https://gcc.gnu.org/bugzilla/show_bug.cgi?id=81510
Bug ID: 81510
Summary: ice in operator[], at vec.h:749
Product: gcc
Version: 7.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c
Assignee: unassigned at gcc dot gnu.org
Reporter: dcb314 at hotmail dot com
Target Milestone: ---
The following C code, when compiled by recent gcc trunk and flag -O3,
does this:
/home/dcb/creduce/dcbTest/bug371.c:7:1: internal compiler error: in operator[],
at vec.h:749
e() {
^
0xef8ea7 vec<_stmt_vec_info*, va_heap, vl_embed>::operator[](unsigned int)
../../trunk/gcc/vec.h:749
0xef8ea7 vec<_stmt_vec_info*, va_heap, vl_ptr>::operator[](unsigned int)
../../trunk/gcc/vec.h:1234
0xef8ea7 vinfo_for_stmt
../../trunk/gcc/tree-vectorizer.h:800
0xefeb5b vinfo_for_stmt
../../trunk/gcc/tree-vect-loop.c:3135
C code is
typedef d;
typedef f;
typedef long h;
a;
b;
c;
e() {
f *g;
h i;
for (;;)
if (g)
for (; b; b++) {
g = c;
if (a &= c) {
d *j = &b;
h k;
for (; i; i++) {
*g ?: (*j = k);
g = &a;
}
for (; i <= 3; i++)
;
}
}
}
Problem seems to exist between revisions 250361 and 250395.
