s/not/now/. Obviously I meant that the patch applies cleanly and works for me in 4.8.
[Bug lto/58733] [4.9 Regression] ICE in operator[], at vec.h:827
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=58733 --- Comment #5 from Markus Trippelsdorf octoploid at yandex dot com --- FYI I'm running the latest binutils trunk: GNU gold (GNU Binutils 2.24.51.20131121) 1.11 (I don't use -fuse-ld=gold normally, because one can easily switch linkers globally, e.g.: ln -f /usr/x86_64-pc-linux-gnu/binutils-bin/git/ld.gold /usr/x86_64-pc-linux-gnu/binutils-bin/git/ld)
[Bug middle-end/57748] [4.7/4.8/4.9 Regression] ICE when expanding assignment to unaligned zero-sized array
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=57748 --- Comment #49 from Paulo J. Matos pa...@matos-sorge.com --- I noticed that enabling misaligned moves have created a few test failures on my port. Namely: execute.exp=20051113-1.c. It was generating one too many moves to deference the structure in function Sum. Applying patch posted by Bernd: http://gcc.gnu.org/ml/gcc-patches/2013-11/msg02291.html fixes the problems I was seeing. The patch does not apply cleanly to 4.8 (3 out of 14 hunks fail) but they are easily fixable. Again, a request for this to be approved in master and later in 4.8 (since it lead to wrong code generation).
[Bug libstdc++/59247] [4.9 Regression] Bootstrap fails due to errors in libstdc++ sources with `--enable-symvers=gnu-versioned-namespace'
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=59247 Jonathan Wakely redi at gcc dot gnu.org changed: What|Removed |Added Status|UNCONFIRMED |NEW Last reconfirmed||2013-11-22 Summary|Bootstrap fails due to |[4.9 Regression] Bootstrap |errors in libstdc++ sources |fails due to errors in |with|libstdc++ sources with |`--enable-symvers=gnu-versi |`--enable-symvers=gnu-versi |oned-namespace' |oned-namespace' Ever confirmed|0 |1 --- Comment #1 from Jonathan Wakely redi at gcc dot gnu.org --- Confirmed In file included from /home/jwakely/buildv7/x86_64-unknown-linux-gnu/libstdc++-v3/include/regex:63:0, from /home/jwakely/src/gcc/libstdc++-v3/include/precompiled/stdc++.h:108: /home/jwakely/buildv7/x86_64-unknown-linux-gnu/libstdc++-v3/include/bits/regex.h:735:31: error: ‘_NFA’ is not a member of ‘std::__7::__detail’ typedef std::shared_ptr__detail::_NFA_Rx_traits _AutomatonPtr; ^ /home/jwakely/buildv7/x86_64-unknown-linux-gnu/libstdc++-v3/include/bits/regex.h:735:31: note: suggested alternatives: In file included from /home/jwakely/buildv7/x86_64-unknown-linux-gnu/libstdc++-v3/include/regex:60:0, from /home/jwakely/src/gcc/libstdc++-v3/include/precompiled/stdc++.h:108: /home/jwakely/buildv7/x86_64-unknown-linux-gnu/libstdc++-v3/include/bits/regex_automaton.h:159:12: note: ‘std::__detail::__7::_NFA’ struct _NFA ^
[Bug tree-optimization/59249] New: Jump threading makes if-conversion and following vectorization impossible.
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=59249
Bug ID: 59249
Summary: Jump threading makes if-conversion and following
vectorization impossible.
Product: gcc
Version: 4.8.2
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: tree-optimization
Assignee: unassigned at gcc dot gnu.org
Reporter: bmei at broadcom dot com
I am doing some investigation on loops can be vectorized by LLVM, but not GCC.
One example is loop that contains more than one if-else constructs.
typedef signed char int8;
#define FFT 128
typedef struct {
int8 exp[FFT];
} feq_t;
void test(feq_t *feq)
{
int k;
int feqMinimum = 15;
int8 *exp = feq-exp;
for (k=0;kFFT;k++) {
exp[k] -= feqMinimum;
if(exp[k]-15) exp[k] = -15;
if(exp[k]15) exp[k] = 15;
}
}
Compile it with 4.8.2 on x86_64
~/install-4.8/bin/gcc ghs-algorithms_380.c -O2 -fdump-tree-ifcvt-details
-ftree-vectorize -save-temps
It is not vectorized because if-else constructs inside the loop cannot be
if-converted. Looking into .ifcvt file, this is due to bad if-else structure
(ifcvt pass complains only critical predecessors). One branch jumps directly
into another branch. Digging a bit deeper, I found such structure is generated
by dom1 pass doing jump threading optimization.
So recompile with
~/install-4.8/bin/gcc ghs-algorithms_380.c -O2 -fdump-tree-ifcvt-details
-ftree-vectorize -save-temps -fno-tree-dominator-opts
It is magically if-converted and vectorized! Same on our target, performance is
improved greatly in this example.
It seems to me that doing jump threading for architectures support
if-conversion is not a good idea. Original if-else structures are damaged so
that if-conversion cannot proceed, so are vectorization and maybe other
optimizations. Should we try to identify those bad jump threading and skip
them for such architectures?
Andrew Pinski slightly modified the code and -fno-tree-dominator-opts trick
won't work any more.
#define FFT 128
typedef struct {
signed char exp[FFT];
} feq_t;
void test(feq_t *feq)
{
int k;
int feqMinimum = 15;
signed char *exp = feq-exp;
for (k=0;kFFT;k++) {
signed char temp = exp[k] - feqMinimum;
if(temp-15) temp = -15;
if(temp15) temp = 15;
exp[k] = temp;
}
}
But this time is due to jump threading in VRP pass that causes the trouble.
With -fno-tree-vrp, the code can be if-converted and vectorized again.
[Bug c++/59240] ICE in varpool_get_node
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=59240 --- Comment #2 from Adam Borowski kilobyte at angband dot pl --- Created attachment 31271 -- http://gcc.gnu.org/bugzilla/attachment.cgi?id=31271action=edit smaller test case that compiles with 4.8 A funny thing: this ICE does not show in the original file, it just happened that an additional unrelated ICE popped up while deltaing a test case for another. It turns out that it's enough to just declare something as __weakref__, reducing the reproducer to a single line that compiles with g++-4.8.
[Bug libstdc++/59215] tsan: warning in shared_ptr_base.h
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=59215 --- Comment #19 from Jonathan Wakely redi at gcc dot gnu.org --- Oleg, I can't reproduce this tsan warning with the cases Iv'e tried, what is the stack trace you see?
[Bug sanitizer/59148] FAIL: c-c++-common/asan/strncpy-overflow-1.c -O0 execution test on darwin13
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=59148 --- Comment #4 from Jakub Jelinek jakub at gcc dot gnu.org --- Well, -D_FORTIFY_SOURCE=2 does things that asan doesn't and can't do, so disabling fortification if you build with -fsanitize=address sounds like a very bad idea to me. IMHO libasan should intercept also the __*_chk calls, test + branch to __chk_fail if they should fail, otherwise fall through to the intercepted original function. For *printf* family __printf_chk etc. also fail on %n if it isn't in read-only string literal.
[Bug tree-optimization/59249] Jump threading makes if-conversion and following vectorization impossible.
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=59249 Richard Biener rguenth at gcc dot gnu.org changed: What|Removed |Added Status|UNCONFIRMED |NEW Last reconfirmed||2013-11-22 Ever confirmed|0 |1 --- Comment #1 from Richard Biener rguenth at gcc dot gnu.org --- Btw, the issue is that we only have critical predecessors for inserting code on. The fix is to re-organize if-conversion to either split a random edge when that happens or to re-organize it to compute edge predicates rather than basic-block predicates.
[Bug tree-optimization/59249] if-conversion doesn't handle basic-blocks with only critical predecessor edges
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=59249 --- Comment #2 from Richard Biener rguenth at gcc dot gnu.org --- Btw, see PR57521 for how the code is different from that on the 4.8 branch.
[Bug c/53001] -Wfloat-conversion should be available to warn about floating point errors
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53001
--- Comment #30 from Joshua Cogliati jjcogliati-r1 at yahoo dot com ---
Yes, it is fixed so far as I am concerned. I checked out gcc trunk 205109, and
bootstraped it and tried it out on:
int main(int argc, char ** argv) {
int i = 3.14;
return i;
}
int foo(double x)
{
return x;
}
float foo2(double x) {
return x;
}
and without the flag it didn't warn, but with the flag it did:
gcc -Wall -Wfloat-conversion -o float_test float_test.c
float_test.c: In function ‘main’:
float_test.c:2:3: warning: conversion to ‘int’ alters ‘double’ constant value
[-Wfloat-conversion]
int i = 3.14;
^
float_test.c: In function ‘foo’:
float_test.c:8:3: warning: conversion to ‘int’ from ‘double’ may alter its
value [-Wfloat-conversion]
return x;
^
float_test.c: In function ‘foo2’:
float_test.c:12:3: warning: conversion to ‘float’ from ‘double’ may alter its
value [-Wfloat-conversion]
return x;
^
I think there are two things remaining to be done.
1. http://gcc.gnu.org/gcc-4.9/changes.html does not yet list it as a change,
2. for gcc 4.10 (or what ever the next gcc version is) I think it might be
worth considering as a -Wextra or -Wall. That however would be a separate bug
number and would require something like the Patch to fixup gcc float
conversions in GCC and another patch to turn it on with the flag.
[Bug target/59243] [SH] Build fails during compiling libjava/interpret.cc with segfault
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=59243 --- Comment #1 from Oleg Endo olegendo at gcc dot gnu.org --- (In reply to Kazumoto Kojima from comment #0) Created attachment 31270 [details] A reduced test case Thanks. This is a very good test case. I'm looking into it.
[Bug target/59243] [SH] Build fails during compiling libjava/interpret.cc with segfault
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=59243 Oleg Endo olegendo at gcc dot gnu.org changed: What|Removed |Added Status|UNCONFIRMED |ASSIGNED Last reconfirmed||2013-11-22 Assignee|unassigned at gcc dot gnu.org |olegendo at gcc dot gnu.org Ever confirmed|0 |1
[Bug middle-end/59250] New: usan: ICE (segfault) with -fsanitize=undefined in ubsan_create_data
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=59250
Bug ID: 59250
Summary: usan: ICE (segfault) with -fsanitize=undefined in
ubsan_create_data
Product: gcc
Version: 4.9.0
Status: UNCONFIRMED
Keywords: ice-on-valid-code
Severity: normal
Priority: P3
Component: middle-end
Assignee: unassigned at gcc dot gnu.org
Reporter: burnus at gcc dot gnu.org
CC: mpolacek at gcc dot gnu.org
Created attachment 31272
-- http://gcc.gnu.org/bugzilla/attachment.cgi?id=31272action=edit
Test case: Run as g++ -fsanitize=undefined test29.ii
The followed code worked about week ago but fails now (r205246) with a segfault
on x86-64-gnu-linux.
$ g++ -fsanitize=undefined test29.ii
test29.ii: In constructor 'FileHandle::FileHandle(const char*)':
test29.ii:27:1: internal compiler error: Segmentation fault
FileHandle::FileHandle (const char* fname) : fname(fname) {
^
0xb9f85f crash_signal
../../gcc/toplev.c:336
0xbbab24 ubsan_source_location
../../gcc/ubsan.c:230
0xbbab24 ubsan_create_data(char const*, unsigned int, ubsan_mismatch_data
const*, ...)
../../gcc/ubsan.c:463
0xbbb179 ubsan_expand_null_ifn(gimple_stmt_iterator_d)
../../gcc/ubsan.c:565
[Bug c++/59238] Dynamic allocating a list-initialized object of a type with private destructor fails.
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=59238 Jonathan Wakely redi at gcc dot gnu.org changed: What|Removed |Added Status|UNCONFIRMED |NEW Last reconfirmed||2013-11-22 Ever confirmed|0 |1
[Bug middle-end/59250] usan: ICE (segfault) with -fsanitize=undefined in ubsan_create_data
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=59250
--- Comment #1 from Marek Polacek mpolacek at gcc dot gnu.org ---
Yeah, I bet this hunk
--- gcc/ubsan.c.jj2013-11-22 01:40:03.0 +0100
+++ gcc/ubsan.c2013-11-22 10:05:29.491725405 +0100
@@ -227,8 +227,8 @@ ubsan_source_location (location_t loc)
xloc = expand_location (loc);
/* Fill in the values from LOC. */
- size_t len = strlen (xloc.file);
- tree str = build_string (len + 1, xloc.file);
+ size_t len = xloc.file ? strlen (xloc.file) : 0;
+ tree str = build_string (len + 1, xloc.file ? xloc.file : );
TREE_TYPE (str) = build_array_type (char_type_node,
build_index_type (size_int (len)));
TREE_READONLY (str) = 1;
@@ -642,7 +642,7 @@ ubsan_pass (void)
{
struct walk_stmt_info wi;
gimple stmt = gsi_stmt (gsi);
- if (is_gimple_debug (stmt))
+ if (is_gimple_debug (stmt) || gimple_clobber_p (stmt))
{
gsi_next (gsi);
continue;
from Jakub's recent patch
(http://gcc.gnu.org/ml/gcc-patches/2013-11/msg02831.html) will fix it.
[Bug sanitizer/59250] ubsan: ICE (segfault) with -fsanitize=undefined in ubsan_create_data
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=59250 Marek Polacek mpolacek at gcc dot gnu.org changed: What|Removed |Added Status|UNCONFIRMED |NEW Last reconfirmed||2013-11-22 CC||dodji at gcc dot gnu.org, ||dvyukov at gcc dot gnu.org, ||jakub at gcc dot gnu.org, ||kcc at gcc dot gnu.org Component|middle-end |sanitizer Target Milestone|--- |4.9.0 Summary|usan: ICE (segfault) with |ubsan: ICE (segfault) with |-fsanitize=undefined in |-fsanitize=undefined in |ubsan_create_data |ubsan_create_data Ever confirmed|0 |1
[Bug lto/58733] [4.9 Regression] ICE in operator[], at vec.h:827
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=58733 --- Comment #6 from H.J. Lu hjl.tools at gmail dot com --- (In reply to Richard Biener from comment #4) Seems like -fuse-ld=gold doesn't work with -flto, so not yet confirmed. with an installed compiler -fuse-ld=gold works. It would be nice if running the testsuite with an alternate linker would work - HJ, can you try investigating this? A patch is posted at http://gcc.gnu.org/ml/gcc-patches/2013-11/msg02870.html
[Bug sanitizer/59148] FAIL: c-c++-common/asan/strncpy-overflow-1.c -O0 execution test on darwin13
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=59148 --- Comment #5 from Alexander Potapenko glider at google dot com --- I've opened https://code.google.com/p/address-sanitizer/issues/detail?id=247 to track this. But until that issue is fixed we'll have to disable source fortification in GCC if ASan is enabled.
[Bug fortran/59251] New: wrong code generation with allocatable dummy argument and INTENT(OUT)
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=59251 Bug ID: 59251 Summary: wrong code generation with allocatable dummy argument and INTENT(OUT) Product: gcc Version: 4.8.2 Status: UNCONFIRMED Severity: normal Priority: P3 Component: fortran Assignee: unassigned at gcc dot gnu.org Reporter: arnaud02 at users dot sourceforge.net Using the following program: module branch_plot_results_mod implicit none type, public :: system_variable_type sequence integer :: index = -1 end type system_variable_type type branch_plot_results_type sequence integer :: iu_appv = 0 type(system_variable_type), allocatable :: system_variables(:) end type branch_plot_results_type contains subroutine make1 ( res) type(branch_plot_results_type), allocatable, intent(out) :: res ! intent(out) causes wrong code generation end subroutine make1 end module branch_plot_results_mod program testy use branch_plot_results_mod type(branch_plot_results_type), allocatable :: res1 call make1(res1) end program testy gfortran 4.8.2 on Linux x86_64 produces an executable that crashes due to a memory corruption. valgrind reports: ==24704== Invalid free() / delete / delete[] / realloc() ==24704==at 0x4A071A4: free (vg_replace_malloc.c:468) ==24704==by 0x401B25: __branch_plot_results_mod_MOD_make1 (b1.f90:16) ==24704==by 0x401BA3: MAIN__ (b1.f90:24) ==24704==by 0x401C21: main (b1.f90:22) ==24704== Address 0xffefffaa0 is on thread 1's stack This is related to the use of the INTENT(OUT). This report is a possible duplicate of PR56218 although the program above does not use any OOP feature.
[Bug libstdc++/59247] [4.9 Regression] Bootstrap fails due to errors in libstdc++ sources with `--enable-symvers=gnu-versioned-namespace'
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=59247 Jonathan Wakely redi at gcc dot gnu.org changed: What|Removed |Added Status|NEW |ASSIGNED Assignee|unassigned at gcc dot gnu.org |redi at gcc dot gnu.org Target Milestone|--- |4.9.0
[Bug fortran/59252] New: wrong code generation for allocatable dummy arguments
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=59252 Bug ID: 59252 Summary: wrong code generation for allocatable dummy arguments Product: gcc Version: 4.8.2 Status: UNCONFIRMED Severity: normal Priority: P3 Component: fortran Assignee: unassigned at gcc dot gnu.org Reporter: arnaud02 at users dot sourceforge.net module branch_plot_results_mod implicit none type branch_plot_results_ppv_type sequence real(8) , allocatable :: v(:) integer :: handle = 0 character(256), allocatable :: label end type branch_plot_results_ppv_type type branch_plot_results_type sequence type(branch_plot_results_ppv_type), allocatable :: appv(:) integer :: end_appv = 0 end type branch_plot_results_type contains subroutine construct_branch_plot_results(res) type (branch_plot_results_type), allocatable, intent(inout) :: res if(.not.allocated(res)) allocate(res) end subroutine construct_branch_plot_results subroutine construct_branch_plot_results_appv(appv,asize) type(branch_plot_results_ppv_type), allocatable, intent(inout) :: appv(:) integer, intent(in ) :: asize if(allocated(appv)) then if(asize.ne.size(appv)) then deallocate(appv) endif endif if(.not.allocated(appv)) then allocate(appv(asize)) endif end subroutine construct_branch_plot_results_appv end module branch_plot_results_mod program testy use branch_plot_results_mod type(branch_plot_results_type), allocatable :: res call construct_branch_plot_results(res) call construct_branch_plot_results_appv(res%appv, 20) end program testy While compiling the program above, gfortran 4.8.2 on Linux x86_64 produces an executable that results in the run-time error below: Program received signal SIGSEGV: Segmentation fault - invalid memory reference. Valgrind points to the following error: ==24773== Use of uninitialised value of size 8 ==24773==at 0x401F37: __branch_plot_results_mod_MOD_construct_branch_plot_results_appv (b2.f90:33) ==24773==by 0x40: MAIN__ (b2.f90:44) ==24773==by 0x402393: main (b2.f90:39) ==24773== I suspect that gfortran does not support allocatable dummy arguments properly in this case.
[Bug fortran/59251] wrong code generation with allocatable dummy argument and INTENT(OUT)
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=59251 Dominique d'Humieres dominiq at lps dot ens.fr changed: What|Removed |Added Status|UNCONFIRMED |NEW Last reconfirmed||2013-11-22 Ever confirmed|0 |1 --- Comment #1 from Dominique d'Humieres dominiq at lps dot ens.fr --- Confirmed for gfortran 4.8.2. This has been fixed between revisions 199435 (2013-05-30) and 199960 (2013-06-11).
[Bug fortran/59252] wrong code generation for allocatable dummy arguments
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=59252 Dominique d'Humieres dominiq at lps dot ens.fr changed: What|Removed |Added Status|UNCONFIRMED |NEW Last reconfirmed||2013-11-22 Ever confirmed|0 |1 --- Comment #1 from Dominique d'Humieres dominiq at lps dot ens.fr --- Confirmed from 4.5.4 up to trunk (4.9).
[Bug libstdc++/59253] New: Python pretty printer should be improved for unique_ptr, shared_ptr and map
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=59253 Bug ID: 59253 Summary: Python pretty printer should be improved for unique_ptr, shared_ptr and map Product: gcc Version: unknown Status: UNCONFIRMED Severity: normal Priority: P3 Component: libstdc++ Assignee: unassigned at gcc dot gnu.org Reporter: leo.terziman at clarte dot asso.fr Created attachment 31273 -- http://gcc.gnu.org/bugzilla/attachment.cgi?id=31273action=edit Patch to improve pretty printing of map, shared_ptr and unique_ptr Some of the STL based containers have incomplete/incorrect pretty printing in libstdc++-v3/python. In particular, std::shared_ptr and std::unique_ptr should dereference their value to facilitate debugging with gdb. Moreover, in std::map, the keys and values are mixed together in the same list instead of producing a list of pairs with 'first' and 'second' attributes. I don't know if their is some technical justification for such behavior, but in case it is indeed an error, I attached a patch that solve those issues.
[Bug target/59091] __builtin_trap calls abort for arm-linux-gnueabi
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=59091 Ramana Radhakrishnan ramana at gcc dot gnu.org changed: What|Removed |Added Status|UNCONFIRMED |NEW Last reconfirmed||2013-11-22 CC||ramana at gcc dot gnu.org Target Milestone|--- |4.9.0 Ever confirmed|0 |1 --- Comment #3 from Ramana Radhakrishnan ramana at gcc dot gnu.org --- We'll look into fixing this for 4.9. The one thing appearing to be missing there is a blessing of a bit pattern and that's probably why it fell between the cracks.
[Bug c++/59254] New: confusing diagnostic for undefined template shadowed by declaration in inline namespace
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=59254
Bug ID: 59254
Summary: confusing diagnostic for undefined template shadowed
by declaration in inline namespace
Product: gcc
Version: 4.9.0
Status: UNCONFIRMED
Keywords: diagnostic
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: redi at gcc dot gnu.org
namespace outer {
inline namespace inner {
#ifndef OK
templatetypename T struct A;
#endif
}
templatetypename T struct A;
template class Aint;
}
This gives a confusing diagnostic:
$ g++ -std=gnu++11 n.cc -c
n.cc:10:18: error: ‘A’ is not a class template
template class Aint;
^
n.cc:10:18: error: template argument required for ‘class A’
That's particularly confusing because A is a class template, and so is inner::A
(although if it's just a class type the error is the same) and because a
template argument is given.
Without the previous definition in the inline namespace we get the expected
explanation:
$ g++ -std=gnu++11 n.cc -c -DOK
n.cc:10:18: error: explicit instantiation of ‘class outer::Aint’ before
definition of template
template class Aint;
^
[Bug target/59216] [4.9 Regression] ARM negdi*extendsidi regression
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=59216 Richard Earnshaw rearnsha at gcc dot gnu.org changed: What|Removed |Added Status|UNCONFIRMED |NEW Last reconfirmed||2013-11-22 Ever confirmed|0 |1 --- Comment #3 from Richard Earnshaw rearnsha at gcc dot gnu.org --- Confirmed, patch forthcoming.
[Bug target/59216] [4.9 Regression] ARM negdi*extendsidi regression
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=59216 --- Comment #4 from Richard Earnshaw rearnsha at gcc dot gnu.org --- Author: rearnsha Date: Fri Nov 22 15:43:11 2013 New Revision: 205271 URL: http://gcc.gnu.org/viewcvs?rev=205271root=gccview=rev Log: PR target/59216 gcc/ * arm.md (negdi_extendsidi): Fix invalid split. gcc/testsuite/ * gcc.target/arm/negdi-4.c: Delete invalid test. * gcc.dg/torture/pr59216.c: New test. Added: trunk/gcc/testsuite/gcc.dg/torture/pr59216.c Removed: trunk/gcc/testsuite/gcc.target/arm/negdi-4.c Modified: trunk/gcc/ChangeLog trunk/gcc/config/arm/arm.md trunk/gcc/testsuite/ChangeLog
[Bug target/59216] [4.9 Regression] ARM negdi*extendsidi regression
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=59216 Richard Earnshaw rearnsha at gcc dot gnu.org changed: What|Removed |Added Status|NEW |RESOLVED Resolution|--- |FIXED --- Comment #5 from Richard Earnshaw rearnsha at gcc dot gnu.org --- Fixed.
[Bug target/59243] [SH] Build fails during compiling libjava/interpret.cc with segfault
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=59243 --- Comment #2 from Oleg Endo olegendo at gcc dot gnu.org --- Created attachment 31274 -- http://gcc.gnu.org/bugzilla/attachment.cgi?id=31274action=edit Infinite recursion fix The attached patch should fix the infinite recursion problem. The test case compiles for me with -m4-single -O1 and -O2.
[Bug libstdc++/59215] tsan: warning in shared_ptr_base.h
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=59215 --- Comment #20 from Oleg Smolsky oleg at smolsky dot net --- Hey Jonathan, here is the output: Read of size 4 at 0x7d045008 by main thread (mutexes: write M2344, write M132): #0 _M_add_ref_lock /gcc48/include/c++/4.8.x-google/bits/shared_ptr_base.h:236 (exe+0x00d0ae09) #1 my code (a) Previous atomic write of size 4 at 0x7d045008 by thread T21 (mutexes: write M4016): #0 __tsan_atomic32_fetch_add ??:0 (libtsan.so.0+0xd3e5) #1 __exchange_and_add_dispatch /mnt/project/granite/toolchains/elixir/rvbd-gcc48/include/c++/4.8.x-google/ext/atomicity.h:49 (exe+0x003d7738) #2 handle_event() .../gcc48/include/c++/4.8.x-google/bits/shared_ptr_base.h:546 ( this is my code (b) (a) string x = config()-iscsi().dc_initiator().name(); this thing very quickly copies a shared_ptr instance, dereferences it, gets to a sub-object, gets a field and then destructs. (b) is a shared_ptr copy too, but it is obscured by heavy inlining
[Bug c++/59255] New: Segmentation fault with std::function and -fprofile-use
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=59255
Bug ID: 59255
Summary: Segmentation fault with std::function and
-fprofile-use
Product: gcc
Version: 4.8.2
Status: UNCONFIRMED
Severity: critical
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: stepik-777 at mail dot ru
Consider the following simple program:
#include functional
int main(int argc, char *argv[])
{
std::functionint () f = []{ return 0; };
return 0;
}
I'm compiling it with these commands:
g++ -std=c++11 -fprofile-generate -c test.cpp -o test.o
g++ -std=c++11 -fprofile-generate -o test test.o
./test # execute to generate profiling data
g++ -std=c++11 -fprofile-use -c test.cpp -o test.o
#g++ -std=c++11 -fprofile-use -o test test.o
This causes segfault when compiling with -fprofile-use:
test.cpp: In destructor 'std::_Function_base::~_Function_base()':
test.cpp:7:1: internal compiler error: Segmentation fault
}
^
Tested with these two gcc versions:
g++ (Ubuntu/Linaro 4.8.1-10ubuntu8) 4.8.1
g++.exe (rev0, Built by MinGW-W64 project) 4.8.2
[Bug c++/59256] New: qualified name in friend function declaration doesn't match previous declaration in inline namespace
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=59256
Bug ID: 59256
Summary: qualified name in friend function declaration doesn't
match previous declaration in inline namespace
Product: gcc
Version: 4.9.0
Status: UNCONFIRMED
Keywords: rejects-valid
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: redi at gcc dot gnu.org
I *think* this is valid, and clang accepts it, but G++ doesn't:
namespace detail {
inline namespace v7 {
void f();
}
}
inline namespace v7 {
templatetypename T class A {
private:
A() { }
friend void detail::f();
};
}
namespace detail {
inline namespace v7 {
void f() { Aint a; }
}
}
int main()
{
detail::f();
}
$ g++ -std=gnu++11 n.cc
n.cc: In function ‘void detail::v7::f()’:
n.cc:10:5: error: ‘v7::AT::A() [with T = int]’ is private
A() { }
^
n.cc:18:23: error: within this context
void f() { Aint a; }
^
I think the qualified name detail::f should find ::detail::v7::f
[Bug middle-end/59257] New: usan/*san: Dpcumentation oddness of -fsanitize= / -fsanitize=shift
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=59257
Bug ID: 59257
Summary: usan/*san: Dpcumentation oddness of -fsanitize= /
-fsanitize=shift
Product: gcc
Version: 4.9.0
Status: UNCONFIRMED
Keywords: documentation
Severity: normal
Priority: P3
Component: middle-end
Assignee: unassigned at gcc dot gnu.org
Reporter: burnus at gcc dot gnu.org
CC: jakub at gcc dot gnu.org, mpolacek at gcc dot gnu.org
Regarding -fsanitize=*
That option does not appear in
http://gcc.gnu.org/onlinedocs/gcc/Option-Index.html but I think it should.
Actually, I think several other options miss a @opindex entry, too.
Additionally, in the man page, I get:
-fsanitize=undefined
Enable UndefinedBehaviorSanitizer, a fast undefined
behavior detector. Various computations will be
instrumented to detect undefined behavior at runtime.
Current suboptions are:
*-fsanitize=shift
This option enables checking that the result of a
The look odd.
In invoke.texi, one has:
@item -fsanitize=undefined
...
@item @option{-fsanitize=shift}
Maybe there shouldn't be an @option{}?
It does look okay at http://gcc.gnu.org/onlinedocs/gcc/Debugging-Options.html
[Bug libstdc++/59247] [4.9 Regression] Bootstrap fails due to errors in libstdc++ sources with `--enable-symvers=gnu-versioned-namespace'
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=59247 --- Comment #2 from Jonathan Wakely redi at gcc dot gnu.org --- Author: redi Date: Fri Nov 22 16:59:25 2013 New Revision: 205277 URL: http://gcc.gnu.org/viewcvs?rev=205277root=gccview=rev Log: PR libstdc++/59247 * include/bits/c++config (_GLIBCXX_INLINE_VERSION): Declare namespace std::experimental::__7 as inline. * include/bits/regex.h (_GLIBCXX_BEGIN_NAMESPACE_VERSION): Do not enclose namespace __detail. * include/bits/regex.tcc (_GLIBCXX_BEGIN_NAMESPACE_VERSION): Likewise. * include/std/iomanip (_GLIBCXX_BEGIN_NAMESPACE_VERSION): Likewise. * include/ext/pb_ds/tag_and_trait.hpp (detail): Fix comment. * testsuite/ext/profile/mutex_extensions_neg.cc: Adjust line number. Modified: trunk/libstdc++-v3/ChangeLog trunk/libstdc++-v3/include/bits/c++config trunk/libstdc++-v3/include/bits/regex.h trunk/libstdc++-v3/include/bits/regex.tcc trunk/libstdc++-v3/include/ext/pb_ds/tag_and_trait.hpp trunk/libstdc++-v3/include/std/iomanip trunk/libstdc++-v3/testsuite/ext/profile/mutex_extensions_neg.cc
[Bug libstdc++/59247] [4.9 Regression] Bootstrap fails due to errors in libstdc++ sources with `--enable-symvers=gnu-versioned-namespace'
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=59247 Jonathan Wakely redi at gcc dot gnu.org changed: What|Removed |Added Status|ASSIGNED|RESOLVED Resolution|--- |FIXED --- Comment #3 from Jonathan Wakely redi at gcc dot gnu.org --- Should be fixed, thanks for the report.
[Bug target/59054] Powerpc -O0 -mcpu=power7 generates sub-optimal code to load 0
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=59054 --- Comment #4 from Michael Meissner meissner at gcc dot gnu.org --- Author: meissner Date: Fri Nov 22 17:24:32 2013 New Revision: 205278 URL: http://gcc.gnu.org/viewcvs?rev=205278root=gccview=rev Log: 2013-11-22 Michael Meissner meiss...@linux.vnet.ibm.com PR target/59054 * gcc.target/powerpc/direct-move.h (VSX_REG_ATTR): Allow test to specify an appropriate register class for VSX operations. (load_vsx): Use it. (load_gpr_to_vsx): Likewise. (load_vsx_to_gpr): Likewise. * gcc.target/powerpc/direct-move-vint1.c: Use an appropriate register class for VSX registers that the type can handle. Remove checks for explicit number of instructions generated, just check if the instruction is generated. * gcc.target/powerpc/direct-move-vint2.c: Likewise. * gcc.target/powerpc/direct-move-float1.c: Likewise. * gcc.target/powerpc/direct-move-float2.c: Likewise. * gcc.target/powerpc/direct-move-double1.c: Likewise. * gcc.target/powerpc/direct-move-double2.c: Likewise. * gcc.target/powerpc/direct-move-long1.c: Likewise. * gcc.target/powerpc/direct-move-long2.c: Likewise. * gcc.target/powerpc/pr59054.c: Remove duplicate code. * gcc.target/powerpc/bool3-av.c: Limit to 64-bit mode for now. * gcc.target/powerpc/bool3-p7.c: Likewise. * gcc.target/powerpc/bool3-p8.c: Likewise. * gcc.target/powerpc/p8vector-ldst.c: Just check that the appropriate instructions are generated, don't check the count. Modified: trunk/gcc/testsuite/ChangeLog trunk/gcc/testsuite/gcc.target/powerpc/bool3-av.c trunk/gcc/testsuite/gcc.target/powerpc/bool3-p7.c trunk/gcc/testsuite/gcc.target/powerpc/bool3-p8.c trunk/gcc/testsuite/gcc.target/powerpc/direct-move-double1.c trunk/gcc/testsuite/gcc.target/powerpc/direct-move-double2.c trunk/gcc/testsuite/gcc.target/powerpc/direct-move-float1.c trunk/gcc/testsuite/gcc.target/powerpc/direct-move-float2.c trunk/gcc/testsuite/gcc.target/powerpc/direct-move-long1.c trunk/gcc/testsuite/gcc.target/powerpc/direct-move-long2.c trunk/gcc/testsuite/gcc.target/powerpc/direct-move-vint1.c trunk/gcc/testsuite/gcc.target/powerpc/direct-move-vint2.c trunk/gcc/testsuite/gcc.target/powerpc/direct-move.h trunk/gcc/testsuite/gcc.target/powerpc/p8vector-ldst.c trunk/gcc/testsuite/gcc.target/powerpc/pr59054.c
[Bug c/59219] ____builtin___memcpy_chk and -fno-builtin-memcpy
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=59219 --- Comment #4 from Martin Sebor msebor at gmail dot com --- I understand. The current semantics of __builtin__xxx_chk are to: a) check the constraints of the xxx function at compile time, and b) diagnose constraint violations detected in (a) and call __xxx_chk, or c) expand xxx inline if constraints are satisfied I'm suggesting that it would be useful to change the semantics in (c): c) if constraints are satisfied, then if -fbuiltin is used, expand xxx inline, or d) if -fno-builtin is used, call xxx I.e., reduce the effects of the __builtin__xxx_chk intrinsics to just checking the constraints, and (when -fno-builtin is used) make it possible to customize the implementation within those constraints. This would let freestanding implementations use the __builtin__xxx_chk intrinsics and also provide their own semantics for the xxx functions within the constraints specified by the language. (PS I belatedly realized that my mention of a freestanding sprintf using '$' to introduce a freestanding format directive didn't make sense as it would violate the function's constraint. Please diregard that part.)
[Bug c++/59256] qualified name in friend function declaration doesn't match previous declaration in inline namespace
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=59256 Paolo Carlini paolo.carlini at oracle dot com changed: What|Removed |Added Priority|P3 |P2 Status|UNCONFIRMED |NEW Last reconfirmed||2013-11-22 CC||jason at gcc dot gnu.org Ever confirmed|0 |1 --- Comment #1 from Paolo Carlini paolo.carlini at oracle dot com --- I understand this affects the library in a pretty serious way (http://gcc.gnu.org/ml/libstdc++/2013-11/msg00128.html) let's raise the priority and add Jason in CC.
[Bug web/56063] [bugzilla] last reconfirmed : now
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=56063 Frédéric Buclin LpSolit at netscape dot net changed: What|Removed |Added Status|NEW |ASSIGNED Last reconfirmed|2013-01-21 00:00:00 |2013-11-22 --- Comment #11 from Frédéric Buclin LpSolit at netscape dot net --- I added a Now link.
[Bug web/56063] [bugzilla] last reconfirmed : now
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=56063 Frédéric Buclin LpSolit at netscape dot net changed: What|Removed |Added Status|ASSIGNED|RESOLVED Resolution|--- |FIXED --- Comment #12 from Frédéric Buclin LpSolit at netscape dot net --- Works fine. Fixed!
[Bug web/45911] bugzilla: Changing status to assigned no longer auto-adjusts the assign-to field
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=45911 Frédéric Buclin LpSolit at netscape dot net changed: What|Removed |Added Status|NEW |RESOLVED Resolution|--- |WORKSFORME --- Comment #9 from Frédéric Buclin LpSolit at netscape dot net --- The take link exists besides the Assignee field.
[Bug c++/59256] qualified name in friend function declaration doesn't match previous declaration in inline namespace
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=59256 --- Comment #2 from Jonathan Wakely redi at gcc dot gnu.org --- It only affects --enable-symvers=gnu-versioned-namespace not the default config, but it makes regex unusable. We can work around it if needed by moving __regex_algo_impl out of the __detail namespace.
[Bug rtl-optimization/59138] [4.8/4.9 Regression] possible packed struct miscompile
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=59138
--- Comment #5 from Eric Botcazou ebotcazou at gcc dot gnu.org ---
Latent issue in the alias.c machinery: output_dependence returns 0 on
(insn 21 20 22 2 (set (mem/c:DI (const:DI (plus:DI (symbol_ref:DI (b)
[flags 0x2] var_decl 0x76e4d2f8 b)
(const_int 8 [0x8]))) [0 +8 S8 A64])
(reg:DI 1 dx [99])) pr59138.c:20 85 {*movdi_internal}
(expr_list:REG_DEAD (reg:DI 1 dx [99])
(nil)))
(insn 22 21 23 2 (set (mem/c:HI (symbol_ref:DI (a) [flags 0x2] var_decl
0x76e4d260 a) [2 a+0 S2 A16])
(const_int 0 [0])) pr59138.c:21 87 {*movhi_internal}
(nil))
because base_alias_check returns 0 for different symbols...
I guess this means that we shouldn't be accessing a when writing to b in
the first place, but get_best_mode decides otherwise. So this seems to be the
old issue with get_best_mode, visible directly on a bitfield write:
extern void abort (void);
#pragma pack(1)
struct S0 {
int f0;
int f1;
long long f2 : 48;
};
short a = 1;
struct S0 b = { 1 }, c;
long long fn1() { return c.f2; }
void fn2 (void)
{
b.f2 = fn1 ();
a = 0;
}
int main (void)
{
fn2 ();
if (a != 0)
abort ();
return 0;
}
with GCC 4.6 or earlier and presumably fixed by the implementation of the new
memory model.
[Bug target/58901] vax bootstrap fails on subreg reload
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=58901 --- Comment #5 from Martin Husemann martin at netbsd dot org --- Created attachment 31275 -- http://gcc.gnu.org/bugzilla/attachment.cgi?id=31275action=edit .i file from the failing compile
[Bug target/58901] vax bootstrap fails on subreg reload
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=58901 --- Comment #6 from Martin Husemann martin at netbsd dot org --- This is beyound my gcc capabilities: the rtx in question is wrong for vax, but the bug seems to be at a higher level: an indexed memory access can not be wrapped into a subreg with offset in the same statement - the rtx needs to be split into a register load and then subreg extraction (or so I think, not an expert in vax addressing modes)
[Bug middle-end/59138] [4.8/4.9 Regression] possible packed struct miscompile
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=59138 Eric Botcazou ebotcazou at gcc dot gnu.org changed: What|Removed |Added Component|rtl-optimization|middle-end --- Comment #6 from Eric Botcazou ebotcazou at gcc dot gnu.org --- Recategorizing.
[Bug target/59054] Powerpc -O0 -mcpu=power7 generates sub-optimal code to load 0
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=59054 --- Comment #5 from Michael Meissner meissner at gcc dot gnu.org --- Author: meissner Date: Fri Nov 22 19:20:46 2013 New Revision: 205280 URL: http://gcc.gnu.org/viewcvs?rev=205280root=gccview=rev Log: [gcc] 2013-11-22 Michael Meissner meiss...@linux.vnet.ibm.com Backport from mainline 2013-11-12 Michael Meissner meiss...@linux.vnet.ibm.com PR target/59054 * config/rs6000/rs6000.md (movdi_internal32): Eliminate constraints that would allow DImode into the traditional Altivec registers, but cause undesirable code generation when loading 0 as a constant. (movdi_internal64): Likewise. (cmpmode_fpr): Do not use %x for CR register output. (extendsfdf2_fpr): Fix constraints when -mallow-upper-df and -mallow-upper-sf debug switches are used. [gcc/testsuite] 2013-11-22 Michael Meissner meiss...@linux.vnet.ibm.com Backport from mainline 2013-11-22 Michael Meissner meiss...@linux.vnet.ibm.com PR target/59054 * gcc.target/powerpc/direct-move.h (VSX_REG_ATTR): Allow test to specify an appropriate register class for VSX operations. (load_vsx): Use it. (load_gpr_to_vsx): Likewise. (load_vsx_to_gpr): Likewise. * gcc.target/powerpc/direct-move-vint1.c: Use an appropriate register class for VSX registers that the type can handle. Remove checks for explicit number of instructions generated, just check if the instruction is generated. * gcc.target/powerpc/direct-move-vint2.c: Likewise. * gcc.target/powerpc/direct-move-float1.c: Likewise. * gcc.target/powerpc/direct-move-float2.c: Likewise. * gcc.target/powerpc/direct-move-double1.c: Likewise. * gcc.target/powerpc/direct-move-double2.c: Likewise. * gcc.target/powerpc/direct-move-long1.c: Likewise. * gcc.target/powerpc/direct-move-long2.c: Likewise. * gcc.target/powerpc/bool3-av.c: Limit to 64-bit mode for now. * gcc.target/powerpc/bool3-p7.c: Likewise. * gcc.target/powerpc/bool3-p8.c: Likewise. * gcc.target/powerpc/p8vector-ldst.c: Just check that the appropriate instructions are generated, don't check the count. 2013-11-12 Michael Meissner meiss...@linux.vnet.ibm.com PR target/59054 * gcc.target/powerpc/pr59054.c: New test. Added: branches/ibm/gcc-4_8-branch/gcc/testsuite/gcc.target/powerpc/pr59054.c Modified: branches/ibm/gcc-4_8-branch/gcc/ChangeLog.ibm branches/ibm/gcc-4_8-branch/gcc/config/rs6000/rs6000.md branches/ibm/gcc-4_8-branch/gcc/testsuite/ChangeLog.ibm branches/ibm/gcc-4_8-branch/gcc/testsuite/gcc.target/powerpc/bool3-av.c branches/ibm/gcc-4_8-branch/gcc/testsuite/gcc.target/powerpc/bool3-p7.c branches/ibm/gcc-4_8-branch/gcc/testsuite/gcc.target/powerpc/bool3-p8.c branches/ibm/gcc-4_8-branch/gcc/testsuite/gcc.target/powerpc/direct-move-double1.c branches/ibm/gcc-4_8-branch/gcc/testsuite/gcc.target/powerpc/direct-move-double2.c branches/ibm/gcc-4_8-branch/gcc/testsuite/gcc.target/powerpc/direct-move-float1.c branches/ibm/gcc-4_8-branch/gcc/testsuite/gcc.target/powerpc/direct-move-float2.c branches/ibm/gcc-4_8-branch/gcc/testsuite/gcc.target/powerpc/direct-move-long1.c branches/ibm/gcc-4_8-branch/gcc/testsuite/gcc.target/powerpc/direct-move-long2.c branches/ibm/gcc-4_8-branch/gcc/testsuite/gcc.target/powerpc/direct-move-vint1.c branches/ibm/gcc-4_8-branch/gcc/testsuite/gcc.target/powerpc/direct-move-vint2.c branches/ibm/gcc-4_8-branch/gcc/testsuite/gcc.target/powerpc/direct-move.h branches/ibm/gcc-4_8-branch/gcc/testsuite/gcc.target/powerpc/p8vector-ldst.c
[Bug bootstrap/59235] [4.9 regression] SEGV in sparc_output_scratch_registers
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=59235 Jeffrey A. Law law at redhat dot com changed: What|Removed |Added Status|NEW |RESOLVED Resolution|--- |DUPLICATE --- Comment #5 from Jeffrey A. Law law at redhat dot com --- Per c#4. *** This bug has been marked as a duplicate of bug 59221 ***
[Bug tree-optimization/59221] [4.9 Regression] wrong code at -O2 and -O3 on x86_64-linux-gnu
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=59221 Jeffrey A. Law law at redhat dot com changed: What|Removed |Added CC||ro at gcc dot gnu.org --- Comment #8 from Jeffrey A. Law law at redhat dot com --- *** Bug 59235 has been marked as a duplicate of this bug. ***
[Bug tree-optimization/19794] [meta-bug] Jump threading related bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=19794 Bug 19794 depends on bug 54742, which changed state. Bug 54742 Summary: Switch elimination in FSM loop http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54742 What|Removed |Added Status|NEW |RESOLVED Resolution|--- |FIXED
[Bug tree-optimization/54742] Switch elimination in FSM loop
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54742 Jeffrey A. Law law at redhat dot com changed: What|Removed |Added Status|NEW |RESOLVED Resolution|--- |FIXED --- Comment #26 from Jeffrey A. Law law at redhat dot com --- Fixed on trunk.
[Bug rtl-optimization/10474] shrink wrapping for functions
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=10474 --- Comment #16 from Jeffrey A. Law law at gcc dot gnu.org --- Author: law Date: Fri Nov 22 19:37:00 2013 New Revision: 205281 URL: http://gcc.gnu.org/viewcvs?rev=205281root=gccview=rev Log: PR rtl-optimization/10474 * ira.c (interesting_dest_for_shprep_1): New function. (interesting_dest_for_shprep): Use interesting_dest_for_shprep_1, also check parallels. testsuite/ * gcc.dg/pr10474.c: Also test ppc64. * gcc.dg/ira-shrinkwrap-prep-1.c: Also tes ppc64, changed all ints to longs. * gcc.dg/ira-shrinkwrap-prep-2.c: Likewise. Modified: trunk/gcc/ChangeLog trunk/gcc/ira.c trunk/gcc/testsuite/ChangeLog trunk/gcc/testsuite/gcc.dg/ira-shrinkwrap-prep-1.c trunk/gcc/testsuite/gcc.dg/ira-shrinkwrap-prep-2.c trunk/gcc/testsuite/gcc.dg/pr10474.c
[Bug c++/57640] Explicit call of system literal operator complains about leading underscore.
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=57640 Ed Smith-Rowland 3dw4rd at verizon dot net changed: What|Removed |Added Status|UNCONFIRMED |RESOLVED Resolution|--- |FIXED --- Comment #2 from Ed Smith-Rowland 3dw4rd at verizon dot net --- This has been fixed for a while now. gcc/cp: 2013-06-25 Ed Smith-Rowland 3dw...@verizon.net PR c++/57640 * parser.c (cp_parser_unqualified_id): Add declarator_p to checks to trigger warning, (cp_literal_operator_id): Remove bogus TODO comment. gcc/testsuite: 2013-06-25 Ed Smith-Rowland 3dw...@verizon.net PR c++/57640 * g++.dg/cpp1y/pr57640.C: New.
[Bug target/58314] SH4 error: 'asm' operand requires impossible reload
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=58314
--- Comment #11 from Oleg Endo olegendo at gcc dot gnu.org ---
(In reply to Oleg Endo from comment #10)
This usually happens because SH2A insns are output -- 32 bit displacement
addressing insns which are more flexible -- even though the target is
non-SH2A. This is what the comment above the reg_reg pattern is talking
about.
(There is no compiler error because the target type is not passed down to
the assembler by the compiler).
This patch can be applied to enable the error message by the assembler:
Index: gcc/config/sh/sh.h
===
--- gcc/config/sh/sh.h(revision 205190)
+++ gcc/config/sh/sh.h(working copy)
@@ -267,9 +267,25 @@
#define SUBTARGET_ASM_RELAX_SPEC %{m4*:-isa=sh4-up}
#endif
+/* Define which ISA type to pass to the assembler.
+ For SH4 we pass SH4A to allow using some instructions that are available
+ on some SH4 variants, but officially are part of the SH4A ISA. */
#define SH_ASM_SPEC \
%(subtarget_asm_endian_spec) %{mrelax:-relax %(subtarget_asm_relax_spec)} \
%(subtarget_asm_isa_spec) %(subtarget_asm_spec) \
+%{m1:--isa=sh} \
+%{m2:--isa=sh2} \
+%{m2e:--isa=sh2e} \
+%{m3:--isa=sh3} \
+%{m3e:--isa=sh3e} \
+%{m4:--isa=sh4a} \
+%{m4-single:--isa=sh4a} \
+%{m4-single-only:--isa=sh4a} \
+%{m4-nofpu:--isa=sh4a-nofpu} \
+%{m4a:--isa=sh4a} \
+%{m4a-single:--isa=sh4a} \
+%{m4a-single-only:--isa=sh4a} \
+%{m4a-nofpu:--isa=sh4a-nofpu} \
%{m2a:--isa=sh2a} \
%{m2a-single:--isa=sh2a} \
%{m2a-single-only:--isa=sh2a} \
[Bug bootstrap/42825] bootstrap fails: /usr/bin/ld: can't locate file for: -lgcc_s.10.4
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=42825 Ed Smith-Rowland 3dw4rd at verizon dot net changed: What|Removed |Added Status|UNCONFIRMED |RESOLVED Resolution|--- |WONTFIX --- Comment #3 from Ed Smith-Rowland 3dw4rd at verizon dot net --- The workaround worked and in any case, the machine and OS is dead.
[Bug target/48014] Bootstrap fails in stage2 on Fortran front end typedef collision.
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=48014 Ed Smith-Rowland 3dw4rd at verizon dot net changed: What|Removed |Added Status|WAITING |RESOLVED Resolution|--- |WONTFIX --- Comment #3 from Ed Smith-Rowland 3dw4rd at verizon dot net --- This platform and OS is dead.
[Bug target/58314] SH4 error: 'asm' operand requires impossible reload
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=58314
--- Comment #12 from Oleg Endo olegendo at gcc dot gnu.org ---
(In reply to Oleg Endo from comment #10)
FAIL: gcc.dg/torture/vshuf-v16hi.c -O2 (test for excess errors)
Excess errors:
/usr/local/sh-elf/bin/ld: internal error: merge of architecture 'sh3e' with
architecture 'sh2a-nofpu' produced unknown architecture
/usr/local/sh-elf/bin/ld: /tmp/ccRPtSqs.o: uses instructions which are
incompatible with instructions used in previous modules
/usr/local/sh-elf/bin/ld: failed to merge target specific data of file
/tmp/ccRPtSqs.o
Below is the reduced test case that fails when compiled with -O2 -m4 -mb
when the r,r constraints are allowed in the *movhi pattern and the
*movmode_reg_reg pattern is disabled. So the comment above the
*movmode_reg_reg pattern is still correct.
typedef unsigned short V __attribute__((vector_size(32)));
typedef V VI;
extern void abort (void);
V a, b, c, d;
__attribute__((noinline, noclone)) void
test_14 (void)
{
VI mask = { 25, 5, 17, 1, 9, 15, 21, 7, 28, 2, 18, 13, 30, 14, 10, 4 };
int i;
c = __builtin_shuffle (a, mask);
d = __builtin_shuffle (a, b, mask);
__asm ( : : r (c), r (d) : memory);
for (i = 0; i 16; ++i)
if (c[i] != a[mask[i] (16 - 1)])
abort ();
else if ((mask[i] 16))
{
if (d[i] != b[mask[i] (16 - 1)])
abort ();
}
else if (d[i] != a[mask[i] (16 - 1)])
abort ();
}
