https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89944
Bug ID: 89944
Summary: [7/8/9 Regression] ICE in mark_jump_label_1, at
jump.c:1152
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: ---
Gives an ICE down to gcc-4.6, gcc-4.5 (and others) accept it :
$ cat z1.c
void buf ()
{
__builtin_setjmp (buf);
__builtin_longjmp (buf, 1);
}
$ gcc-9-20190331 -c z1.c -O0
$
$ gcc-9-20190331 -c z1.c -O2
during RTL pass: cse1
z1.c: In function 'buf':
z1.c:5:1: internal compiler error: in mark_jump_label_1, at jump.c:1152
5 | }
| ^
0x902146 mark_jump_label_1
../../gcc/jump.c:1152
0x901ec9 mark_jump_label_1
../../gcc/jump.c:1212
0x90243d mark_all_labels
../../gcc/jump.c:305
0x90243d rebuild_jump_labels_1
../../gcc/jump.c:74
0x115faa1 rest_of_handle_cse
../../gcc/cse.c:7687
0x115faa1 execute
../../gcc/cse.c:7721
