https://gcc.gnu.org/bugzilla/show_bug.cgi?id=120127
Bug ID: 120127
Summary: ICE in GCC when calling destructor of undefined type
name in lambda (lookup_template_class crash)
Product: gcc
Version: 16.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: mario.rodriguezb1 at um dot es
Target Milestone: ---
ICE on this code:
```
#include <iostream>
struct Bomb{
};
int main(){
[[maybe_unused]] auto test = []( auto t){
return [t = std::move(t)](){t.~T();};
};
Bomb b;
auto test_with_bomb = test(std::move(b));
}
```
Stack dump
```
<source>:6:39: internal compiler error: in lookup_template_class, at
cp/pt.cc:10406
6 | return [t = std::move(t)](){t.~T();};
| ^~
0x2287465 diagnostic_context::diagnostic_impl(rich_location*,
diagnostic_metadata const*, diagnostic_option_id, char const*, __va_list_tag
(*) [1], diagnostic_t)
???:0
0x22989b6 internal_error(char const*, ...)
???:0
0x7d443e fancy_abort(char const*, int, char const*)
???:0
0x9ab456 tsubst(tree_node*, tree_node*, int, tree_node*)
???:0
0x9ab9bc tsubst(tree_node*, tree_node*, int, tree_node*)
???:0
0x9abc1c tsubst(tree_node*, tree_node*, int, tree_node*)
???:0
0x9b8831 tsubst_lambda_expr(tree_node*, tree_node*, int, tree_node*)
???:0
0x99f62f instantiate_decl(tree_node*, bool, bool)
???:0
0x894821 maybe_instantiate_decl(tree_node*)
???:0
0x895b67 mark_used(tree_node*, int)
???:0
0x806f93 build_op_call(tree_node*, vec<tree_node*, va_gc, vl_embed>**, int)
???:0
0x9d8b67 finish_call_expr(tree_node*, vec<tree_node*, va_gc, vl_embed>**, bool,
bool, int)
???:0
0x981ebd c_parse_file()
???:0
0xa8b739 c_common_parse_file()
???:0
```
To quickly reproduce, it happens in all version since 12.1, including 15.1 and
trunk
https://gcc.godbolt.org/z/rfs8qPMWv
