https://gcc.gnu.org/bugzilla/show_bug.cgi?id=96823
Bug ID: 96823
Summary: ice from irange::irange_intersect
Product: gcc
Version: unknown
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c
Assignee: unassigned at gcc dot gnu.org
Reporter: dcb314 at hotmail dot com
Target Milestone: ---
Sometime between yesterday (20200826) and today, the following C code
int a, b, c;
void d() {
unsigned short e;
while (b)
;
e = (e + 5) / 0;
switch (e)
case 0:
case 3:
c = a;
}
broke in this way:
/home/dcb/gcc/results.20200826/bin/gcc
/home/dcb/gcc/results.20200827/bin/gcc
during GIMPLE pass: vrp
resample_f.c: In function ‘rs_vib_loop’:
resample_f.c:3230:20: internal compiler error: in decompose, at wide-int.h:984
0xfc1e55 irange::irange_intersect(irange const&)
../../trunk.git/gcc/value-range.cc:0
0xfc15ca irange::intersect(irange const*)
../../trunk.git/gcc/value-range.cc:1539
0xf6a036 find_case_label_range(gswitch*, irange const*)
../../trunk.git/gcc/tree-vrp.c:3853
Flag -O2 required.
