https://gcc.gnu.org/bugzilla/show_bug.cgi?id=121421
Bug ID: 121421
Summary: [ICE] internal compiler error: Segmentation fault
Product: gcc
Version: 16.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c
Assignee: unassigned at gcc dot gnu.org
Reporter: njuwy at smail dot nju.edu.cn
Target Milestone: ---
Compiler Explorer: https://godbolt.org/z/4a4aj7PoG
The crash triggering program (compile with `gcc-16 -O0`):
```
void main(void)
{
void __GIMPLE b()
}
```
The crash output:
```
<source>: In function 'main':
<source>:3:10: error: '__GIMPLE' only valid with '-fgimple'
3 | void __GIMPLE b()
| ^~~~~~~~
<source>: In function 'b':
<source>:4:1: error: expected declaration specifiers before '}' token
4 | }
| ^
<source>:5: error: expected '{' at end of input
<source>:4:1: internal compiler error: Segmentation fault
4 | }
| ^
0x254c505 diagnostics::context::diagnostic_impl(rich_location*,
diagnostics::metadata const*, diagnostics::option_id, char const*,
__va_list_tag (*) [1], diagnostics::kind)
???:0
0x2541da6 internal_error(char const*, ...)
???:0
0xa2a06e add_stmt(tree_node*)
???:0
0xace1de c_parse_file()
???:0
0xb500f9 c_common_parse_file()
???:0
Please submit a full bug report, with preprocessed source (by using
-freport-bug).
Please include the complete backtrace with any bug report.
See <https://gcc.gnu.org/bugs/> for instructions.
Compiler returned: 1
```
