https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88956
Bug ID: 88956
Summary: [9 Regression] ICE: Floating point exception
Product: gcc
Version: 9.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c
Assignee: unassigned at gcc dot gnu.org
Reporter: gs...@t-online.de
Target Milestone: ---
Changed between 20180708 and 20180722 :
$ cat z1.c
const char a[0][0] = { };
char b[3];
void f (void)
{
__builtin_memcpy (b, a, 2);
}
$ gcc-9-20180708 -c z1.c
$
$ gcc-9-20190120 -c z1.c
during GIMPLE pass: lower
z1.c: In function 'f':
z1.c:3:6: internal compiler error: Floating point exception
3 | void f (void)
| ^
0xa8afef crash_signal
../../gcc/toplev.c:326
0x837abc fold_array_ctor_reference
../../gcc/gimple-fold.c:6732
0x837abc fold_ctor_reference(tree_node*, tree_node*, poly_int<1u, unsigned
long> const&, poly_int<1u, unsigned long> const&, tree_node*, unsigned long*)
../../gcc/gimple-fold.c:6925
0x7ccb38 string_constant(tree_node*, tree_node**, tree_node**, tree_node**)
../../gcc/expr.c:11533
0x6b11ee c_strlen(tree_node*, int, c_strlen_data*, unsigned int)
../../gcc/builtins.c:676
0x83c2c0 gimple_fold_builtin_memory_op
../../gcc/gimple-fold.c:760
0x83dbbf gimple_fold_builtin
../../gcc/gimple-fold.c:3849
0x8407db gimple_fold_call
../../gcc/gimple-fold.c:4354
0x8407db fold_stmt_1
../../gcc/gimple-fold.c:5019
0x1197021 lower_stmt
../../gcc/gimple-low.c:387
0x1197021 lower_sequence
../../gcc/gimple-low.c:217
0x1196e88 lower_gimple_bind
../../gcc/gimple-low.c:473
0x1197bb1 lower_function_body
../../gcc/gimple-low.c:110
0x1197bb1 execute
../../gcc/gimple-low.c:195
