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* [Bug tree-optimization/54098] New: [tree-vrp] ICE on valid code
@ 2012-07-26 8:25 zhroma at newmail dot ru
2012-07-26 9:00 ` [Bug tree-optimization/54098] [4.8 Regression] " rguenth at gcc dot gnu.org
` (2 more replies)
0 siblings, 3 replies; 4+ messages in thread
From: zhroma at newmail dot ru @ 2012-07-26 8:25 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54098
Bug #: 54098
Summary: [tree-vrp] ICE on valid code
Classification: Unclassified
Product: gcc
Version: 4.8.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: tree-optimization
AssignedTo: unassigned@gcc.gnu.org
ReportedBy: zhroma@newmail.ru
Created attachment 27876
--> http://gcc.gnu.org/bugzilla/attachment.cgi?id=27876
Preprocessed minimized testcase.
gcc 4.8 revision 188728 and later segfaults on 64bit Linux while compiling the
attached code with -march=nocona.
$ gcc -Wall -O2 -march=nocona -c foo-small.c
foo-small.c: In function 'pbus_size_mem':
foo-small.c:35:6: internal compiler error: Segmentation fault
void pbus_size_mem(struct pci_bus *bus, unsigned long mask, unsigned long
type, unsigned long long min_size, unsigned long long add_size, void
*realloc_head) {
^
Please submit a full bug report,
with preprocessed source if appropriate.
See <http://gcc.gnu.org/bugs.html> for instructions.
$ gcc --version
gcc (GCC) 4.8.0 20120618 (experimental)
Copyright (C) 2012 Free Software Foundation, Inc.
This is free software; see the source for copying conditions. There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
gcc configured with "--disable-bootstrap --enable-languages=c,c++"
4.6.3 works ok. 4.8 trunk up to revision 188727 also works ok.
^ permalink raw reply [flat|nested] 4+ messages in thread
* [Bug tree-optimization/54098] [4.8 Regression] ICE on valid code
2012-07-26 8:25 [Bug tree-optimization/54098] New: [tree-vrp] ICE on valid code zhroma at newmail dot ru
@ 2012-07-26 9:00 ` rguenth at gcc dot gnu.org
2012-07-26 10:25 ` rguenth at gcc dot gnu.org
2012-07-26 11:30 ` rguenth at gcc dot gnu.org
2 siblings, 0 replies; 4+ messages in thread
From: rguenth at gcc dot gnu.org @ 2012-07-26 9:00 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54098
Richard Guenther <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |ASSIGNED
Last reconfirmed| |2012-07-26
Target Milestone|--- |4.8.0
Summary|[tree-vrp] ICE on valid |[4.8 Regression] ICE on
|code |valid code
Ever Confirmed|0 |1
--- Comment #1 from Richard Guenther <rguenth at gcc dot gnu.org> 2012-07-26 09:00:10 UTC ---
Confirmed, mine.
Program received signal SIGSEGV, Segmentation fault.
0x0000000000e03ca0 in compare_values_warnv (val1=0x0, val2=0x7ffff70bef00,
strict_overflow_p=0x7fffffffd83b "")
at /space/rguenther/src/svn/trunk/gcc/tree-vrp.c:1148
1148 gcc_assert (POINTER_TYPE_P (TREE_TYPE (val1))
(gdb) p val1
$1 = (tree) 0x0
lhs_vr is undefined in vrp_visit_phi_node at
7671 if (edges > 0
7672 && gimple_phi_num_args (phi) > 1
7673 && edges == old_edges)
7674 {
7675 int cmp_min = compare_values (lhs_vr->min, vr_result.min);
7676 int cmp_max = compare_values (lhs_vr->max, vr_result.max);
^ permalink raw reply [flat|nested] 4+ messages in thread
* [Bug tree-optimization/54098] [4.8 Regression] ICE on valid code
2012-07-26 8:25 [Bug tree-optimization/54098] New: [tree-vrp] ICE on valid code zhroma at newmail dot ru
2012-07-26 9:00 ` [Bug tree-optimization/54098] [4.8 Regression] " rguenth at gcc dot gnu.org
@ 2012-07-26 10:25 ` rguenth at gcc dot gnu.org
2012-07-26 11:30 ` rguenth at gcc dot gnu.org
2 siblings, 0 replies; 4+ messages in thread
From: rguenth at gcc dot gnu.org @ 2012-07-26 10:25 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54098
--- Comment #2 from Richard Guenther <rguenth at gcc dot gnu.org> 2012-07-26 10:25:21 UTC ---
Author: rguenth
Date: Thu Jul 26 10:25:15 2012
New Revision: 189885
URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=189885
Log:
2012-07-26 Richard Guenther <rguenther@suse.de>
PR tree-optimization/54098
* tree-vrp.c (vrp_visit_phi_node): Iterate once more if the
original range was UNDEFINED.
* gcc.dg/torture/pr54098.c: New testcase.
Added:
trunk/gcc/testsuite/gcc.dg/torture/pr54098.c
Modified:
trunk/gcc/ChangeLog
trunk/gcc/testsuite/ChangeLog
trunk/gcc/tree-vrp.c
^ permalink raw reply [flat|nested] 4+ messages in thread
* [Bug tree-optimization/54098] [4.8 Regression] ICE on valid code
2012-07-26 8:25 [Bug tree-optimization/54098] New: [tree-vrp] ICE on valid code zhroma at newmail dot ru
2012-07-26 9:00 ` [Bug tree-optimization/54098] [4.8 Regression] " rguenth at gcc dot gnu.org
2012-07-26 10:25 ` rguenth at gcc dot gnu.org
@ 2012-07-26 11:30 ` rguenth at gcc dot gnu.org
2 siblings, 0 replies; 4+ messages in thread
From: rguenth at gcc dot gnu.org @ 2012-07-26 11:30 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54098
Richard Guenther <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Resolution| |FIXED
--- Comment #3 from Richard Guenther <rguenth at gcc dot gnu.org> 2012-07-26 11:30:19 UTC ---
Fixed.
^ permalink raw reply [flat|nested] 4+ messages in thread
end of thread, other threads:[~2012-07-26 11:30 UTC | newest]
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2012-07-26 8:25 [Bug tree-optimization/54098] New: [tree-vrp] ICE on valid code zhroma at newmail dot ru
2012-07-26 9:00 ` [Bug tree-optimization/54098] [4.8 Regression] " rguenth at gcc dot gnu.org
2012-07-26 10:25 ` rguenth at gcc dot gnu.org
2012-07-26 11:30 ` rguenth at gcc dot gnu.org
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