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[Bug tree-optimization/66101] New: [5/6 Regression] internal compiler error: in verify_loop_structure, at cfgloop.c:1662
- From: "mpolacek at gcc dot gnu.org" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: Mon, 11 May 2015 10:12:15 +0000
- Subject: [Bug tree-optimization/66101] New: [5/6 Regression] internal compiler error: in verify_loop_structure, at cfgloop.c:1662
- Auto-submitted: auto-generated
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66101
Bug ID: 66101
Summary: [5/6 Regression] internal compiler error: in
verify_loop_structure, at cfgloop.c:1662
Product: gcc
Version: 6.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: tree-optimization
Assignee: unassigned at gcc dot gnu.org
Reporter: mpolacek at gcc dot gnu.org
Target Milestone: ---
$ ./cc1 -quiet -O2 o.c
o.c: In function âbarâ:
o.c:8:5: warning: implicit declaration of function âlongjmpâ
[-Wimplicit-function-declaration]
longjmp ();
^
o.c: In function âfooâ:
o.c:16:3: warning: implicit declaration of function â_setjmpâ
[-Wimplicit-function-declaration]
_setjmp ();
^
o.c:29:1: error: size of loop 1 should be 3, not 5
}
^
o.c:29:1: internal compiler error: in verify_loop_structure, at cfgloop.c:1662
0x8437cc verify_loop_structure()
/home/marek/src/gcc/gcc/cfgloop.c:1662
0xb9b354 loop_optimizer_init(unsigned int)
/home/marek/src/gcc/gcc/loop-init.c:124
0xc872fa execute
/home/marek/src/gcc/gcc/predict.c:3056
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.
int a, c, d, e;
int
bar ()
{
int b = *(long *) 7 == 5 ? : 0;
if (a || a > b)
longjmp ();
return 1;
}
void
foo ()
{
long f;
_setjmp ();
for (; d; c++)
switch (c)
case 0:
{
f = bar () >> 1;
if (e)
goto L;
if (bar () >> 1)
goto L;
}
L:
;
}