https://gcc.gnu.org/bugzilla/show_bug.cgi?id=122465
Bug ID: 122465
Summary: ICE: segmentation fault in c_parse_file() instead of
normal exit when parsing malformed C++ for loop with
register size_t
Product: gcc
Version: 16.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: qingren2hxb at gmail dot com
Target Milestone: ---
https://godbolt.org/z/YKaeEKzd9
=====================================
#include <coroutine>
#include <cassert>
int main()
{
coroutines:
constexpr size_t steps_to_resume_tested_coro{};
threads:
for(register size_t i={i}:steps_to_resume_tested_coro){
asm("test $-1,%q[i]\t\n");
extern inline _Thread_local auto
some_thread_func->{return i;};
}
}
=====================================
# gcc -x c++ -fcoroutines
<source>: In function 'int main()':
<source>:8:23: error: 'size_t' does not name a type
8 | constexpr size_t steps_to_resume_tested_coro{};
| ^~~~~~
<source>:3:1: note: 'size_t' is defined in header '<cstddef>'; this is probably
fixable by adding '#include <cstddef>'
2 | #include <cassert>
+++ |+#include <cstddef>
3 |
<source>:10:34: error: 'size_t' does not name a type
10 | for(register size_t
i={i}:steps_to_resume_tested_coro){
| ^~~~~~
<source>:10:34: note: 'size_t' is defined in header '<cstddef>'; this is
probably fixable by adding '#include <cstddef>'
<source>:10:46: internal compiler error: Segmentation fault
10 | for(register size_t
i={i}:steps_to_resume_tested_coro){
| ^
0x28fb988 diagnostics::context::diagnostic_impl(rich_location*,
diagnostics::metadata const*, diagnostics::option_id, char const*,
__va_list_tag (*) [1], diagnostics::kind)
???:0
0x28f077b internal_error(char const*, ...)
???:0
0xd44da3 c_parse_file()
???:0
0xeb5839 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
