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* [Bug middle-end/66945] New: ICE in generic_simplify (generic-match.c:24790)
@ 2015-07-20 15:27 antoine.balestrat at gmail dot com
2015-07-21 7:57 ` [Bug middle-end/66945] " rguenth at gcc dot gnu.org
` (3 more replies)
0 siblings, 4 replies; 5+ messages in thread
From: antoine.balestrat at gmail dot com @ 2015-07-20 15:27 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66945
Bug ID: 66945
Summary: ICE in generic_simplify (generic-match.c:24790)
Product: gcc
Version: 6.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: middle-end
Assignee: unassigned at gcc dot gnu.org
Reporter: antoine.balestrat at gmail dot com
Target Milestone: ---
Hello !
This very pathological testcase seems to trigger an ICE with a freshly built
gcc.
$ xgcc --version
gcc (GCC) 6.0.0 20150720 (experimental)
$ cat tested.c
unsigned b;
f()
{
for(;;)
if(!b?:(b=0));
else if(b%0<b?:b)
for(;;);
}
$ xgcc -w -O1 tested.c
~/experiments/gcc/dist/bin/gcc -w -O1 tested.c
tested.c: In function ‘f’:
tested.c:2:1: internal compiler error: Segmentation fault
f()
^
0xb7bd2f crash_signal
../../srcdir/gcc/toplev.c:352
0x91332d generic_simplify(unsigned int, tree_code, tree_node*, tree_node*,
tree_node*)
/home/antoine/gcc/objdir/gcc/generic-match.c:24790
0x826037 fold_binary_loc(unsigned int, tree_code, tree_node*, tree_node*,
tree_node*)
../../srcdir/gcc/fold-const.c:9190
0xbc2eed cleanup_control_expr_graph
../../srcdir/gcc/tree-cfgcleanup.c:116
0xbc2eed cleanup_control_flow_bb
../../srcdir/gcc/tree-cfgcleanup.c:211
0xbc2eed cleanup_tree_cfg_bb
../../srcdir/gcc/tree-cfgcleanup.c:628
0xbc3548 cleanup_tree_cfg_1
../../srcdir/gcc/tree-cfgcleanup.c:681
0xbc3548 cleanup_tree_cfg_noloop
../../srcdir/gcc/tree-cfgcleanup.c:733
0xbc3548 cleanup_tree_cfg()
../../srcdir/gcc/tree-cfgcleanup.c:788
0xab7e44 execute_function_todo
../../srcdir/gcc/passes.c:1900
0xab8733 execute_todo
../../srcdir/gcc/passes.c:2005
Please submit a full bug report,
with preprocessed source if appropriate.
Please include the complete backtrace with any bug report.
See <http://gcc.gnu.org/bugs.html> for instructions.
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From: "zhykzhykzhyk at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/66944] static thread_local member in class template may cause compilation to fail
Date: Mon, 20 Jul 2015 15:34:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?idf944
zhykzhykzhyk at gmail dot com changed:
What |Removed |Added
----------------------------------------------------------------------------
Severity|normal |major
^ permalink raw reply [flat|nested] 5+ messages in thread
* [Bug middle-end/66945] ICE in generic_simplify (generic-match.c:24790)
2015-07-20 15:27 [Bug middle-end/66945] New: ICE in generic_simplify (generic-match.c:24790) antoine.balestrat at gmail dot com
@ 2015-07-21 7:57 ` rguenth at gcc dot gnu.org
2015-07-21 12:30 ` rguenth at gcc dot gnu.org
` (2 subsequent siblings)
3 siblings, 0 replies; 5+ messages in thread
From: rguenth at gcc dot gnu.org @ 2015-07-21 7:57 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66945
Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |ASSIGNED
Last reconfirmed| |2015-07-21
Assignee|unassigned at gcc dot gnu.org |rguenth at gcc dot gnu.org
Ever confirmed|0 |1
--- Comment #1 from Richard Biener <rguenth at gcc dot gnu.org> ---
(gdb) up
#1 0x0000000000a0c151 in fold_binary_loc (loc=2147483656, code=NE_EXPR,
type=<boolean_type 0x7ffff68d0d20 _Bool>, op0=<ssa_name 0x7ffff6a061f8>,
op1=<integer_cst 0x7ffff68e9000>)
at /space/rguenther/tramp3d/trunk/gcc/fold-const.c:9068
9068 tem = generic_simplify (loc, code, type, op0, op1);
(gdb) p debug_tree (op0)
<ssa_name 0x7ffff6a061f8 nothrowdef_stmt
version 13 in-free-list>
$1 = void
Mine.
^ permalink raw reply [flat|nested] 5+ messages in thread
* [Bug middle-end/66945] ICE in generic_simplify (generic-match.c:24790)
2015-07-20 15:27 [Bug middle-end/66945] New: ICE in generic_simplify (generic-match.c:24790) antoine.balestrat at gmail dot com
2015-07-21 7:57 ` [Bug middle-end/66945] " rguenth at gcc dot gnu.org
@ 2015-07-21 12:30 ` rguenth at gcc dot gnu.org
2015-07-23 7:24 ` rguenth at gcc dot gnu.org
2015-07-23 7:24 ` rguenth at gcc dot gnu.org
3 siblings, 0 replies; 5+ messages in thread
From: rguenth at gcc dot gnu.org @ 2015-07-21 12:30 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66945
--- Comment #2 from Richard Biener <rguenth at gcc dot gnu.org> ---
Ok, this is
0 > unsigned
vs.
X > X % Y
applying on
0 > 0 % 0
...
^ permalink raw reply [flat|nested] 5+ messages in thread
* [Bug middle-end/66945] ICE in generic_simplify (generic-match.c:24790)
2015-07-20 15:27 [Bug middle-end/66945] New: ICE in generic_simplify (generic-match.c:24790) antoine.balestrat at gmail dot com
2015-07-21 7:57 ` [Bug middle-end/66945] " rguenth at gcc dot gnu.org
2015-07-21 12:30 ` rguenth at gcc dot gnu.org
@ 2015-07-23 7:24 ` rguenth at gcc dot gnu.org
2015-07-23 7:24 ` rguenth at gcc dot gnu.org
3 siblings, 0 replies; 5+ messages in thread
From: rguenth at gcc dot gnu.org @ 2015-07-23 7:24 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66945
--- Comment #3 from Richard Biener <rguenth at gcc dot gnu.org> ---
Author: rguenth
Date: Thu Jul 23 07:23:23 2015
New Revision: 226088
URL: https://gcc.gnu.org/viewcvs?rev=226088&root=gcc&view=rev
Log:
2015-07-23 Richard Biener <rguenther@suse.de>
PR tree-optimization/66945
* tree-ssa-propagate.c (substitute_and_fold_dom_walker
::before_dom_children): Force the propagators idea of
non-executable edges to materialize, not what the folder
chooses.
* gcc.dg/torture/pr66945.c: New testcase.
Added:
trunk/gcc/testsuite/gcc.dg/torture/pr66945.c
Modified:
trunk/gcc/ChangeLog
trunk/gcc/testsuite/ChangeLog
trunk/gcc/tree-ssa-propagate.c
^ permalink raw reply [flat|nested] 5+ messages in thread
* [Bug middle-end/66945] ICE in generic_simplify (generic-match.c:24790)
2015-07-20 15:27 [Bug middle-end/66945] New: ICE in generic_simplify (generic-match.c:24790) antoine.balestrat at gmail dot com
` (2 preceding siblings ...)
2015-07-23 7:24 ` rguenth at gcc dot gnu.org
@ 2015-07-23 7:24 ` rguenth at gcc dot gnu.org
3 siblings, 0 replies; 5+ messages in thread
From: rguenth at gcc dot gnu.org @ 2015-07-23 7:24 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66945
Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Resolution|--- |FIXED
--- Comment #4 from Richard Biener <rguenth at gcc dot gnu.org> ---
Fixed.
^ permalink raw reply [flat|nested] 5+ messages in thread
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2015-07-20 15:27 [Bug middle-end/66945] New: ICE in generic_simplify (generic-match.c:24790) antoine.balestrat at gmail dot com
2015-07-21 7:57 ` [Bug middle-end/66945] " rguenth at gcc dot gnu.org
2015-07-21 12:30 ` rguenth at gcc dot gnu.org
2015-07-23 7:24 ` rguenth at gcc dot gnu.org
2015-07-23 7:24 ` rguenth at gcc dot gnu.org
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