https://gcc.gnu.org/bugzilla/show_bug.cgi?id=105971
Bug ID: 105971
Summary: [12/13 Regression] ICE in bitmap_check_index, at
sbitmap.h:104
Product: gcc
Version: 13.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c
Assignee: unassigned at gcc dot gnu.org
Reporter: gs...@t-online.de
Target Milestone: ---
Started between 20211121 and 20211128, at -O1+ :
(gcc configured with --enable-checking=yes)
$ cat z1.c
void a()
{
int b;
int c;
int d = a;
_Complex float *e = a;
for (;;) {
(*e += d) / b ?: 0;
}
}
$ gcc-13-20220612 -c z1.c -O2
z1.c: In function 'a':
z1.c:5:11: warning: initialization of 'int' from 'void (*)()' makes integer
from pointer without a cast [-Wint-conversion]
5 | int d = a;
| ^
z1.c:6:23: warning: initialization of '_Complex float *' from incompatible
pointer type 'void (*)()' [-Wincompatible-pointer-types]
6 | _Complex float *e = a;
| ^
during GIMPLE pass: dse
z1.c:10:1: internal compiler error: in bitmap_check_index, at sbitmap.h:104
10 | }
| ^
0x1e915d1 bitmap_check_index
../../gcc/sbitmap.h:104
0x1e915d1 bitmap_bit_in_range_p(simple_bitmap_def const*, unsigned int,
unsigned int)
../../gcc/sbitmap.cc:336
0xf7f37c live_bytes_read
../../gcc/tree-ssa-dse.cc:786
0xf7f37c dse_classify_store(ao_ref*, gimple*, bool, simple_bitmap_def*, bool*,
tree_node*)
../../gcc/tree-ssa-dse.cc:1007
0xf827f8 dse_optimize_stmt
../../gcc/tree-ssa-dse.cc:1421
0xf827f8 execute
../../gcc/tree-ssa-dse.cc:1527
