https://gcc.gnu.org/bugzilla/show_bug.cgi?id=95465
Bug ID: 95465
Summary: [8/9/10/11 Regression] ICE on jump into a statement
expression
Product: gcc
Version: 10.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: jakub at gcc dot gnu.org
Target Milestone: ---
void
foo ()
{
sizeof (({ label: 0; }));
goto label;
}
ICEs with C++:
during GIMPLE pass: cfg
rh1842304.C: In function ‘void foo()’:
rh1842304.C:2:1: internal compiler error: Segmentation fault
2 | foo ()
| ^~~
0x15fc130 crash_signal
../../gcc/toplev.c:328
0x1658942 main_block_label
../../gcc/tree-cfg.c:1455
0x16590e4 cleanup_dead_labels()
../../gcc/tree-cfg.c:1639
but with C is rejected:
rh1842304.C: In function ‘foo’:
rh1842304.C:5:3: error: jump into statement expression
5 | goto label;
| ^~~~
rh1842304.C:4:14: note: label ‘label’ defined here
4 | sizeof (({ label: 0; }));
| ^~~~~
Used to be accepted by both C and C++ in GCC 3.4, but already r105000 ICEs in
C++ and rejects it in C.
