https://gcc.gnu.org/bugzilla/show_bug.cgi?id=114654
Bug ID: 114654
Summary: Alias template cannot be found
Product: gcc
Version: 13.2.1
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: fchelnokov at gmail dot com
Target Milestone: ---
This program
```
template <auto L, auto L2>
struct S {};
template<auto L>
using A = S<L, []{}>;
template<typename I>
using B = A<[]{}>;
using C = B<int>;
```
looks valid and it is accepted by Clang and MSVC, but GCC complains:
<source>:10:11: error: 'B' does not name a type
10 | using C = B<int>;
Online demo: https://gcc.godbolt.org/z/P4ozcd6oW
Related discussion: https://stackoverflow.com/q/78292459/7325599
