https://gcc.gnu.org/bugzilla/show_bug.cgi?id=87826
Bug ID: 87826
Summary: ubsan: gimple-ssa-store-merging.c:281
Product: gcc
Version: 8.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c
Assignee: unassigned at gcc dot gnu.org
Reporter: dcb314 at hotmail dot com
Target Milestone: ---
$ ../results.265631.ubsan/bin/gcc -c -O3 bug472.c
../../trunk/gcc/gimple-ssa-store-merging.c:281:12: runtime error: shift
exponent 64 is too large for 64-bit type 'long unsigned int'
$
For this C code:
typedef a;
*b;
c;
d() {
a e, f = 8 + 8;
e = 0;
for (; e < f; ++e)
b[e] = c >> e * 8;
}
The bug seems to be sometime before revision 264725.
