https://gcc.gnu.org/bugzilla/show_bug.cgi?id=82422
Bug ID: 82422
Summary: [8 Regression][graphite] ICE in set_codegen_error, at
graphite-isl-ast-to-gimple.c:248
Product: gcc
Version: unknown
Status: UNCONFIRMED
Keywords: ice-on-valid-code
Severity: normal
Priority: P3
Component: tree-optimization
Assignee: unassigned at gcc dot gnu.org
Reporter: marxin at gcc dot gnu.org
CC: rguenth at gcc dot gnu.org
Target Milestone: ---
Starting from r253342 we ICE on:
$ cat /tmp/tmp2l_3nwgp.i
a;
b[6];
c ()
{
int d;
for (; d; d++)
b[d] = 0;
for (; d < 8; d++)
a += b[d];
}
$ gcc -floop-nest-optimize -O2 /tmp/tmp2l_3nwgp.i
/tmp/tmp2l_3nwgp.i:1:1: warning: data definition has no type or storage class
a;
^
/tmp/tmp2l_3nwgp.i:1:1: warning: type defaults to ‘int’ in declaration of ‘a’
[-Wimplicit-int]
/tmp/tmp2l_3nwgp.i:2:1: warning: data definition has no type or storage class
b[6];
^
/tmp/tmp2l_3nwgp.i:2:1: warning: type defaults to ‘int’ in declaration of ‘b’
[-Wimplicit-int]
/tmp/tmp2l_3nwgp.i:3:1: warning: return type defaults to ‘int’ [-Wimplicit-int]
c ()
^
/tmp/tmp2l_3nwgp.i: In function ‘c’:
/tmp/tmp2l_3nwgp.i:9:11: warning: iteration 6 invokes undefined behavior
[-Waggressive-loop-optimizations]
a += b[d];
~^~~
/tmp/tmp2l_3nwgp.i:8:3: note: within this loop
for (; d < 8; d++)
^~~
during GIMPLE pass: graphite
/tmp/tmp2l_3nwgp.i:3:1: internal compiler error: in set_codegen_error, at
graphite-isl-ast-to-gimple.c:248
c ()
^
