clang/test/SemaCXX/PR86790.cpp

   1 // RUN: %clang_cc1 -verify -std=c++20 -fsyntax-only %s
   2
   3 enum {A, S, D, F};
   4 int main() {
   5     using asdf = decltype(A);
   6     using enum asdf; // this line causes the crash
   7     return 0;
   8 }
   9
  10 namespace N1 {
  11     enum {A, S, D, F};
  12     constexpr struct T {
  13     using asdf = decltype(A);
  14     using enum asdf;
  15     } t;
  16
  17     static_assert(t.D == D);
  18     static_assert(T::S == S);
  19 }
  20
  21 namespace N2 {
  22     enum {A, S, D, F};
  23     constexpr struct T {
  24     struct {
  25         using asdf = decltype(A);
  26         using enum asdf;
  27     } inner;
  28     } t;
  29
  30     static_assert(t.inner.D == D);
  31     static_assert(t.D == D); // expected-error {{no member named 'D' in 'N2::T'}}
  32 }