[Bug tree-optimization/49730] loop not vectorized if inside another loop
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49730 Ira Rosen irar at il dot ibm.com changed: What|Removed |Added CC||irar at il dot ibm.com --- Comment #2 from Ira Rosen irar at il dot ibm.com 2011-07-14 06:35:39 UTC --- There is no limitation on the number of reductions in vectorization. The problem here is a non-empty latch block. There are several existing PRs for similar problems: pr 33447, pr 28643. Ira
[Bug target/43746] -fmerge-constants and -fmerge-all-constants don't work at AVR target
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=43746 --- Comment #4 from Georg-Johann Lay gjl at gcc dot gnu.org 2011-07-14 07:49:19 UTC --- Author: gjl Date: Thu Jul 14 07:49:14 2011 New Revision: 176262 URL: http://gcc.gnu.org/viewcvs?root=gccview=revrev=176262 Log: gcc/ PR target/43746 * config/avr/elf.h (TARGET_ASM_SELECT_SECTION): Remove, i.e. use default_elf_select_section. (TARGET_HAVE_SWITCHABLE_BSS_SECTIONS): Remove. (READONLY_DATA_SECTION_ASM_OP): Remove. (TARGET_ASM_NAMED_SECTION): Move from here... * config/avr/avr.c: ...to here. (avr_asm_init_sections): Set unnamed callback of readonly_data_section. (avr_asm_named_section): Make static. testsuite/ PR target/43746 * gcc.dg/array-quals-1.c: Don't xfail on AVR. Modified: trunk/gcc/ChangeLog trunk/gcc/config/avr/avr.c trunk/gcc/config/avr/elf.h trunk/gcc/testsuite/ChangeLog trunk/gcc/testsuite/gcc.dg/array-quals-1.c
[Bug target/43746] -fmerge-constants and -fmerge-all-constants don't work at AVR target
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=43746 Georg-Johann Lay gjl at gcc dot gnu.org changed: What|Removed |Added Keywords||missed-optimization Status|UNCONFIRMED |NEW Last reconfirmed||2011.07.14 07:52:52 CC||gjl at gcc dot gnu.org Target Milestone|--- |4.7.0 Ever Confirmed|0 |1 --- Comment #5 from Georg-Johann Lay gjl at gcc dot gnu.org 2011-07-14 07:52:52 UTC --- Set the status to NEW. The above patch fixes constant merging for constants in .rodata which is mapped into RAM for AVR. To make it work for .progmem (data in Flash) requires a seperate patch.
[Bug ada/48711] [4.6/4.7 regression] failure to bootstrap or build ada for mingw (value not in range of type Interfaces.C.unsigned in g-socthi.adb)
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=48711 Eric Botcazou ebotcazou at gcc dot gnu.org changed: What|Removed |Added CC||ivansavvateev at yandex dot ||ru --- Comment #3 from Eric Botcazou ebotcazou at gcc dot gnu.org 2011-07-14 07:59:05 UTC --- *** Bug 49625 has been marked as a duplicate of this bug. ***
[Bug ada/48151] Bootstrap failure in stage3 comparison
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=48151 Eric Botcazou ebotcazou at gcc dot gnu.org changed: What|Removed |Added Status|UNCONFIRMED |RESOLVED CC||ebotcazou at gcc dot ||gnu.org Resolution||DUPLICATE --- Comment #6 from Eric Botcazou ebotcazou at gcc dot gnu.org 2011-07-14 07:59:59 UTC --- For the g-socthi.adb failure. *** This bug has been marked as a duplicate of bug 48711 ***
[Bug bootstrap/49625] GCC 4.6.* with Ada can't bootstrapped on MINGW
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49625 Eric Botcazou ebotcazou at gcc dot gnu.org changed: What|Removed |Added Status|UNCONFIRMED |RESOLVED CC||ebotcazou at gcc dot ||gnu.org Resolution||DUPLICATE --- Comment #1 from Eric Botcazou ebotcazou at gcc dot gnu.org 2011-07-14 07:59:05 UTC --- . *** This bug has been marked as a duplicate of bug 48711 ***
[Bug ada/48711] [4.6/4.7 regression] failure to bootstrap or build ada for mingw (value not in range of type Interfaces.C.unsigned in g-socthi.adb)
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=48711 Eric Botcazou ebotcazou at gcc dot gnu.org changed: What|Removed |Added CC||anhvofrcaus at gmail dot ||com --- Comment #4 from Eric Botcazou ebotcazou at gcc dot gnu.org 2011-07-14 07:59:59 UTC --- *** Bug 48151 has been marked as a duplicate of this bug. ***
[Bug bootstrap/49737] [4.7 Regression] Bootstrap failure at revision 176240 on x86_64-apple-darwin10
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49737 Dominique d'Humieres dominiq at lps dot ens.fr changed: What|Removed |Added Status|UNCONFIRMED |RESOLVED Resolution||FIXED --- Comment #9 from Dominique d'Humieres dominiq at lps dot ens.fr 2011-07-14 08:00:48 UTC --- Bootstrap finished, closing as fixed, thanks.
[Bug ada/48711] [4.6/4.7 regression] failure to bootstrap or build ada for mingw (value not in range of type Interfaces.C.unsigned in g-socthi.adb)
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=48711 Eric Botcazou ebotcazou at gcc dot gnu.org changed: What|Removed |Added Status|UNCONFIRMED |ASSIGNED Last reconfirmed||2011.07.14 08:02:16 CC||ebotcazou at gcc dot ||gnu.org AssignedTo|unassigned at gcc dot |ebotcazou at gcc dot |gnu.org |gnu.org Ever Confirmed|0 |1 --- Comment #5 from Eric Botcazou ebotcazou at gcc dot gnu.org 2011-07-14 08:02:16 UTC --- Thanks, I'm going to install the patch.
[Bug ada/49732] GNAT 4.6.[01] crashes on terminal_interface-curses-menus.adb from ncruses 5.9
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49732 Eric Botcazou ebotcazou at gcc dot gnu.org changed: What|Removed |Added Status|UNCONFIRMED |WAITING Last reconfirmed||2011.07.14 08:18:37 CC||ebotcazou at gcc dot ||gnu.org Ever Confirmed|0 |1 --- Comment #1 from Eric Botcazou ebotcazou at gcc dot gnu.org 2011-07-14 08:18:37 UTC --- Please find out which compilation option is responsible for the crash instead.
[Bug tree-optimization/49725] [4.6 Regression] FAIL: c34005a
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49725 Eric Botcazou ebotcazou at gcc dot gnu.org changed: What|Removed |Added Status|UNCONFIRMED |NEW Last reconfirmed||2011.07.14 08:35:08 CC||ebotcazou at gcc dot ||gnu.org, jamborm at gcc dot ||gnu.org Component|ada |tree-optimization Ever Confirmed|0 |1 --- Comment #3 from Eric Botcazou ebotcazou at gcc dot gnu.org 2011-07-14 08:35:08 UTC --- Confirmed as coming from Martin's patch.
[Bug tree-optimization/49724] [4.6/4.7 Regression] FAIL: gnat.dg/socket1.adb execution test
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49724 Eric Botcazou ebotcazou at gcc dot gnu.org changed: What|Removed |Added Status|UNCONFIRMED |WAITING Last reconfirmed||2011.07.14 08:39:48 CC||ebotcazou at gcc dot ||gnu.org, jamborm at gcc dot ||gnu.org Component|ada |tree-optimization Ever Confirmed|0 |1 --- Comment #1 from Eric Botcazou ebotcazou at gcc dot gnu.org 2011-07-14 08:39:48 UTC --- Can you confirm that this also comes from Martin's patch on the 4.6 branch?
[Bug tree-optimization/49725] [4.6 Regression] FAIL: c34005a
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49725 --- Comment #4 from Martin Jambor jamborm at gcc dot gnu.org 2011-07-14 08:41:36 UTC --- I will have a look at it next week (if it can be reproduced on the hppa in the compile farm). Nevertheless, the interesting thing is that the patch only makes SRA to do less, never more. Does the ICE happen even if you switch SRA off completely with -fno-tree-sra ? Thanks.
[Bug ada/46350] s-taprop.adb:891:40: warning: redundant conversion, expression is of type Interrupt_ID
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=46350 Eric Botcazou ebotcazou at gcc dot gnu.org changed: What|Removed |Added Status|UNCONFIRMED |WAITING Last reconfirmed||2011.07.14 08:44:07 Target Milestone|--- |4.6.2 Ever Confirmed|0 |1 --- Comment #4 from Eric Botcazou ebotcazou at gcc dot gnu.org 2011-07-14 08:44:07 UTC --- Can you submit the patch if it works?
[Bug ada/48835] Porting GNAT to GNU/Linux/m68k
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=48835
Mikael Pettersson mikpe at it dot uu.se changed:
What|Removed |Added
Attachment #24491|0 |1
is obsolete||
--- Comment #23 from Mikael Pettersson mikpe at it dot uu.se 2011-07-14
08:44:51 UTC ---
Created attachment 24753
-- http://gcc.gnu.org/bugzilla/attachment.cgi?id=24753
working patch for gcc-4.5.3 (v4)
Here's the current working patch I'm using with gcc-4.5.3 on m68k-linux. As
the diffstat shows
gcc/ada/gcc-interface/Makefile.in | 28 ++
gcc/ada/s-memory.adb | 17
gcc/ada/s-memory.ads |1
gcc/ada/system-linux-m68k.ads | 153
++
4 files changed, 198 insertions(+), 1 deletion(-)
not much is needed beyond the obvious target fragment in Makefile.in and the
new system-linux-m68k.ads. The s-memory.ad{b,s} patches work around the
__gnat_malloc issue by adding a private Gnat_Malloc wrapper function that
returns a proper pointer, and changing the __gnat_malloc export to refer to
that function rather than the integer-returning Alloc function. This should be
safe though unnecessary on other platforms (initially tested on i686).
If the special attribute is implemented, then what it needs to do is to say
that a particular integer-typed function (from Ada's perspective) should be
treated as returning the equivalent of C's void*, with unchecked conversions
inserted in the function's return points and in every caller.
In principle at least three functions need this treatment: __gnat_malloc,
__gnat_realloc, and system__soft_links__get_jmpbuf_address_soft. However,
__gnat_realloc doesn't seem to be used by gnat itself, and ..get_jmpbuf..
doesn't appear to be needed for ZCX EH (I did have to patch get_jmpbuf_decl
related code earlier when I still used SJLJ EH).
Once my current final verification bootstrap finishes I'll upload the gcc-4.5.3
binaries and start working on gcc-4.6.1 and gcc-4.7.0.
[Bug tree-optimization/49452] [4.7 regression] comp-goto-2.c regresses in testing
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49452 Eric Botcazou ebotcazou at gcc dot gnu.org changed: What|Removed |Added Version|unknown |4.7.0 Target Milestone|--- |4.7.0 Summary|comp-goto-2.c regresses in |[4.7 regression] |testing |comp-goto-2.c regresses in ||testing Severity|normal |major
[Bug testsuite/48727] FAIL: g++.dg/opt/devirt2.C scan-assembler-times xyzzy 2
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=48727 Eric Botcazou ebotcazou at gcc dot gnu.org changed: What|Removed |Added Status|NEW |RESOLVED Resolution||FIXED --- Comment #8 from Eric Botcazou ebotcazou at gcc dot gnu.org 2011-07-14 08:48:19 UTC --- Everywhere.
[Bug rtl-optimization/48757] [4.5/4.6 Regression] internal compiler error: in compensate_edge, at reg-stack.c:2788
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=48757 --- Comment #9 from Eric Botcazou ebotcazou at gcc dot gnu.org 2011-07-14 08:50:48 UTC --- Vlad, is the fix backportable to release branches, at least the 4.6 branch?
[Bug tree-optimization/49725] [4.6 Regression] FAIL: c34005a
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49725 --- Comment #5 from Eric Botcazou ebotcazou at gcc dot gnu.org 2011-07-14 08:58:42 UTC --- I will have a look at it next week (if it can be reproduced on the hppa in the compile farm). A cross-compiler from your favorite linux box is sufficient. Nevertheless, the interesting thing is that the patch only makes SRA to do less, never more. Does the ICE happen even if you switch SRA off completely with -fno-tree-sra ? Hum, yes, you're right, the ICE comes from PRE, not SRA.
[Bug middle-end/49733] Missed optimization: Variable value not propagated to remove if condition
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49733 --- Comment #5 from Richard Guenther rguenth at gcc dot gnu.org 2011-07-14 09:03:58 UTC --- Ah, so passing the non-aliasing-var to a function which takes a POINTER argument, returning that pointer and modifying it in the function that takes the non-aliasing-var is ok then? The Fortran semantics seem unclear enough to me to doubt that there is a clean orthogonal representation for the middle-end.
[Bug bootstrap/49737] [4.7 Regression] Bootstrap failure at revision 176240 on x86_64-apple-darwin10
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49737 Richard Guenther rguenth at gcc dot gnu.org changed: What|Removed |Added Target Milestone|--- |4.7.0
[Bug middle-end/49736] [4.7 Regression] Revision 176228 miscompiled 255.vortex in SPEC CPU 2000
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49736 Richard Guenther rguenth at gcc dot gnu.org changed: What|Removed |Added Keywords||wrong-code Target Milestone|--- |4.7.0
[Bug tree-optimization/49725] [4.6 Regression] FAIL: c34005a
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49725 Eric Botcazou ebotcazou at gcc dot gnu.org changed: What|Removed |Added Status|NEW |ASSIGNED AssignedTo|unassigned at gcc dot |ebotcazou at gcc dot |gnu.org |gnu.org --- Comment #6 from Eric Botcazou ebotcazou at gcc dot gnu.org 2011-07-14 09:07:09 UTC --- Hum, yes, you're right, the ICE comes from PRE, not SRA. And is fixed by backporting 2011-03-31 Eric Botcazou ebotca...@adacore.com * tree-ssa-pre.c (create_component_ref_by_pieces_1) ARRAY_REF: Drop a zero minimum index only if it is redundant. onto the branch. Testing...
[Bug tree-optimization/49735] [4.7 Regression] mips64-elf libgcc build fails with apparently infinite recursion.
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49735 --- Comment #5 from Richard Guenther rguenth at gcc dot gnu.org 2011-07-14 09:05:32 UTC --- It probably papers over a different issue though - even recursive inlining should be limited by a --param, but appearantly that is not working here. Honza?
[Bug bootstrap/49739] [4.7 Regression] bootstrap failure
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49739 Richard Guenther rguenth at gcc dot gnu.org changed: What|Removed |Added Status|UNCONFIRMED |RESOLVED Resolution||FIXED Target Milestone|--- |4.7.0 --- Comment #5 from Richard Guenther rguenth at gcc dot gnu.org 2011-07-14 09:07:57 UTC --- Fixed.
[Bug target/49743] -g enables var_tracking on -O0 - causes long compilations
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49743 Richard Guenther rguenth at gcc dot gnu.org changed: What|Removed |Added Status|UNCONFIRMED |NEW Last reconfirmed||2011.07.14 09:09:24 Component|c |target Ever Confirmed|0 |1 --- Comment #1 from Richard Guenther rguenth at gcc dot gnu.org 2011-07-14 09:09:24 UTC --- var-tracking isn't supposed to run at -O0.
[Bug bootstrap/49740] [4.7 Regression] powerpc native bootstrap with -O3 produces Bootstrap comparison failure!
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49740 Richard Guenther rguenth at gcc dot gnu.org changed: What|Removed |Added Target||powerpc-*-* Target Milestone|--- |4.7.0
[Bug target/49742] [4.7 Regression] ICE for gcc.dg/vect/O3-pr39675-2.c on ARM
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49742 Richard Guenther rguenth at gcc dot gnu.org changed: What|Removed |Added Target||arm-*-* Component|tree-optimization |target Target Milestone|--- |4.7.0 Summary|ICE for |[4.7 Regression] ICE for |gcc.dg/vect/O3-pr39675-2.c |gcc.dg/vect/O3-pr39675-2.c |on ARM |on ARM --- Comment #1 from Richard Guenther rguenth at gcc dot gnu.org 2011-07-14 09:08:55 UTC --- Looks like a target issue.
[Bug tree-optimization/49724] [4.6/4.7 Regression] FAIL: gnat.dg/socket1.adb execution test
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49724 --- Comment #2 from Eric Botcazou ebotcazou at gcc dot gnu.org 2011-07-14 09:13:19 UTC --- Based on Martin's comment in the other PR, I wonder whether this isn't rather a temporary failure because of a glitch on the host. Can you reproduce it?
[Bug bootstrap/49739] [4.7 Regression] bootstrap failure
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49739 --- Comment #6 from ro at CeBiTec dot Uni-Bielefeld.DE ro at CeBiTec dot Uni-Bielefeld.DE 2011-07-14 09:18:14 UTC --- It doesn't work and build failed much earlier: Patch is missing '}'. Thanks for fixing this. That's what you get for providing an untested patch minutes before you have to leave ;-) Rainer
[Bug middle-end/49733] Missed optimization: Variable value not propagated to remove if condition
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49733 --- Comment #6 from Tobias Burnus burnus at gcc dot gnu.org 2011-07-14 09:25:31 UTC --- (In reply to comment #5) Ah, so passing the non-aliasing-var to a function which takes a POINTER argument, returning that pointer and modifying it in the function that takes the non-aliasing-var is ok then? POINTER in the C/middle-end or in the Fortran sense? Passing a non-(Fortran-)POINTER variable as actual argument to a (Fortran-)POINTER dummy argument is only valid, if the dummy is INTENT(IN) and if the actual argument is TARGET. The INTENT(IN) makes sure that one does not change the address to which the pointer points - and the TARGET avoids aliasing issues. (Cf. 12.5.2.7 Pointer dummy variables.) Thus, non-aliasing-var may not be passed passed to a POINTER dummy argument.
[Bug ada/48711] [4.6/4.7 regression] failure to bootstrap or build ada for mingw (value not in range of type Interfaces.C.unsigned in g-socthi.adb)
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=48711 --- Comment #6 from Eric Botcazou ebotcazou at gcc dot gnu.org 2011-07-14 09:27:25 UTC --- Author: ebotcazou Date: Thu Jul 14 09:27:22 2011 New Revision: 176265 URL: http://gcc.gnu.org/viewcvs?root=gccview=revrev=176265 Log: PR ada/48711 * g-socthi-mingw.adb (Fill): Guard against invalid MSG_WAITALL. Modified: trunk/gcc/ada/ChangeLog trunk/gcc/ada/g-socthi-mingw.adb
[Bug plugins/49744] New: Use of prev-gcc/xgcc as PLUGINCC breaks bootstap-lean tests
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49744
Summary: Use of prev-gcc/xgcc as PLUGINCC breaks bootstap-lean
tests
Product: gcc
Version: 4.7.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: plugins
AssignedTo: unassig...@gcc.gnu.org
ReportedBy: r...@gcc.gnu.org
CC: dnovi...@gcc.gnu.org
I've often observed that the plugin tests come up as UNSUPPORTED, either in
a bootstrap-lean build of if I've removed {stage1,prev}-* to save space.
This happens because for some reason PLUGINCC is set to prev-gcc/xgcc, which
may not exist any longer at this point.
[Bug ada/48711] [4.6/4.7 regression] failure to bootstrap or build ada for mingw (value not in range of type Interfaces.C.unsigned in g-socthi.adb)
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=48711 --- Comment #7 from Eric Botcazou ebotcazou at gcc dot gnu.org 2011-07-14 09:27:41 UTC --- Author: ebotcazou Date: Thu Jul 14 09:27:39 2011 New Revision: 176266 URL: http://gcc.gnu.org/viewcvs?root=gccview=revrev=176266 Log: PR ada/48711 * g-socthi-mingw.adb (Fill): Guard against invalid MSG_WAITALL. Modified: branches/gcc-4_6-branch/gcc/ada/ChangeLog branches/gcc-4_6-branch/gcc/ada/g-socthi-mingw.adb
[Bug ada/48711] [4.6/4.7 regression] failure to bootstrap or build ada for mingw (value not in range of type Interfaces.C.unsigned in g-socthi.adb)
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=48711 Eric Botcazou ebotcazou at gcc dot gnu.org changed: What|Removed |Added Status|ASSIGNED|RESOLVED Resolution||FIXED Target Milestone|--- |4.6.2 --- Comment #8 from Eric Botcazou ebotcazou at gcc dot gnu.org 2011-07-14 09:30:47 UTC --- Thanks for reporting the problem and tracking down the fix.
[Bug plugins/49744] Use of prev-gcc/xgcc as PLUGINCC breaks bootstap-lean tests
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49744
Eric Botcazou ebotcazou at gcc dot gnu.org changed:
What|Removed |Added
Status|UNCONFIRMED |NEW
Last reconfirmed||2011.07.14 09:44:42
CC||ebotcazou at gcc dot
||gnu.org
Ever Confirmed|0 |1
--- Comment #1 from Eric Botcazou ebotcazou at gcc dot gnu.org 2011-07-14
09:44:42 UTC ---
I've often observed that the plugin tests come up as UNSUPPORTED, either in
a bootstrap-lean build of if I've removed {stage1,prev}-* to save space.
This happens because for some reason PLUGINCC is set to prev-gcc/xgcc, which
may not exist any longer at this point.
PLUGINCC must be in keeping with the auto-host.h file of the last stage if you
bootstrap the compiler. Or else the plugin test harness must be modified.
[Bug middle-end/49736] [4.7 Regression] Revision 176228 miscompiled 255.vortex in SPEC CPU 2000
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49736 rsand...@gcc.gnu.org rsandifo at gcc dot gnu.org changed: What|Removed |Added AssignedTo|unassigned at gcc dot |rsandifo at gcc dot gnu.org |gnu.org | Target Milestone|4.7.0 |--- --- Comment #1 from rsandifo at gcc dot gnu.org rsandifo at gcc dot gnu.org 2011-07-14 10:26:38 UTC --- Confirmed.
[Bug c++/49745] New: error: ‘int truncate’ redeclared as different kind of symbol
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49745
Summary: error: ‘int truncate’ redeclared as different kind of
symbol
Product: gcc
Version: 4.4.5
Status: UNCONFIRMED
Severity: major
Priority: P3
Component: c++
AssignedTo: unassig...@gcc.gnu.org
ReportedBy: mathieu.malate...@gmail.com
Hi,
g++ pollutes the global namespace. The following does not compile with G++
4.4.5:
#include iostream
int truncate = 0;
int main()
{
return 0;
}
If fails with:
t.cxx:2: error: ‘int truncate’ redeclared as different kind of symbol
/usr/include/unistd.h:998: error: previous declaration of ‘int truncate(const
char*, __off_t)’
Thanks !
[Bug middle-end/49736] [4.7 Regression] Revision 176228 miscompiled 255.vortex in SPEC CPU 2000
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49736 Richard Guenther rguenth at gcc dot gnu.org changed: What|Removed |Added Status|UNCONFIRMED |ASSIGNED Last reconfirmed||2011.07.14 10:31:23 Ever Confirmed|0 |1
[Bug middle-end/49736] [4.7 Regression] Revision 176228 miscompiled 255.vortex in SPEC CPU 2000
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49736 Richard Guenther rguenth at gcc dot gnu.org changed: What|Removed |Added Target Milestone|--- |4.7.0
[Bug libstdc++/49745] error: ‘int truncate’ redeclared as different kind of symbol
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49745 Richard Guenther rguenth at gcc dot gnu.org changed: What|Removed |Added Status|UNCONFIRMED |NEW Last reconfirmed||2011.07.14 10:30:57 Component|c++ |libstdc++ Ever Confirmed|0 |1 Known to fail||4.6.1 Severity|major |normal --- Comment #1 from Richard Guenther rguenth at gcc dot gnu.org 2011-07-14 10:30:57 UTC --- Confirmed.
[Bug target/49746] New: Generated PA-RISC2.0w code cannot be assembled by GNU as-2.21.1
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49746 Summary: Generated PA-RISC2.0w code cannot be assembled by GNU as-2.21.1 Product: gcc Version: 4.6.1 Status: UNCONFIRMED Severity: blocker Priority: P3 Component: target AssignedTo: unassig...@gcc.gnu.org ReportedBy: h.m.br...@xs4all.nl using gcc (GCC) 3.4.6 GNU assembler (GNU Binutils) 2.21.1 GNU ld (GNU Binutils) 2.21.1 gmp-5.0.2 mpfr-3.0.1 mpc-0.8.2 to build a 64bit GNU gcc 4.6.1 on HP-UX 11.11 (PA-RISC 2.0w) export ABI=2.0w export SHELL=/pro/local/bin/bash export PREFIX=/usr/local/pa20_64 export CONFIG_SITE= export CC=gcc64 export CFLAGS=-mpa-risc-2-0 -fPIC export CXXFLAGS=-mpa-risc-2-0 -fPIC ../src/configure \ --enable-languages=c,c++ \ --prefix=$PREFIX --with-local-prefix=$PREFIX \ --with-gnu-as--with-as=$PREFIX/bin/as \ --without-gnu-ld --with-ld=/usr/ccs/bin/ld \ --with-gmp=$PREFIX \ --with-mpfr=$PREFIX \ --disable-shared \ --disable-nls \ --host=hppa64-hp-hpux11.11 make : : gcc64 -c -g -fkeep-inline-functions -DIN_GCC -W -Wall -Wwrite-strings -Wcast-qual -Wstrict-prototypes -Wmissing-prototypes -Wmissing-format-attribute -Wold-style-definition -fno-common -DHAVE_CONFIG_H -I. -I. -I../../src/gcc -I../../src/gcc/. -I../../src/gcc/../include -I../../src/gcc/../libcpp/include -I/usr/local/pa20_64/include -I/usr/local/pa20_64/include -I../../src/gcc/../libdecnumber -I../../src/gcc/../libdecnumber/dpd -I../libdecnumber -I/usr/local/pa20_64/include ../../src/gcc/graphite-clast-to-gimple.c -o graphite-clast-to-gimple.o /tmp/ccPcqVug.s: Assembler messages: /tmp/ccPcqVug.s:137659: Error: Field out of range [-262144..262143] (322212). /tmp/ccPcqVug.s:137661: Error: Field out of range [-262144..262143] (322828). /tmp/ccPcqVug.s:137663: Error: Field out of range [-262144..262143] (322820). /tmp/ccPcqVug.s:137665: Error: Field out of range [-262144..262143] (322812). : : /tmp/ccPcqVug.s:137855: Error: Field out of range [-262144..262143] (322052). /tmp/ccPcqVug.s:137857: Error: Field out of range [-262144..262143] (322044). /tmp/ccPcqVug.s:137859: Error: Field out of range [-262144..262143] (322036). make[3]: *** [fold-const.o] Error 1 make[3]: *** Waiting for unfinished jobs make[3]: Leaving directory `/pro/3gl/GNU/gcc/obj-64/gcc'
[Bug libstdc++/49745] error: ‘int truncate’ redeclared as different kind of symbol
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49745 --- Comment #2 from Jonathan Wakely redi at gcc dot gnu.org 2011-07-14 10:51:57 UTC --- dup of PR 36231 ?
[Bug libstdc++/49745] error: ‘int truncate’ redeclared as different kind of symbol
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49745 --- Comment #3 from Jonathan Wakely redi at gcc dot gnu.org 2011-07-14 11:01:26 UTC --- the problem is actually in gthr-posix.h no libstdc++ header includes unistd.h except ext/stdio_syn_filebuf.h which is a non-standard extension and so that's not a problem
[Bug target/49746] Generated PA-RISC2.0w code cannot be assembled by GNU as-2.21.1
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49746 --- Comment #1 from H.Merijn Brand h.m.brand at xs4all dot nl 2011-07-14 11:09:18 UTC --- FYI I completed building gcc-4.6.1 with gcc (GCC) 4.2.4 GNU assembler (GNU Binutils) 2.18 gmp-5.0.2 mpfr-3.0.1 mpc-0.8.2 on HP-UX 11.23-ia64 and HP-UX 11.31-ia64 (both IPF/Itanium 2) without too much trouble using the generated gcc to build perl from scratch worked out fine for both 32bit (-milp32) and 64bit (-mlp64) configurations. The gcc builds are now available on my site http://mirrors.develooper.com/hpux/gcc.html
[Bug libstdc++/49745] error: ‘int truncate’ redeclared as different kind of symbol
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49745 --- Comment #4 from Jonathan Wakely redi at gcc dot gnu.org 2011-07-14 11:13:13 UTC --- Why does gthr-posix.h even include unistd.h? --- gcc/gthr-posix.h.orig 2011-07-14 11:09:00.148778460 + +++ gcc/gthr-posix.h2011-07-14 11:09:01.763786789 + @@ -39,7 +39,6 @@ #endif #include pthread.h -#include unistd.h typedef pthread_t __gthread_t; typedef pthread_key_t __gthread_key_t; The names from pthread.h will still be declared, but that's a LOT better than bringing in everything from unistd.h If some crufty OS needs unistd.h it should only be included conditionally
[Bug middle-end/49736] [4.7 Regression] Revision 176228 miscompiled 255.vortex in SPEC CPU 2000
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49736 --- Comment #2 from rsandifo at gcc dot gnu.org rsandifo at gcc dot gnu.org 2011-07-14 11:49:05 UTC --- Author: rsandifo Date: Thu Jul 14 11:49:01 2011 New Revision: 176270 URL: http://gcc.gnu.org/viewcvs?root=gccview=revrev=176270 Log: gcc/ PR middle-end/49736 * expr.c (all_zeros_p): Undo bogus part of last change. Modified: trunk/gcc/ChangeLog trunk/gcc/expr.c
[Bug tree-optimization/49724] [4.6/4.7 Regression] FAIL: gnat.dg/socket1.adb execution test
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49724 --- Comment #3 from dave.anglin at bell dot net 2011-07-14 11:54:32 UTC --- On 14-Jul-11, at 4:40 AM, ebotcazou at gcc dot gnu.org wrote: Can you confirm that this also comes from Martin's patch on the 4.6 branch? No, it doesn't come from Martin's change. Rather, it appears to come from a change to resolv.conf that I made last weekend. There was a problem with accessing on of NRC's nameservers and I changed the lookup order. It appears going back to previous configuration fixes things. Will recheck. Dave -- John David Anglindave.ang...@bell.net
[Bug ada/46350] s-taprop.adb:891:40: warning: redundant conversion, expression is of type Interrupt_ID
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=46350 --- Comment #5 from dave.anglin at bell dot net 2011-07-14 11:57:34 UTC --- On 14-Jul-11, at 4:44 AM, ebotcazou at gcc dot gnu.org wrote: Can you submit the patch if it works? It works. I will install later today after work if someone doesn't install it first. Dave -- John David Anglindave.ang...@bell.net
[Bug libstdc++/49745] error: ‘int truncate’ redeclared as different kind of symbol
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49745 Paolo Carlini paolo.carlini at oracle dot com changed: What|Removed |Added CC||rguenth at gcc dot gnu.org --- Comment #5 from Paolo Carlini paolo.carlini at oracle dot com 2011-07-14 12:01:40 UTC --- Who maintains gthr-posix.h? Indeed, in general, this is a well known issue, can be resolved as dup.
[Bug ada/49732] GNAT 4.6.[01] crashes on terminal_interface-curses-menus.adb from ncruses 5.9
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49732 --- Comment #2 from Vorfeed Canal vorfeed.canal at gmail dot com 2011-07-14 12:07:01 UTC --- Which compilation options? I'm not specifying anything strange and even if I use -O0 the result is the same: /localbuild/build/sysnative-prencurses-5.9/narrowc/Ada95/src$ gnatmake -O0 -P/ncplc/src/sysnative-prencurses-5.9/Ada95/src/library.gpr -XBUILD_DIR=`cd ..;pwd` -XSOURCE_DIR=`cd ..;pwd` -XSOURCE_DIR2=`cd /localbuild/src/sysnative-prencurses-5.9/Ada95/src;pwd` -XLIB_NAME=AdaCurses -XSONAME=libAdaCurses.so.1 -XLIB_KIND=static gcc -c -g -O2 -gnatafno -gnatVa -gnatwa -O0 -I- -gnatA /localbuild/src/sysnative-prencurses-5.9/Ada95/src/terminal_interface-curses-menus.adb raised STORAGE_ERROR : stack overflow (or erroneous memory access) GCC 4.4 works fine (I don't have GNAT 4.5 here to test)
[Bug libstdc++/49745] error: ‘int truncate’ redeclared as different kind of symbol
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49745 --- Comment #6 from Paolo Carlini paolo.carlini at oracle dot com 2011-07-14 12:07:45 UTC --- Before resolving as dup of 36231, let's add in CC Jakub too, it would be nice if for 4.7 we could finally take the plunge and follow Jon's suggestion, or a variant of it, but I don't know who normally fiddles with the gthr-* headers...
[Bug ada/49732] GNAT 4.6.[01] crashes on terminal_interface-curses-menus.adb from ncruses 5.9
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49732 --- Comment #3 from Eric Botcazou ebotcazou at gcc dot gnu.org 2011-07-14 12:12:35 UTC --- Which compilation options? -g -O2 -gnata -gnatf -gnatn -gnato -gnatVa It's usually more convenient to change them for a particular file in the project file than patching the source code directly.
[Bug libstdc++/49745] error: ‘int truncate’ redeclared as different kind of symbol
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49745 --- Comment #7 from Jonathan Wakely redi at gcc dot gnu.org 2011-07-14 12:13:27 UTC --- I don't think there is a maintainer for gthreads
[Bug tree-optimization/49651] [C++0x] nested lambdas and -O3 produced incorrect integer variable increments
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49651
Richard Guenther rguenth at gcc dot gnu.org changed:
What|Removed |Added
Status|NEW |ASSIGNED
AssignedTo|unassigned at gcc dot |rguenth at gcc dot gnu.org
|gnu.org |
--- Comment #8 from Richard Guenther rguenth at gcc dot gnu.org 2011-07-14
12:26:08 UTC ---
In the optimized dump I can see
bb 4:
...
run.__v7 = v7;
run.__a = a;
...
bb 6:
# ivtmp.207_17 = PHI ivtmp.207_68(10), ivtmp.207_69(5)
D.47092_58 = a;
D.47093_59 = D.47092_58 + 1;
a = D.47093_59;
f (D.47092_58);
bb 7:
D.47084_60 = MEM[(int * const )ve + 8];
D.47090._M_current = D.47084_60;
D.47083_61 = MEM[(int * const )ve];
D.47089._M_current = D.47083_61;
D.47091 = std::for_each__gnu_cxx::__normal_iteratorint*, std::vectorint
, main(int, char**)::lambda(int) (D.47089, D.47090, run);
bb 8:
D.47093_63 = D.47092_58 + 2;
a = D.47093_63;
f (D.47093_59);
bb 9:
D.47082_64 = MEM[(int * const )ve + 8];
D.47086._M_current = D.47082_64;
D.47081_65 = MEM[(int * const )ve];
D.47085._M_current = D.47081_65;
D.47087 = std::for_each__gnu_cxx::__normal_iteratorint*, std::vectorint
, main(int, char**)::lambda(int) (D.47085, D.47086, run);
bb 10:
ivtmp.207_68 = ivtmp.207_17 + 4;
__first$_M_current_66 = (int *) ivtmp.207_68;
if (__last_27 != __first$_M_current_66)
goto bb 6;
else
...
so we do CSE a over the std::for_each invocation which gets run as argument.
That's wrong of course. Alias-info tells us even that a is clobbered by
that call:
# USE = nonlocal null { aD.40068 viD.40071 D.40875 veD.40876 D.40877
v7D.40878 }
# CLB = nonlocal null { aD.40068 viD.40071 D.40875 veD.40876 D.40877
v7D.40878 }
D.47091 = std::for_each__gnu_cxx::__normal_iteratorint*, std::vectorint
, main(int, char**)::lambda(int) (D.47089, D.47090, runD.40880);
but it doesn't do so at the time when the first FRE is run:
# USE = nonlocal null { viD.40071 D.40875 veD.40876 D.40877 v7D.40878 }
# CLB = nonlocal null { viD.40071 D.40875 veD.40876 D.40877 v7D.40878 }
D.47091 = std::for_each__gnu_cxx::__normal_iteratorint*, std::vectorint
, main(int, char**)::lambda(int) (D.47089, D.47090,
*__f$__runD.47077_57);
the setup there is still not very optimized though.
[Bug libstdc++/49745] error: ‘int truncate’ redeclared as different kind of symbol
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49745 Paolo Carlini paolo.carlini at oracle dot com changed: What|Removed |Added CC||paolo.carlini at oracle dot ||com, ro at CeBiTec dot ||Uni-Bielefeld.DE --- Comment #8 from Paolo Carlini paolo.carlini at oracle dot com 2011-07-14 12:30:43 UTC --- Worst case we can regression test your simple change on Linux (and maybe another target normally using the Posix model, Rainer on Solaris?) and send it out to the mailing list for review. A global maintainer could approve it.
[Bug libstdc++/49745] error: ‘int truncate’ redeclared as different kind of symbol
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49745 --- Comment #9 from Jakub Jelinek jakub at gcc dot gnu.org 2011-07-14 12:33:16 UTC --- svn blame isn't hard to use. You'll find out that the unistd.h include was added by http://gcc.gnu.org/ml/gcc-patches/2002-10/msg01666.html There are still some of the unistd.h guard macros used in gthr*, so you can't just drop that. But, two of the three macros are limited to libobjc (the scheduling stuff), so if it wasn't for _POSIX_TIMEOUTS for __gthread_mutex_timedwait, you could guard the unistd.h include with #if defined(_LIBOBJC) || defined(_LIBOBJC_WEAK) Unfortunately, the remaining one, _POSIX_TIMEOUTS and defining __gthread_mutex_timedlock if it is present, is used in libstdc++ (mutex in particular, and apparently unconditionally there, so it will just not compile on prehistoric OSes which lack pthread_mutex_timedlock or on systems that don't use gthr-posix.h but other gthr-*.h headers instead). So, if you want to avoid including unistd.h, you'd need to e.g. add some configure test in libstdc++ and in gthr-posix.h use #if defined(_LIBOBJC) || defined(_LIBOBJC_WEAK) \ || !defined(_GTHR_HAS_POSIX_TIMEOUTS) #include unistd.h #ifdef _POSIX_TIMEOUTS #define _GTHR_HAS_POSIX_TIMEOUTS _POSIX_TIMEOUTS #endif #endif and use _GTHR_HAS_POSIX_TIMEOUTS instead of _POSIX_TIMEOUTS in gthr.h and arrange for libstdc++ headers to define _GTHR_HAS_POSIX_TIMEOUTS based on whether unistd.h defines _POSIX_TIMEOUTS.
[Bug libstdc++/49745] error: ‘int truncate’ redeclared as different kind of symbol
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49745 --- Comment #10 from Jakub Jelinek jakub at gcc dot gnu.org 2011-07-14 12:34:32 UTC --- BTW, mutex really shouldn't be using __gthread_mutex_timedlock if it isn't available...
[Bug tree-optimization/49651] [C++0x] nested lambdas and -O3 produced incorrect integer variable increments
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49651
--- Comment #9 from Richard Guenther rguenth at gcc dot gnu.org 2011-07-14
12:36:23 UTC ---
C testcase that fails at -O2:
extern void abort (void);
struct X {
int *p;
int *q;
};
void __attribute__((noinline, noclone))
foo (struct X x) { *x.q = 0; }
volatile int what;
struct X y;
int main()
{
int i, j;
struct X x, *p;
x.p = i;
x.q = j;
if (what)
p = y;
else
p = x;
j = 1;
foo (*p);
if (j != 0)
abort ();
return 0;
}
workaround: --param max-fields-for-field-sensitive=1
[Bug libstdc++/49745] error: ‘int truncate’ redeclared as different kind of symbol
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49745 --- Comment #11 from Paolo Carlini paolo.carlini at oracle dot com 2011-07-14 12:43:53 UTC --- Thanks Jakub. Thus, seems a little more difficult than we hoped, but still doable. We'll give a try to your scheme.
[Bug tree-optimization/49651] [4.4/4.5/4.6/4.7 Regression] nested lambdas and -O3 produced incorrect integer variable increments
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49651 Richard Guenther rguenth at gcc dot gnu.org changed: What|Removed |Added Known to work|4.7.0 |4.3.6 Target Milestone|--- |4.4.7 Summary|[C++0x] nested lambdas and |[4.4/4.5/4.6/4.7 |-O3 produced incorrect |Regression] nested lambdas |integer variable increments |and -O3 produced incorrect ||integer variable increments Known to fail||4.4.6, 4.5.3, 4.7.0 --- Comment #10 from Richard Guenther rguenth at gcc dot gnu.org 2011-07-14 13:02:11 UTC --- I have a patch.
[Bug ada/49732] GNAT 4.6.[01] crashes on terminal_interface-curses-menus.adb from ncruses 5.9
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49732 --- Comment #4 from Vorfeed Canal vorfeed.canal at gmail dot com 2011-07-14 13:22:31 UTC --- Ah, I see. Well, it looks it's -gnatafno option which triggers the error. And I have no idea what it's supposed to do :-( /localbuild/build/sysnative-prencurses-5.9/narrowc/Ada95/src$ PATH=/sysnative/bin:$PATH gnatmake -f -P/localbuild/src/sysnative-prencurses-5.9/Ada95/src/library.gpr -XBUILD_DIR=`cd ..;pwd` -XSOURCE_DIR=`cd ..;pwd` -XSOURCE_DIR2=`cd /localbuild/src/sysnative-prencurses-5.9/Ada95/src;pwd` -XLIB_NAME=AdaCurses -XSONAME=libAdaCurses.so.1 -XLIB_KIND=static gcc -c -O0 -gnatafno -I- -gnatA /localbuild/build/sysnative-prencurses-5.9/narrowc/Ada95/src/terminal_interface-curses-trace.adb gcc -c -O0 -gnatafno -I- -gnatA /localbuild/src/sysnative-prencurses-5.9/Ada95/src/terminal_interface-curses-text_io-fixed_io.adb gcc -c -O0 -gnatafno -I- -gnatA /localbuild/src/sysnative-prencurses-5.9/Ada95/src/terminal_interface-curses-termcap.adb gcc -c -O0 -gnatafno -I- -gnatA /localbuild/src/sysnative-prencurses-5.9/Ada95/src/terminal_interface-curses-forms-field_types-alpha.adb gcc -c -O0 -gnatafno -I- -gnatA /localbuild/src/sysnative-prencurses-5.9/Ada95/src/terminal_interface-curses-text_io-integer_io.adb gcc -c -O0 -gnatafno -I- -gnatA /localbuild/src/sysnative-prencurses-5.9/Ada95/src/terminal_interface-curses-forms-field_types-enumeration-ada.adb gcc -c -O0 -gnatafno -I- -gnatA /localbuild/src/sysnative-prencurses-5.9/Ada95/src/terminal_interface-curses-text_io-enumeration_io.adb gcc -c -O0 -gnatafno -I- -gnatA /localbuild/src/sysnative-prencurses-5.9/Ada95/src/terminal_interface-curses-menus.adb raised STORAGE_ERROR : stack overflow (or erroneous memory access) gnatmake: /localbuild/src/sysnative-prencurses-5.9/Ada95/src/terminal_interface-curses-menus.adb compilation error
[Bug driver/49747] New: warning:dereferencing type-punned pointer will break strict-aliasing rules
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49747 Summary: warning:dereferencing type-punned pointer will break strict-aliasing rules Product: gcc Version: 4.4.5 Status: UNCONFIRMED Severity: major Priority: P3 Component: driver AssignedTo: unassig...@gcc.gnu.org ReportedBy: douga...@gru.com After emerging sys-devel/gcc-4.4.5 on Gentoo Linux kernel-2.6.38-gentoo-r6 I am getting this: Completed installing gcc-4.4.5 into /var/tmp/portage/sys-devel/gcc-4.4.5/image/ ecompressdir: bzip2 -9 /usr/share/gcc-data/i686-pc-linux-gnu/4.4.5/man ecompressdir: bzip2 -9 /usr/share/gcc-data/i686-pc-linux-gnu/4.4.5/info * QA Notice: Package has poor programming practices which may compile *fine but exhibit random runtime failures. * /var/tmp/portage/sys-devel/gcc-4.4.5/work/gcc-4.4.5/libgcc/../gcc/unwind-dw2-fde.c:321: warning: dereferencing type-punned pointer will break strict-aliasing rules * /var/tmp/portage/sys-devel/gcc-4.4.5/work/gcc-4.4.5/libgcc/../gcc/unwind-dw2-fde.c:322: warning: dereferencing type-punned pointer will break strict-aliasing rules * /var/tmp/portage/sys-devel/gcc-4.4.5/work/gcc-4.4.5/libgcc/../gcc/unwind-dw2-fde.c:677: warning: dereferencing type-punned pointer will break strict-aliasing rules * /var/tmp/portage/sys-devel/gcc-4.4.5/work/gcc-4.4.5/libgcc/../gcc/unwind-dw2-fde.c:795: warning: dereferencing type-punned pointer will break strict-aliasing rules * /var/tmp/portage/sys-devel/gcc-4.4.5/work/gcc-4.4.5/libgcc/../gcc/unwind-dw2-fde.c:843: warning: dereferencing type-punned pointer will break strict-aliasing rules * /var/tmp/portage/sys-devel/gcc-4.4.5/work/gcc-4.4.5/libgcc/../gcc/unwind-dw2-fde.c:321: warning: dereferencing type-punned pointer will break strict-aliasing rules * /var/tmp/portage/sys-devel/gcc-4.4.5/work/gcc-4.4.5/libgcc/../gcc/unwind-dw2-fde.c:322: warning: dereferencing type-punned pointer will break strict-aliasing rules * /var/tmp/portage/sys-devel/gcc-4.4.5/work/gcc-4.4.5/libgcc/../gcc/unwind-dw2-fde.c:677: warning: dereferencing type-punned pointer will break strict-aliasing rules * /var/tmp/portage/sys-devel/gcc-4.4.5/work/gcc-4.4.5/libgcc/../gcc/unwind-dw2-fde.c:795: warning: dereferencing type-punned pointer will break strict-aliasing rules * /var/tmp/portage/sys-devel/gcc-4.4.5/work/gcc-4.4.5/libgcc/../gcc/unwind-dw2-fde.c:843: warning: dereferencing type-punned pointer will break strict-aliasing rules * /var/tmp/portage/sys-devel/gcc-4.4.5/work/gcc-4.4.5/libgcc/../gcc/unwind-dw2-fde.c:321: warning: dereferencing type-punned pointer will break strict-aliasing rules * /var/tmp/portage/sys-devel/gcc-4.4.5/work/gcc-4.4.5/libgcc/../gcc/unwind-dw2-fde.c:322: warning: dereferencing type-punned pointer will break strict-aliasing rules * /var/tmp/portage/sys-devel/gcc-4.4.5/work/gcc-4.4.5/libgcc/../gcc/unwind-dw2-fde.c:677: warning: dereferencing type-punned pointer will break strict-aliasing rules * /var/tmp/portage/sys-devel/gcc-4.4.5/work/gcc-4.4.5/libgcc/../gcc/unwind-dw2-fde.c:795: warning: dereferencing type-punned pointer will break strict-aliasing rules * /var/tmp/portage/sys-devel/gcc-4.4.5/work/gcc-4.4.5/libgcc/../gcc/unwind-dw2-fde.c:843: warning: dereferencing type-punned pointer will break strict-aliasing rules * /var/tmp/portage/sys-devel/gcc-4.4.5/work/gcc-4.4.5/libgcc/../gcc/unwind-dw2-fde.c:321: warning: dereferencing type-punned pointer will break strict-aliasing rules * /var/tmp/portage/sys-devel/gcc-4.4.5/work/gcc-4.4.5/libgcc/../gcc/unwind-dw2-fde.c:322: warning: dereferencing type-punned pointer will break strict-aliasing rules * /var/tmp/portage/sys-devel/gcc-4.4.5/work/gcc-4.4.5/libgcc/../gcc/unwind-dw2-fde.c:677: warning: dereferencing type-punned pointer will break strict-aliasing rules * /var/tmp/portage/sys-devel/gcc-4.4.5/work/gcc-4.4.5/libgcc/../gcc/unwind-dw2-fde.c:795: warning: dereferencing type-punned pointer will break strict-aliasing rules * /var/tmp/portage/sys-devel/gcc-4.4.5/work/gcc-4.4.5/libgcc/../gcc/unwind-dw2-fde.c:843: warning: dereferencing type-punned pointer will break strict-aliasing rules * /var/tmp/portage/sys-devel/gcc-4.4.5/work/gcc-4.4.5/libgcc/../gcc/unwind-dw2-fde.c:321: warning: dereferencing type-punned pointer will break strict-aliasing rules * /var/tmp/portage/sys-devel/gcc-4.4.5/work/gcc-4.4.5/libgcc/../gcc/unwind-dw2-fde.c:322: warning: dereferencing type-punned pointer will break strict-aliasing rules * /var/tmp/portage/sys-devel/gcc-4.4.5/work/gcc-4.4.5/libgcc/../gcc/unwind-dw2-fde.c:677: warning: dereferencing type-punned pointer will break strict-aliasing rules * /var/tmp/portage/sys-devel/gcc-4.4.5/work/gcc-4.4.5/libgcc/../gcc/unwind-dw2-fde.c:795: warning: dereferencing type-punned pointer will break strict-aliasing rules *
[Bug ada/49732] GNAT 4.6.[01] crashes on terminal_interface-curses-menus.adb from ncruses 5.9
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49732 --- Comment #5 from Eric Botcazou ebotcazou at gcc dot gnu.org 2011-07-14 13:33:41 UTC --- Ah, I see. Well, it looks it's -gnatafno option which triggers the error. -gnatafno is -gnata -gnatf -gnatn -gnato. Can you further narrow it down?
[Bug ada/49732] GNAT 4.6.[01] crashes on terminal_interface-curses-menus.adb from ncruses 5.9
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49732 --- Comment #6 from Vorfeed Canal vorfeed.canal at gmail dot com 2011-07-14 13:52:07 UTC --- Ah-ha. Here we go: gcc -c -O0 -gnato -I- -gnatA /ncplc/src/sysnative-prencurses-5.9/Ada95/src/terminal_interface-curses-menus.adb raised STORAGE_ERROR : stack overflow (or erroneous memory access) Make sense, I guess.
[Bug ada/49732] GNAT 4.6.[01] crashes on terminal_interface-curses-menus.adb from ncruses 5.9
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49732 Eric Botcazou ebotcazou at gcc dot gnu.org changed: What|Removed |Added Status|WAITING |ASSIGNED AssignedTo|unassigned at gcc dot |ebotcazou at gcc dot |gnu.org |gnu.org --- Comment #7 from Eric Botcazou ebotcazou at gcc dot gnu.org 2011-07-14 14:02:57 UTC --- gcc -c -O0 -gnato -I- -gnatA /ncplc/src/sysnative-prencurses-5.9/Ada95/src/terminal_interface-curses-menus.adb raised STORAGE_ERROR : stack overflow (or erroneous memory access) Make sense, I guess. Sort of. :-) This doesn't really ring a bell, so I'll investigate.
[Bug ada/49732] [4.6/4.7 regression] crash on terminal_interface-curses-menus.adb from ncurses with -gnato
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49732 Eric Botcazou ebotcazou at gcc dot gnu.org changed: What|Removed |Added Keywords||ice-on-valid-code Known to work||4.4.6 Target Milestone|--- |4.6.2 Summary|GNAT 4.6.[01] crashes on|[4.6/4.7 regression] crash |terminal_interface-curses-m |on |enus.adb from ncruses 5.9 |terminal_interface-curses-m ||enus.adb from ncurses with ||-gnato Known to fail||4.6.0, 4.6.1
[Bug ada/49732] [4.6/4.7 regression] crash on terminal_interface-curses-menus.adb from ncurses with -gnato
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49732 --- Comment #8 from Vorfeed Canal vorfeed.canal at gmail dot com 2011-07-14 14:43:49 UTC --- It makes sense because patch which fixes the problem effectively removes the information needed to do overflow check. And now, when I know where to look is much smaller reproducer: $ cat hello.adb with Interfaces.C; use Interfaces.C; with Interfaces.C.Strings; use Interfaces.C.Strings; with Interfaces.C.Pointers; procedure Hello is function Create (Name: String) return size_t is type Name_String is new char_array (0 .. Name'Length); type Name_String_Ptr is access Name_String; pragma Controlled (Name_String_Ptr); Name_Str : constant Name_String_Ptr := new Name_String; Name_Len : size_t; begin To_C (Name, Name_Str.all, Name_Len); return 1; end Create; Test : size_t; begin Test := Create(ABC); end Hello; $ gnatmake -O0 -gnato hello.adb gcc -c -O0 -gnato hello.adb raised STORAGE_ERROR : stack overflow (or erroneous memory access) gnatmake: hello.adb compilation error
[Bug driver/49747] warning:dereferencing type-punned pointer will break strict-aliasing rules
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49747 --- Comment #1 from Jonathan Wakely redi at gcc dot gnu.org 2011-07-14 14:49:53 UTC --- (In reply to comment #0) After emerging sys-devel/gcc-4.4.5 on Gentoo Linux kernel-2.6.38-gentoo-r6 What does this mean? Not everyone uses gentoo or wants to understand its pkg system. I assume you're building gcc-4.4.5 with a newer gcc? Completed installing gcc-4.4.5 into /var/tmp/portage/sys-devel/gcc-4.4.5/image/ ecompressdir: bzip2 -9 /usr/share/gcc-data/i686-pc-linux-gnu/4.4.5/man ecompressdir: bzip2 -9 /usr/share/gcc-data/i686-pc-linux-gnu/4.4.5/info * QA Notice: Package has poor programming practices which may compile *fine but exhibit random runtime failures. * /var/tmp/portage/sys-devel/gcc-4.4.5/work/gcc-4.4.5/libgcc/../gcc/unwind-dw2-fde.c:321: warning: dereferencing type-punned pointer will break strict-aliasing rules * That code has already changed to avoid those warnings: http://gcc.gnu.org/viewcvs?view=revisionrevision=147705 So I think this is FIXED
[Bug tree-optimization/49651] [4.4/4.5/4.6/4.7 Regression] nested lambdas and -O3 produced incorrect integer variable increments
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49651 --- Comment #11 from Richard Guenther rguenth at gcc dot gnu.org 2011-07-14 14:53:33 UTC --- Author: rguenth Date: Thu Jul 14 14:53:30 2011 New Revision: 176274 URL: http://gcc.gnu.org/viewcvs?root=gccview=revrev=176274 Log: 2011-07-14 Richard Guenther rguent...@suse.de PR tree-optimization/49651 * tree-ssa-structalias.c (get_constraint_for_1): Properly handle dereferences with subvariables. * gcc.dg/torture/pr49651.c: New testcase. Added: trunk/gcc/testsuite/gcc.dg/torture/pr49651.c Modified: trunk/gcc/ChangeLog trunk/gcc/testsuite/ChangeLog trunk/gcc/tree-ssa-structalias.c
[Bug tree-optimization/49651] [4.4/4.5/4.6/4.7 Regression] nested lambdas and -O3 produced incorrect integer variable increments
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49651 --- Comment #12 from Richard Guenther rguenth at gcc dot gnu.org 2011-07-14 14:56:30 UTC --- Author: rguenth Date: Thu Jul 14 14:56:27 2011 New Revision: 176275 URL: http://gcc.gnu.org/viewcvs?root=gccview=revrev=176275 Log: 2011-07-14 Richard Guenther rguent...@suse.de PR tree-optimization/49651 * tree-ssa-structalias.c (get_constraint_for_1): Properly handle dereferences with subvariables. * gcc.dg/torture/pr49651.c: New testcase. Added: branches/gcc-4_6-branch/gcc/testsuite/gcc.dg/torture/pr49651.c Modified: branches/gcc-4_6-branch/gcc/ChangeLog branches/gcc-4_6-branch/gcc/testsuite/ChangeLog branches/gcc-4_6-branch/gcc/tree-ssa-structalias.c
[Bug ada/49732] [4.6/4.7 regression] crash on terminal_interface-curses-menus.adb from ncurses with -gnato
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49732 Eric Botcazou ebotcazou at gcc dot gnu.org changed: What|Removed |Added Known to work||4.5.4 Known to fail||4.7.0 --- Comment #9 from Eric Botcazou ebotcazou at gcc dot gnu.org 2011-07-14 14:56:54 UTC --- It makes sense because patch which fixes the problem effectively removes the information needed to do overflow check. OK. And now, when I know where to look is much smaller reproducer: Nice, thanks. The 4.5 series isn't affected either.
[Bug driver/49747] warning:dereferencing type-punned pointer will break strict-aliasing rules
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49747 --- Comment #2 from douganla at gru dot com 2011-07-14 14:57:47 UTC --- gcc-4.4.5 is the latest version available in gentoo
[Bug tree-optimization/49651] [4.4/4.5 Regression] nested lambdas and -O3 produced incorrect integer variable increments
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49651 Richard Guenther rguenth at gcc dot gnu.org changed: What|Removed |Added Known to work||4.6.2, 4.7.0 Summary|[4.4/4.5/4.6/4.7|[4.4/4.5 Regression] nested |Regression] nested lambdas |lambdas and -O3 produced |and -O3 produced incorrect |incorrect integer variable |integer variable increments |increments Known to fail|4.6.2, 4.7.0|4.6.1 --- Comment #13 from Richard Guenther rguenth at gcc dot gnu.org 2011-07-14 15:00:45 UTC --- Fixed for 4.6.2 and trunk sofar.
[Bug target/49487] Internal compiler error in AVR code (bytewise rotate)
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49487 --- Comment #5 from Georg-Johann Lay gjl at gcc dot gnu.org 2011-07-14 15:10:17 UTC --- Author: gjl Date: Thu Jul 14 15:10:12 2011 New Revision: 176276 URL: http://gcc.gnu.org/viewcvs?root=gccview=revrev=176276 Log: PR target/49487 * config/avr/avr.md (rotlmode3): Generate SCRATCH instead of REG. (*rotwmode): Use const_int_operand for operand2. Use match_scatch for operand3. (*rotbmode): Ditto * config/avr/avr.c (avr_rotate_bytes): Treat SCRATCH. Modified: trunk/gcc/ChangeLog trunk/gcc/config/avr/avr.c trunk/gcc/config/avr/avr.md
[Bug target/49487] Internal compiler error in AVR code (bytewise rotate)
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49487 --- Comment #6 from Georg-Johann Lay gjl at gcc dot gnu.org 2011-07-14 15:15:31 UTC --- Author: gjl Date: Thu Jul 14 15:15:28 2011 New Revision: 176277 URL: http://gcc.gnu.org/viewcvs?root=gccview=revrev=176277 Log: PR target/49487 Backport from mainline r176276 2011-07-14 Georg-Johann Lay * config/avr/avr.md (rotlmode3): Generate SCRATCH instead of REG. (*rotwmode): Use const_int_operand for operand2. Use match_scatch for operand3. (*rotbmode): Ditto * config/avr/avr.c (avr_rotate_bytes): Treat SCRATCH. Modified: branches/gcc-4_6-branch/gcc/ChangeLog branches/gcc-4_6-branch/gcc/config/avr/avr.c branches/gcc-4_6-branch/gcc/config/avr/avr.md
[Bug target/49487] Internal compiler error in AVR code (bytewise rotate)
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49487 Georg-Johann Lay gjl at gcc dot gnu.org changed: What|Removed |Added Status|NEW |RESOLVED Resolution||FIXED --- Comment #7 from Georg-Johann Lay gjl at gcc dot gnu.org 2011-07-14 15:18:04 UTC --- Closed as FIXED for the Milestone.
[Bug target/44506] -mtiny-stack causes internal compiler error on gcc for avr
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=44506 Georg-Johann Lay gjl at gcc dot gnu.org changed: What|Removed |Added CC||gjl at gcc dot gnu.org Known to work||4.6.2, 4.7.0 --- Comment #1 from Georg-Johann Lay gjl at gcc dot gnu.org 2011-07-14 15:54:01 UTC --- I cannot reproduce it with 4.6+. Maybe it's already fixed by r175048. http://gcc.gnu.org/viewcvs?view=revisionrevision=175048
[Bug c++/41426] User defined conversion on return ignores array types
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=41426
Ville Voutilainen ville.voutilainen at gmail dot com changed:
What|Removed |Added
CC||ville.voutilainen at gmail
||dot com
--- Comment #1 from Ville Voutilainen ville.voutilainen at gmail dot com
2011-07-14 16:04:11 UTC ---
gcc 4.7 (trunk) still behaves this way. An example snippet
was provided for me:
struct v
{
templateunsigned N
v( const char()[N] ){}
};
v foo( )
{
return Hello WOrld; // #1
}
int main ( )
{
v x(hello world); // #2
}
in that snippet, #1 is rejected with
error: could not convert ‘(const char*)Hello WOrld’ from ‘const char*’ to ‘v’
Explicit construction of v in foo() works.
[Bug c/49748] New: char * const * cannot be assigned to char const * const *
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49748
Summary: char * const * cannot be assigned to char const *
const *
Product: gcc
Version: 4.4.3
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c
AssignedTo: unassig...@gcc.gnu.org
ReportedBy: g...@misc.lka.org.lu
Trying to assign a pointer value A with type char * const * into a variable B
declared as char const * const * triggers a warning, although the
const-yness of the type is _increased_ not decreased.
Such a thing may be needed when trying to call a function that displays a list
of strings:
void displayList(char const * const * list)
{
/* display list */
}
The char const * declaration is needed if somewhere in the program, this
function is called with an array of static strings:
char const *list1[] = { hello, world, NULL };
displayList(list1);
However, if elsewhere in the program, we want to call the function with a list
of _dynamically_ allocated strings, we get a initialization from incompatible
pointer type warning:
char **list2;
for(i=0; i N; i++)
list2[i] = strdup( some expression );
...
displayList(list2);
for(i=0; iN; i++)
free(list2[i]);
Because of the free(), we cannot declare list2[] as char const ** , but then
this restriction on _adding_ the const qualifier during assignment or parameter
passing is causing trouble.
There is a very similar case, where such a restriction on adding a const
qualifier makes sense:
assiging char ** to char const **
(i.e. the case where in the target, only the string _contents_ are const, but
not the string pointers themselves).
In this case, the assignment warning would be appropriate, in order to prevent
the following:
char *launderConst(char const *in)
{
char * source[1];
char const ** target = source;
target[0] = in;
return source[0];
}
However if the target list itself is const (rather than just its string
contents), we would never be able to do this:
char const *const* target = source;
target[0] = in;
So why the warning about the first line, if the second one is forbidden anyways
(assigning a value to a const)?
Or is there another way of declaring the displayList() function without
triggering a warning in any of both use-cases?
[Bug c/49748] char * const * cannot be assigned to char const * const *
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49748 --- Comment #1 from Jonathan Wakely redi at gcc dot gnu.org 2011-07-14 16:44:08 UTC --- the bug reporting guidelines clearly ask for a complete and self-contained test case, not several snippets of code which don't form a complete program http://gcc.gnu.org/bugs/ the warning is correct, see http://c-faq.com/ansi/constmismatch.html
[Bug target/44506] -mtiny-stack causes internal compiler error on gcc for avr
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=44506 Eric Weddington eric.weddington at atmel dot com changed: What|Removed |Added Status|UNCONFIRMED |RESOLVED Resolution||WORKSFORME Target Milestone|--- |4.6.1 --- Comment #2 from Eric Weddington eric.weddington at atmel dot com 2011-07-14 16:45:15 UTC --- (In reply to comment #1) I cannot reproduce it with 4.6+. Maybe it's already fixed by r175048. http://gcc.gnu.org/viewcvs?view=revisionrevision=175048 Closing as WORKSFORME. Set milestone to 4.6.1 since revision 175048 is included in that release.
[Bug tree-optimization/49749] New: Reassociation rank algorithm does not include all non-NULL operands
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49749
Summary: Reassociation rank algorithm does not include all
non-NULL operands
Product: gcc
Version: 4.7.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: tree-optimization
AssignedTo: unassig...@gcc.gnu.org
ReportedBy: wschm...@gcc.gnu.org
CC: d...@gcc.gnu.org, richard.guent...@gmail.com,
berg...@gcc.gnu.org, pthau...@gcc.gnu.org,
meiss...@gcc.gnu.org
Host: powerpc64-linux
Target: powerpc64-linux
Build: powerpc64-linux
Created attachment 24754
-- http://gcc.gnu.org/bugzilla/attachment.cgi?id=24754
Excerpt from bwaves showing the problem on r161839 and before
tree-ssa-reassoc.c: get_rank () contains the following code:
/* Otherwise, find the maximum rank for the operands, or the bb
rank, whichever is less. */
rank = 0;
maxrank = bb_rank[gimple_bb(stmt)-index];
if (gimple_assign_single_p (stmt))
{
tree rhs = gimple_assign_rhs1 (stmt);
n = TREE_OPERAND_LENGTH (rhs);
if (n == 0)
rank = MAX (rank, get_rank (rhs));
else
{
for (i = 0;
i n TREE_OPERAND (rhs, i) rank != maxrank; i++)
rank = MAX(rank, get_rank (TREE_OPERAND (rhs, i)));
}
}
else
{
n = gimple_num_ops (stmt);
for (i = 1; i n rank != maxrank; i++)
{
gcc_assert (gimple_op (stmt, i));
rank = MAX(rank, get_rank (gimple_op (stmt, i)));
}
}
The loop condition:
i n TREE_OPERAND (rhs, i) rank != maxrank; i++)
erroneously stops processing operands as soon as a NULL operand is detected.
As an example, a TARGET_MEM_REF without a symbol operand (operand 0) will be
assigned a rank of zero by that loop.
The condition rank != maxrank in both loops seems to indicate that an
expression should never get a rank larger than its block rank. I am seeing
cases where the rank is slightly larger; for example, a block rank of 1638400
and an operand rank of 1638404. If the intent is to limit the value to 1638400
in such a case, this also needs to be fixed.
The existence of this bug has contributed in an odd way to a degradation of the
CPU2006 bwaves benchmark on powerpc64 (affected procedure attached). In trunk
revision 161840 (7/5/2010), Richard Guenther changed the ivopts code to
generate MEM_REFs in preference to TARGET_MEM_REFs. Prior to this change, SSA
names from assignments to TARGET_MEM_REFs were given a rank of 1. Following
this change, SSA names from assignments to MEM_REFs were given a rank of
1638404 (for example), while SSA names from PHI assignments in the same block
were given a rank of 1638400. Thus, prior to this change, PHI assignments had
higher rank than memory references in the same block, but after this change,
they had lower rank.
Giving preference to the PHI expressions over the memory references provided
better reassociation for the bwaves example. In particular, prior to 161840 a
prephitmp was reassociated so that copyrename could generate something like
prephitmp.160_552 = D.1095_522 + prephitmp.160_161;
thus making prephitmp.160 independent of other calculations in the loop
iteration. When the PHI expression was given lowest rank, this did not occur,
causing prephitmp.160 to be dependent upon the result of the previous loop
iteration's calculations.
For powerpc64, we unroll the loop by a factor of 2. When the two iterations
are independent, FMAs from the two iterations can be interleaved leading to
good performance. When the two iterations are not independent, we end up with
a stack of linearly dependent FMAs at the end of the loop that chokes the
floating-point unit.
This leads to the question of whether PHIs at the top of a block should
generally be given preference over memory references in the interior of that
block. It may be that if the PHIs and the memory references have the same
rank, this is exactly what will happen. That might just be serendipity,
though; thoughts?
I will be experimenting with capping the rank of an expression at the rank of
the containing block, and including all operands in the ranking. But I am very
interested in thoughts on this problem from those who are familiar with the
reassociator.
Please let me know if you would like further materials to examine.
The bug goes back a long way; the degradation affects us on 4.6 and 4.7.
[Bug target/49541] [4.6/4.7 regression] TLS support partially broken in 64-bit mode
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49541 --- Comment #8 from ro at CeBiTec dot Uni-Bielefeld.DE ro at CeBiTec dot Uni-Bielefeld.DE 2011-07-14 17:08:09 UTC --- Same here, but the link line starts with: /nile.build/botcazou/gcc-head/sparc-sun-solaris2.8/gcc/collect2 -V -Y P,/lib/sparcv9:/usr/lib/sparcv9 -Qy -o ./condinc2.exe and this apparently overrides it. Not even that: the libgomp.so RUNPATH is completely ignored by ld, but only evaluated at runtime by ld.so.1. The problem is that the testsuite (lib/libgomp.exp) unconditionally links with -lgomp even for the -fno-openmp testcases. I'd argue that this is a testsuite-only problem (pilot error, actually) and can be worked around by use of dg-add-options tls. Rainer
[Bug rtl-optimization/11320] [3.3 regression] Scheduler bug
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=11320 --- Comment #10 from Bernd Schmidt bernds at gcc dot gnu.org 2011-07-14 17:06:38 UTC --- Author: bernds Date: Thu Jul 14 17:06:33 2011 New Revision: 176280 URL: http://gcc.gnu.org/viewcvs?root=gccview=revrev=176280 Log: PR rtl-optimization/11320 * config/ia64/ia64.md (load_symptr_low): Show a MEM. * config/ia64/ia64.c (ia64_expand_load_address): Generate it. Modified: trunk/gcc/ChangeLog trunk/gcc/config/ia64/ia64.c trunk/gcc/config/ia64/ia64.md
[Bug target/38159] [avr] ICE: gcc.c-torture/execute/pr38051.c compilation, -O3 -fomit-frame-pointer -funroll-all-loops -finline-functions
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=38159 Eric Weddington eric.weddington at atmel dot com changed: What|Removed |Added Status|UNCONFIRMED |NEW Last reconfirmed||2011.07.14 17:15:35 CC||gjl at gcc dot gnu.org Known to work||4.6.2 Ever Confirmed|0 |1 Known to fail||4.4.0, 4.7.0 --- Comment #3 from Eric Weddington eric.weddington at atmel dot com 2011-07-14 17:15:35 UTC --- Odd, this does not show up as a failure in latest 4.6.2 test results: http://gcc.gnu.org/ml/gcc-testresults/2011-07/msg01528.html But, it does show up as a failure in the latest 4.7.0 test results: http://gcc.gnu.org/ml/gcc-testresults/2011-07/msg01530.html There it fails for -O[23s] (plus various flags). The error is triggered even if -finline-functions is not specified.
[Bug tree-optimization/49452] [4.7 regression] comp-goto-2.c regresses in testing
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49452 --- Comment #12 from Easwaran Raman eraman at google dot com 2011-07-14 17:16:06 UTC --- (In reply to comment #11) I have confirmed that the -Os failures began with r175063 and that the tests pass for several revision before that and pass for several after, so it's unlikely to be an intermittent failure. If it would help I can send dump files for r175063 and the one just before that. It is possible that the second DSE invocation deletes a necessary store. My understanding was that it only acts on spilled stores and all my changes are in the _nospill version, but that seems not to be the case. Could you send me all the RTL dumps with and without this patch as a tar file? That will be very useful in narrowing it down. Thanks, Easwaran
[Bug other/49665] 'defined in discarded section' link failures on cpu2006 benchmarks
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49665 Pat Haugen pthaugen at gcc dot gnu.org changed: What|Removed |Added CC||hubicka at gcc dot gnu.org --- Comment #7 from Pat Haugen pthaugen at gcc dot gnu.org 2011-07-14 17:19:10 UTC --- Yes, if I remove the patch for r174989 then both benchmarks build without error.
[Bug target/38159] [avr] ICE: gcc.c-torture/execute/pr38051.c compilation, -O3 -fomit-frame-pointer -funroll-all-loops -finline-functions
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=38159 --- Comment #4 from Georg-Johann Lay gjl at gcc dot gnu.org 2011-07-14 17:28:07 UTC --- Must be new artifact, r176217 fails and my local 176136 passes.
[Bug target/49541] [4.6/4.7 regression] TLS support partially broken in 64-bit mode
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49541 --- Comment #9 from Rainer Orth ro at gcc dot gnu.org 2011-07-14 17:37:43 UTC --- Created attachment 24755 -- http://gcc.gnu.org/bugzilla/attachment.cgi?id=24755 proposed 4.6 patch Here's the 4.6 backport of the sol2.h patch. Could you please give it a try on Solaris 8 on bare metal? I've bootstrapped it without regressions on sparc-sun-solaris2.8 and i386-pc-solaris2.8. Thanks. Rainer
[Bug c/49748] char * const * cannot be assigned to char const * const *
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49748 --- Comment #2 from Alain Knaff gcc at misc dot lka.org.lu 2011-07-14 17:38:59 UTC --- Created attachment 24756 -- http://gcc.gnu.org/bugzilla/attachment.cgi?id=24756 Test program for const warning bug the warning is correct, see http://c-faq.com/ansi/constmismatch.html Thanks for this link. This does indeed confirm what I said, in much less words than I needed. Moreover, it points out that the issue doesn't exist in C++. However, it doesn't explain why the issue still present in C. Any insights into this question? If this is just to keep some paper-pushers happy, maybe we could keep the current behavior as the default, but have a -W flag to make gcc mimic g++'s behavior?
[Bug target/49541] [4.6/4.7 regression] TLS support partially broken in 64-bit mode
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49541 --- Comment #10 from Rainer Orth ro at gcc dot gnu.org 2011-07-14 17:40:06 UTC --- Created attachment 24757 -- http://gcc.gnu.org/bugzilla/attachment.cgi?id=24757 proposed libgomp testsuite patch Here's the libgomp testsuite part of the patch. It should apply to both mainline and 4.6 branch. I've lightly tested the approach by checking one of the testcases on sparc-sun-solaris2.8, but on Solaris 8 bare metal the libgomp testsuite should now be failure free. Thanks. Rainer
[Bug tree-optimization/49735] [4.7 Regression] mips64-elf libgcc build fails with apparently infinite recursion.
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49735 --- Comment #6 from Andrew Pinski pinskia at gcc dot gnu.org 2011-07-14 18:26:54 UTC --- (In reply to comment #5) It probably papers over a different issue though - even recursive inlining should be limited by a --param, but appearantly that is not working here. Honza? Oh it is working, just since this is a simple wrapper function (infinite loop kinda) it is inlinining a lot.
[Bug middle-end/49491] Superfluous move because of unnecessary spill for 2-operand insn
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49491 Eric Weddington eric.weddington at atmel dot com changed: What|Removed |Added Status|UNCONFIRMED |NEW Last reconfirmed||2011.07.14 18:29:55 CC||eric.weddington at atmel ||dot com Ever Confirmed|0 |1 Known to fail||4.3.3, 4.6.1, 4.7.0 --- Comment #1 from Eric Weddington eric.weddington at atmel dot com 2011-07-14 18:29:55 UTC --- Confirmed. Identical failure with gcc 4.3.3 (WinAVR 20100110).
[Bug target/49687] AVR: Missed optimization for widening MUL
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49687 --- Comment #2 from Eric Weddington eric.weddington at atmel dot com 2011-07-14 18:41:56 UTC --- Created attachment 24758 -- http://gcc.gnu.org/bugzilla/attachment.cgi?id=24758 Test case results using GCC 4.3.3 (WinAVR 20100110)
[Bug debug/49750] New: -gdwarf-4 bug
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49750
Summary: -gdwarf-4 bug
Product: gcc
Version: unknown
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: debug
AssignedTo: unassig...@gcc.gnu.org
ReportedBy: tro...@gcc.gnu.org
Compile this program with '-gdwarf-4':
class C { public: C() { } };
namespace X {
typedef struct {
C m;
} t2;
t2 v;
};
The definition of the constructor for t2 is emitted weirdly.
I see:
172: Abbrev Number: 21 (DW_TAG_structure_type)
73 DW_AT_declaration : 1
73 DW_AT_sibling : 0x80
277: Abbrev Number: 22 (DW_TAG_subprogram)
78 DW_AT_name: t2
7b DW_AT_artificial : 1
7b DW_AT_declaration : 1
7b DW_AT_object_pointer: 0x1b5
... but note that there is no way to associate this with the type 't2'.
If I use plain -g, I see what I would expect: the constructor is a child
of the type 't2':
179: Abbrev Number: 10 (DW_TAG_structure_type)
7a DW_AT_specification: 0x5d
7e DW_AT_byte_size : 1
7f DW_AT_decl_file : 1
80 DW_AT_decl_line : 4
81 DW_AT_MIPS_linkage_name: (indirect string, offset: 0x2c): N1X2t2E
85 DW_AT_sibling : 0xa7
289: Abbrev Number: 11 (DW_TAG_member)
8a DW_AT_name: m
8c DW_AT_decl_file : 1
8d DW_AT_decl_line : 5
8e DW_AT_type: 0x31
92 DW_AT_data_member_location: 2 byte block: 23 0
(DW_OP_plus_uconst: 0)
295: Abbrev Number: 12 (DW_TAG_subprogram)
96 DW_AT_name: t2
99 DW_AT_artificial : 1
9a DW_AT_declaration : 1
9b DW_AT_object_pointer: 0x9f
[Bug target/49687] [4.6 Regression][avr] Missed optimization for widening MUL
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49687 Eric Weddington eric.weddington at atmel dot com changed: What|Removed |Added Status|UNCONFIRMED |NEW Last reconfirmed||2011.07.14 18:45:17 Summary|AVR: Missed optimization|[4.6 Regression][avr] |for widening MUL|Missed optimization for ||widening MUL Ever Confirmed|0 |1 --- Comment #3 from Eric Weddington eric.weddington at atmel dot com 2011-07-14 18:45:17 UTC --- The test case results using GCC 4.3.3 (WinAVR 20100110) shows that the mul8_126 case is smaller: .globalmul8_126 .typemul8_126, @function mul8_126: /* prologue: function */ /* frame size = 0 */ mov r18,r24 ; 2*movqi/1[length = 1] ldi r24,lo8(126) ; 6*movqi/2[length = 1] muls r18,r24 ; 7mulqihi3[length = 3] movw r18,r0 clr r1 movw r24,r18 ; 32*movhi/1[length = 1] /* epilogue start */ ret ; 30return[length = 1] .sizemul8_126, .-mul8_126 So this is a regression wrt to gcc 4.6.1. The case of mul8_155 shows the identical problem as for gcc 4.6.1.
[Bug c++/49751] New: Incorrect optimization related to smallest int64_t value.
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49751 Summary: Incorrect optimization related to smallest int64_t value. Product: gcc Version: 4.4.3 Status: UNCONFIRMED Severity: normal Priority: P3 Component: c++ AssignedTo: unassig...@gcc.gnu.org ReportedBy: bla...@suitabletech.com The attached program has different behavior with no optimization, and with -O2. It appears that in optimized mode, the compiler considers that taking the negative of a value always yields a negative value. This makes it tricky to write code that properly handles the largest negative value. blaise@bnl: /st/stor1/blaise/temp $ g++ test_overflow.cpp -o test_overflow -O3 ./test_overflow blaise@bnl: /st/stor1/blaise/temp $ g++ test_overflow.cpp -o test_overflow ./test_overflow test_overflow: test_overflow.cpp:13: int main(): Assertion `a 0' failed. Aborted blaise@bnl: /st/stor1/blaise/texas-plumbing/stacks/texas_videoconf/build $ g++ -v Using built-in specs. Target: x86_64-linux-gnu Configured with: ../src/configure -v --with-pkgversion='Ubuntu 4.4.3-4ubuntu5' --with-bugurl=file:///usr/share/doc/gcc-4.4/README.Bugs --enable-languages=c,c++,fortran,objc,obj-c++ --prefix=/usr --enable-shared --enable-multiarch --enable-linker-build-id --with-system-zlib --libexecdir=/usr/lib --without-included-gettext --enable-threads=posix --with-gxx-include-dir=/usr/include/c++/4.4 --program-suffix=-4.4 --enable-nls --enable-clocale=gnu --enable-libstdcxx-debug --enable-plugin --enable-objc-gc --disable-werror --with-arch-32=i486 --with-tune=generic --enable-checking=release --build=x86_64-linux-gnu --host=x86_64-linux-gnu --target=x86_64-linux-gnu Thread model: posix gcc version 4.4.3 (Ubuntu 4.4.3-4ubuntu5)
[Bug c++/49751] Incorrect optimization related to smallest int64_t value.
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49751 --- Comment #1 from Blaies Gassend blaise at suitabletech dot com 2011-07-14 18:49:59 UTC --- Created attachment 24759 -- http://gcc.gnu.org/bugzilla/attachment.cgi?id=24759 The sample program that fails.
[Bug tree-optimization/49749] Reassociation rank algorithm does not include all non-NULL operands
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49749 --- Comment #1 from William J. Schmidt wschmidt at gcc dot gnu.org 2011-07-14 19:22:08 UTC --- Created attachment 24760 -- http://gcc.gnu.org/bugzilla/attachment.cgi?id=24760 Gimple prior to reassoc2
