https://gcc.gnu.org/bugzilla/show_bug.cgi?id=123143
Bug ID: 123143
Summary: internal compiler error: in lookup_member, at
cp/search.cc:1197
Product: gcc
Version: 16.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: mpolacek at gcc dot gnu.org
Target Milestone: ---
```
constexpr int x = 42;
struct S { static constexpr int x = 20; template <int N> static constexpr int a
= N; };
template<typename>
void
f ()
{
constexpr S s;
static_assert (s.template a<42> == 42);
static_assert (s.S::template a<42> == 42);
}
void
g ()
{
f<int>();
}
```
gives
g.C: In instantiation of ‘void f() [with <template-parameter-1-1> = int]’:
required from here
g.C:16:9:
16 | f<int>();
| ~~~~~~^~
g.C:10:32: internal compiler error: in lookup_member, at cp/search.cc:1197
10 | static_assert (s.S::template a<42> == 42);
| ~~~~~~~~~~~~~~^~~~~
0x3027ca8 internal_error(char const*, ...)
/home/mpolacek/src/forge/gcc/gcc/diagnostic-global-context.cc:787
0x3036579 fancy_abort(char const*, int, char const*)
/home/mpolacek/src/forge/gcc/gcc/diagnostics/context.cc:1805
0x870a5c lookup_member(tree_node*, tree_node*, int, bool, int,
access_failure_info*)
/home/mpolacek/src/forge/gcc/gcc/cp/search.cc:1197
0x6d37fa lookup_qualified_name(tree_node*, tree_node*, LOOK_want, bool)
/home/mpolacek/src/forge/gcc/gcc/cp/name-lookup.cc:7536
0x7fe4d8 tsubst_expr(tree_node*, tree_node*, int, tree_node*)
/home/mpolacek/src/forge/gcc/gcc/cp/pt.cc:22359
0x7f8a4c tsubst_expr(tree_node*, tree_node*, int, tree_node*)
/home/mpolacek/src/forge/gcc/gcc/cp/pt.cc:21432
0x7efab1 tsubst_stmt
/home/mpolacek/src/forge/gcc/gcc/cp/pt.cc:19912
0x7ea936 tsubst_stmt
/home/mpolacek/src/forge/gcc/gcc/cp/pt.cc:19314
0x7ee335 tsubst_stmt
/home/mpolacek/src/forge/gcc/gcc/cp/pt.cc:19735
0x8197d2 instantiate_body
/home/mpolacek/src/forge/gcc/gcc/cp/pt.cc:28329
0x81b262 instantiate_decl(tree_node*, bool, bool)
/home/mpolacek/src/forge/gcc/gcc/cp/pt.cc:28620
0x81b544 instantiate_pending_templates(int)
/home/mpolacek/src/forge/gcc/gcc/cp/pt.cc:28695
