: normal
Priority: P3
Component: c
Assignee: unassigned at gcc dot gnu.org
Reporter: regehr at cs dot utah.edu
Target Milestone: ---
ICE on valid code
$ gcc -v
Using built-in specs.
COLLECT_GCC=gcc
COLLECT_LTO_WRAPPER=/home/john/gcc-install/libexec/gcc/x86_64
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: regehr at cs dot utah.edu
Target Milestone: ---
ICE on invalid code
$ g++ -v
Using built-in specs.
COLLECT_GCC=g++
COLLECT_LTO_WRAPPER=/home/regehr/z/compiler-install/gcc-r231259
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: regehr at cs dot utah.edu
Target Milestone: ---
ICE on invalid code
$ g++ -v
Using built-in specs.
COLLECT_GCC=g++
COLLECT_LTO_WRAPPER=/home/regehr/z
++
Assignee: unassigned at gcc dot gnu.org
Reporter: regehr at cs dot utah.edu
Target Milestone: ---
ICE on invalid code
$ g++ -v
Using built-in specs.
COLLECT_GCC=g++
COLLECT_LTO_WRAPPER=/home/regehr/z/compiler-install/gcc-r231259-install/libexec/gcc/x86_64-pc-linux-gnu/6.0.0/lto-wrapper
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: regehr at cs dot utah.edu
Target Milestone: ---
ICE on invalid code
$ g++ -v
Using built-in specs.
COLLECT_GCC=g++
COLLECT_LTO_WRAPPER=/home/regehr/z/compiler-install/gcc-r231259-install/libexec/gcc/x86_64-pc-linux-gnu
: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: regehr at cs dot utah.edu
Target Milestone: ---
Possibly a dup of PR68475
$ g++ -v
Using built-in specs.
COLLECT_GCC=g++
COLLECT_LTO_WRAPPER=/home/regehr/z/compiler-install
Version: 4.9.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c
Assignee: unassigned at gcc dot gnu.org
Reporter: regehr at cs dot utah.edu
CC: chenyang at cs dot utah.edu
regehr@regehr-M51AC:~/z/reduce
Priority: P3
Component: c
Assignee: unassigned at gcc dot gnu.org
Reporter: regehr at cs dot utah.edu
[regehr@imp test]$ gcc -O3 -c -Wall ./work20/reduce_55RZFl/small.c
./work20/reduce_55RZFl/small.c: In function âfn2â:
./work20/reduce_55RZFl/small.c:4:6
Assignee: unassigned at gcc dot gnu.org
Reporter: regehr at cs dot utah.edu
[regehr@imp test1]$ clang -O -Wall ./work17/reduce_D0DDXs/small.c ; ./a.out
0
[regehr@imp test1]$ gcc -O2 -Wall ./work17/reduce_D0DDXs/small.c ; ./a.out
0
[regehr@imp test1]$ gcc -Os -Wall ./work17/reduce_D0DDXs
: unassigned at gcc dot gnu.org
Reporter: regehr at cs dot utah.edu
$ gcc -O0 foo.c ; ./a.out
7
$ gcc -O1 foo.c ; ./a.out
6
$ cat foo.c
int printf(const char *, ...);
int a, b;
int main() {
b = (~a & 4102790424) > 0 | 6;
printf("%d\n", b);
return 0;
}
$ gcc -v
Usi
Component: c
Assignee: unassigned at gcc dot gnu.org
Reporter: regehr at cs dot utah.edu
Here is the obvious rotate idiom in C (this code is from Nettle):
#define ROTL32(n,x) (((x)<<(n)) | ((x)>>(32-(n
GCC does an admirable job of recognizing the code and turning it i
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=59006
--- Comment #1 from John Regehr ---
Simpler test case:
$ cat small.c
int a[10], b;
int main() {
for (; b <= 0; b++)
a[b] = a[0] || b;
}
$ gcc -O3 small.c
small.c: In function ‘main’:
small.c:2:5: internal compiler error: in vect_transform_
: normal
Priority: P3
Component: c
Assignee: unassigned at gcc dot gnu.org
Reporter: regehr at cs dot utah.edu
CC: chenyang at cs dot utah.edu
regehr@regehr-M51AC:~/z/reduce/r121$ gcc -v
Using built-in specs.
COLLECT_GCC=gcc
COLLECT_LTO_WRAPPER=/home
Assignee: unassigned at gcc dot gnu.org
Reporter: regehr at cs dot utah.edu
[regehr@imp r106]$ gcc -O2 small.c ; ./a.out
1
[regehr@imp r106]$ gcc -O3 small.c ; ./a.out
0
[regehr@imp r106]$ cat small.c
int printf(const char *, ...);
int a[8][6] = { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=58564
--- Comment #3 from John Regehr ---
Kai, this is a real bug, please reopen it.
Here is what I get out of -fdump-tree-original:
b = (int) (d == &c && a != 1);
This is wrong.
One way to illustrate the problem is to remove the useless comma ope
Assignee: unassigned at gcc dot gnu.org
Reporter: regehr at cs dot utah.edu
regehr@john-home ~ $ clang -O0 -w small.c ; ./a.out
0
regehr@john-home ~ $ gcc-4.4 -O0 -w small.c ; ./a.out
0
regehr@john-home ~ $ gcc-4.6 -O0 -w small.c ; ./a.out
0
regehr@john-home ~ $ gcc-4.7 -O0 -w small.c ; ./a.out
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=58546
--- Comment #2 from John Regehr ---
I agree, this is not very likely to cause problems in practice, though I
selfishly hope that it gets fixed because then this bug will stop getting in
our way when we look for other volatile bugs.
Assignee: unassigned at gcc dot gnu.org
Reporter: regehr at cs dot utah.edu
I believe that gcc r202854 for x86-64 Linux miscompiles the program below at
-Os.
int a;
volatile char b = 1;
short c[] = { 0, 0, 0, 0, 0, 0, 1 };
int main() {
for (; a >= 0; a--)
c[6]++;
retur
: unassigned at gcc dot gnu.org
Reporter: regehr at cs dot utah.edu
CC: chenyang at cs dot utah.edu
regehr@john-home ~/z/reduce/r112 $ gcc -O0 small.c ; ./a.out
0
regehr@john-home ~/z/reduce/r112 $ gcc -O1 small.c ; ./a.out
1
regehr@john-home ~/z/reduce/r112 $ cat small.c
int
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=57393
John Regehr changed:
What|Removed |Added
CC||regehr at cs dot utah.edu
--- Comment #34
: unassigned at gcc dot gnu.org
Reporter: regehr at cs dot utah.edu
CC: chenyang at cs dot utah.edu
regehr@john-home ~/z/reduce/r109 $ clang -O small.c ; ./a.out
0
regehr@john-home ~/z/reduce/r109 $ gcc -O small.c ; ./a.out
0
regehr@john-home ~/z/reduce/r109 $ gcc -Os small.c
: unassigned at gcc dot gnu.org
Reporter: regehr at cs dot utah.edu
CC: chenyang at cs dot utah.edu
regehr@john-home ~/z/reduce/r107 $ gcc -O0 small.c ; ./a.out
regehr@john-home ~/z/reduce/r107 $ gcc -O1 small.c ; ./a.out
x
regehr@john-home ~/z/reduce/r107 $ cat small.c
int
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47409
--- Comment #12 from John Regehr 2013-01-30
23:24:36 UTC ---
(In reply to comment #10)
> As said previously I think that volatile struct members are ill-defined.
As far as the C standard goes, I believe the situation is clear: a volatile
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=56144
Bug #: 56144
Summary: ICE in get_reload_reg, at lra-constraints.c:421
Classification: Unclassified
Product: gcc
Version: 4.8.0
Status: UNCONFIRMED
Severity: normal
P
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47409
--- Comment #9 from John Regehr 2013-01-30 04:36:01
UTC ---
Just wanted to ping about this one; it's still there in tonight's GCC.
regehr@home:~$ cat vol.c
struct s2 {
volatile int x;
};
struct s2 s;
void foo (void) {
s = s;
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54027
Bug #: 54027
Summary: possible mis-optimization of signed left shift in c89
mode
Classification: Unclassified
Product: gcc
Version: 4.8.0
Status: UNCONFIRMED
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53968
--- Comment #1 from John Regehr 2012-07-14 22:53:06
UTC ---
Also there are about 50 defects relating to C99's restrictive rules for
left-shifts of signed integers. I have omitted them since people typically
don't care to fix these. If anyone wa
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53968
Bug #: 53968
Summary: integer undefined behaviors in GCC
Classification: Unclassified
Product: gcc
Version: 4.8.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53519
Bug #: 53519
Summary: ice in do_SUBST, at combine.c:707
Classification: Unclassified
Product: gcc
Version: 4.8.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53495
Bug #: 53495
Summary: segmentation fault
Classification: Unclassified
Product: gcc
Version: 4.8.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53411
Bug #: 53411
Summary: segfault
Classification: Unclassified
Product: gcc
Version: 4.8.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53410
Bug #: 53410
Summary: ICE in build_int_cst_wide, at tree.c:1219
Classification: Unclassified
Product: gcc
Version: 4.8.0
Status: UNCONFIRMED
Severity: normal
Priority
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53408
Bug #: 53408
Summary: ICE in get_initial_def_for_induction, at
tree-vect-loop.c:3222
Classification: Unclassified
Product: gcc
Version: 4.8.0
Status: UNCONFIRMED
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53409
Bug #: 53409
Summary: ICE: vector VEC(vec_void_p,base) index domain error,
in vinfo_for_stmt at tree-vectorizer.h:630
Classification: Unclassified
Product: gcc
Version: 4.8.0
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53168
Bug #: 53168
Summary: ICE in find_or_generate_expression, at
tree-ssa-pre.c:3053
Classification: Unclassified
Product: gcc
Version: 4.8.0
Status: UNCONFIRMED
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53163
Bug #: 53163
Summary: crash due to null ptr deref
Classification: Unclassified
Product: gcc
Version: 4.8.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53160
Bug #: 53160
Summary: likely wrong code bug
Classification: Unclassified
Product: gcc
Version: 4.8.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Compon
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53010
--- Comment #2 from John Regehr 2012-04-24 04:51:01
UTC ---
Yes, this has gone away as of the last couple days.
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=52979
--- Comment #3 from John Regehr 2012-04-23 17:47:42
UTC ---
I'll see if I can find another test case for this one.
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53010
Bug #: 53010
Summary: crash due to null ptr deref
Classification: Unclassified
Product: gcc
Version: 4.8.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=52996
Bug #: 52996
Summary: ice in verify_loop_structure, at cfgloop.c:1567
Classification: Unclassified
Product: gcc
Version: 4.8.0
Status: UNCONFIRMED
Severity: normal
Pr
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=52979
Bug #: 52979
Summary: likely wrong code bug w/packed bitfields
Classification: Unclassified
Product: gcc
Version: 4.8.0
Status: UNCONFIRMED
Severity: normal
Priority:
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=52943
Bug #: 52943
Summary: likely wrong code bug
Classification: Unclassified
Product: gcc
Version: 4.8.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Compon
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=52891
John Regehr changed:
What|Removed |Added
CC||regehr at cs dot utah.edu
--- Comment #2
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=52881
--- Comment #1 from John Regehr 2012-04-09 16:18:46
UTC ---
*** Bug 52913 has been marked as a duplicate of this bug. ***
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=52913
John Regehr changed:
What|Removed |Added
Status|UNCONFIRMED |RESOLVED
Resolution|
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=52914
Bug #: 52914
Summary: ICE in simplify_const_unary_operation, at
simplify-rtx.c:1464
Classification: Unclassified
Product: gcc
Version: 4.8.0
Status: UNCONFIRMED
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=52913
Bug #: 52913
Summary: segfault due to null ptr deref
Classification: Unclassified
Product: gcc
Version: 4.8.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=52912
Bug #: 52912
Summary: ICE: verify_ssa failed
Classification: Unclassified
Product: gcc
Version: 4.8.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Compo
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=52883
Bug #: 52883
Summary: ICE in simplify_const_unary_operation, at
simplify-rtx.c:1464
Classification: Unclassified
Product: gcc
Version: 4.8.0
Status: UNCONFIRMED
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=52882
Bug #: 52882
Summary: ICE in memory_address_length, at
config/i386/i386.c:23373
Classification: Unclassified
Product: gcc
Version: 4.8.0
Status: UNCONFIRMED
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=52881
Bug #: 52881
Summary: ICE due to null pointer deref
Classification: Unclassified
Product: gcc
Version: 4.8.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=52437
Bug #: 52437
Summary: internal compiler error: in spill_failure, at
reload1.c:2120
Classification: Unclassified
Product: gcc
Version: 4.7.0
Status: UNCONFIRMED
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=52406
Bug #: 52406
Summary: likely wrong code bug
Classification: Unclassified
Product: gcc
Version: 4.7.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Compon
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=52298
Bug #: 52298
Summary: ICE: verify_ssa failed: definition in block follows
use
Classification: Unclassified
Product: gcc
Version: 4.7.0
Status: UNCONFIRMED
S
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=52286
--- Comment #2 from John Regehr 2012-02-16 18:51:50
UTC ---
Sorry, previous one wasn't quite reduced.
int printf ( const char *, ... );
int a, b;
int main (void)
{
b = (~a | 0 >= 0) & 0x98685255F;
printf ("%d\n", b < 0);
return 0;
}
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=52286
John Regehr changed:
What|Removed |Added
CC||chenyang at cs dot utah.edu
--- Comment #1
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=52286
Bug #: 52286
Summary: wrong code bug
Classification: Unclassified
Product: gcc
Version: 4.7.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=52173
--- Comment #5 from John Regehr 2012-02-15 03:58:22
UTC ---
Sorry, see PR52255
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=52255
Bug #: 52255
Summary: ICE: verify_ssa failed, block does not dominate use
Classification: Unclassified
Product: gcc
Version: 4.7.0
Status: UNCONFIRMED
Severity: normal
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=52173
John Regehr changed:
What|Removed |Added
CC||regehr at cs dot utah.edu
--- Comment #3
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=52209
Bug #: 52209
Summary: wrong code at -O0
Classification: Unclassified
Product: gcc
Version: 4.7.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component:
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=52092
Bug #: 52092
Summary: ICE: internal consistency failure
Classification: Unclassified
Product: gcc
Version: 4.7.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=52091
Bug #: 52091
Summary: ICE: verify_gimple failed
Classification: Unclassified
Product: gcc
Version: 4.7.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Co
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=52073
Bug #: 52073
Summary: ICE: vector VEC(vec_void_p,base) index domain error,
in vinfo_for_stmt at tree-vectorizer.h:620
Classification: Unclassified
Product: gcc
Version: 4.7.0
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50800
--- Comment #5 from John Regehr 2011-12-05 22:07:16
UTC ---
Created attachment 25997
--> http://gcc.gnu.org/bugzilla/attachment.cgi?id=25997
smaller again
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50800
--- Comment #4 from John Regehr 2011-12-03 07:01:50
UTC ---
Created attachment 25977
--> http://gcc.gnu.org/bugzilla/attachment.cgi?id=25977
smaller test case
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=51247
Bug #: 51247
Summary: ICE in set_value_range, at tree-vrp.c:417
Classification: Unclassified
Product: gcc
Version: 4.7.0
Status: UNCONFIRMED
Severity: normal
Priority
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=51246
Bug #: 51246
Summary: ICE in replace_ref_with, at tree-predcom.c:1309
Classification: Unclassified
Product: gcc
Version: 4.7.0
Status: UNCONFIRMED
Severity: normal
Pr
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=51245
Bug #: 51245
Summary: ICE in vn_reference_insert_pieces, at
tree-ssa-sccvn.c:1983
Classification: Unclassified
Product: gcc
Version: 4.7.0
Status: UNCONFIRMED
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=51176
Bug #: 51176
Summary: possible integer wrong code bug
Classification: Unclassified
Product: gcc
Version: 4.7.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=51070
Bug #: 51070
Summary: ICE verify_gimple failed
Classification: Unclassified
Product: gcc
Version: 4.7.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Com
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=51069
Bug #: 51069
Summary: ICE in verify_loop_structure, at cfgloop.c:1559
Classification: Unclassified
Product: gcc
Version: 4.7.0
Status: UNCONFIRMED
Severity: normal
Pr
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=51042
Bug #: 51042
Summary: segfault
Classification: Unclassified
Product: gcc
Version: 4.7.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50762
--- Comment #5 from John Regehr 2011-11-08 16:13:38
UTC ---
(In reply to comment #2)
> I have updated the summary, but please do not hijack PRs.
I'd be happy to not hijack PRs but you will need to help.
My assumptions have been:
1. Sometimes,
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=51023
--- Comment #1 from John Regehr 2011-11-08 05:53:57
UTC ---
Slightly smaller testcase:
int printf (const char *, ...);
short func_11 (int si1) {
return si1;
}
int main () {
int l_141 = 0x4272A;
printf ("%d\n", func_11 (l_141) == l_141);
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=51023
Bug #: 51023
Summary: likely integer wrong code bug
Classification: Unclassified
Product: gcc
Version: 4.7.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50762
John Regehr changed:
What|Removed |Added
CC||regehr at cs dot utah.edu
--- Comment #1
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49927
Summary: ice in spill_failure, at reload1.c:2120
Product: gcc
Version: 4.7.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c
AssignedTo: unassig...@gcc
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49926
Summary: ice in process_use, at tree-vect-stmts.c:405
Product: gcc
Version: 4.7.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c
AssignedTo: unassig..
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49712
Summary: internal compiler error: in gen_lsm_tmp_name, at
tree-ssa-loop-im.c:2048
Product: gcc
Version: 4.7.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49710
Summary: segfault
Product: gcc
Version: 4.7.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c
AssignedTo: unassig...@gcc.gnu.org
ReportedBy: re
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49518
Summary: ICE in vect_enhance_data_refs_alignment, at
tree-vect-data-refs.c:1555
Product: gcc
Version: 4.7.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49071
--- Comment #1 from John Regehr 2011-05-19 19:27:34
UTC ---
May be related to 48124
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=48734
Summary: ICE in eliminate_redundant_comparison, at
tree-ssa-reassoc.c:1321
Product: gcc
Version: 4.7.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
C
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=48717
Summary: likely integer wrong code bug
Product: gcc
Version: 4.7.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c
AssignedTo: unassig...@gcc.gnu.org
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=48694
--- Comment #2 from John Regehr 2011-04-19 21:52:22
UTC ---
Same testcase dies after consuming about 14 GB virtual memory on a machine with
8 GB of RAM.
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=48694
--- Comment #1 from John Regehr 2011-04-19 21:16:39
UTC ---
Sorry forgot to add this.
[regehr@gamow tmp011]$ current-gcc -O1 -fwhole-program small.c -w
current-gcc: internal compiler error: Killed (program cc1)
Please submit a full bug report,
w
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=48694
Summary: possible memory hog bug
Product: gcc
Version: 4.7.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c
AssignedTo: unassig...@gcc.gnu.org
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=48381
Summary: internal compiler error: in check_allocation, at
ira.c:2094
Product: gcc
Version: 4.7.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Compone
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=48305
Summary: ice at -O0: verify_gimple failed
Product: gcc
Version: 4.7.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c
AssignedTo: unassig...@gcc.gnu.or
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=48197
--- Comment #6 from John Regehr 2011-03-18 20:23:32
UTC ---
Bleh... nevermind the longer test, it carries along my misunderstanding of the
sign extension. Anyway, thanks!
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=48197
--- Comment #5 from John Regehr 2011-03-18 20:14:51
UTC ---
Here's a test case:
int printf(const char *format, ...);
int main (void)
{
int y = 0x8000;
int x1 = (long)0 > ((unsigned int)0 ^ (signed short)y);
int x2 = (long)0 > ((unsigned i
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=48197
--- Comment #4 from John Regehr 2011-03-18 20:12:31
UTC ---
Thanks Jakub, I was just about to send the same example!
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=48197
--- Comment #2 from John Regehr 2011-03-18 20:04:04
UTC ---
(In reply to comment #1)
>x = (long)0 > ((unsigned int)0 ^ (signed short)0x8000);
>x = (long)0 > ((unsigned)0 ^ (unsigned)0x8000);
> I think you missed something here (unsigned)(
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=48197
Summary: possible wrong code bug at -O0
Product: gcc
Version: 4.7.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c
AssignedTo: unassig...@gcc.gnu.org
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=48146
Summary: ICE tree check: expected ssa_name, have var_decl in
has_zero_uses, at tree-flow-inline.h:342
Product: gcc
Version: 4.7.0
Status: UNCONFIRMED
Severity: normal
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=48136
Summary: verify_gimple failed at -O0
Product: gcc
Version: 4.7.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c
AssignedTo: unassig...@gcc.gnu.org
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=48124
Summary: likely wrong code bug
Product: gcc
Version: 4.7.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c
AssignedTo: unassig...@gcc.gnu.org
R
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47937
Summary: possible integer bug
Product: gcc
Version: 4.6.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c
AssignedTo: unassig...@gcc.gnu.org
Re
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