https://gcc.gnu.org/bugzilla/show_bug.cgi?id=117324
Bug ID: 117324
Summary: internal compiler error: Segmentation fault in
break_out_target_exprs(tree_node*, bool)
Product: gcc
Version: unknown
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: yihan4845 at gmail dot com
Target Milestone: ---
Compiler Explorer: https://godbolt.org/z/869j3xz9o
The following program:
```cpp
template<typename = int>
struct ct1 {
friend void f(ct1, int = [](int p = [] { }) { return p; }(); ) {}
};
void test() {
f(ct1{});
}
```
will trigger segmentation fault for gcc trunk.
Stack dump:
```
0x287e175 diagnostic_context::diagnostic_impl(rich_location*,
diagnostic_metadata const*, diagnostic_option_id, char const*, __va_list_tag
(*) [1], diagnostic_t)
???:0
0x28945d5 internal_error(char const*, ...)
???:0
0xaa99c4 set_flags_from_callee(tree_node*)
???:0
0x176a8dc walk_tree_1(tree_node**, tree_node* (*)(tree_node**, int*, void*),
void*, hash_set<tree_node*, false, default_hash_traits<tree_node*> >*,
tree_node* (*)(tree_node**, int*, tree_node* (*)(tree_node**, int*, void*),
void*, hash_set<tree_node*, false, default_hash_traits<tree_node*> >*))
???:0
0xd43852 break_out_target_exprs(tree_node*, bool)
???:0
0xab019c convert_default_arg(tree_node*, tree_node*, tree_node*, int, int)
???:0
0xac095e build_new_function_call(tree_node*, vec<tree_node*, va_gc,
vl_embed>**, int)
???:0
0xd1c8f6 finish_call_expr(tree_node*, vec<tree_node*, va_gc, vl_embed>**, bool,
bool, int)
???:0
0xc9e57a c_parse_file()
???:0
0xdf7f99 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
```
