clang/test/Modules/redundant-template-default-arg2.cpp

   1 // RUN: rm -rf %t
   2 // RUN: mkdir %t
   3 // RUN: split-file %s %t
   4 //
   5 // RUN: %clang_cc1 -std=c++20 %t/foo.cppm -I%t -emit-module-interface -o %t/foo.pcm
   6 // RUN: %clang_cc1 -fprebuilt-module-path=%t -std=c++20 %t/use.cpp -fsyntax-only -verify
   7
   8 // RUN: %clang_cc1 -std=c++20 %t/foo.cppm -I%t -emit-reduced-module-interface -o %t/foo.pcm
   9 // RUN: %clang_cc1 -fprebuilt-module-path=%t -std=c++20 %t/use.cpp -fsyntax-only -verify
  10
  11 //--- foo.cppm
  12 export module foo;
  13 export template <typename T = int>
  14 T v;
  15
  16 export template <int T = 8>
  17 int v2;
  18
  19 export template <typename T>
  20 class my_array {};
  21
  22 export template <template <typename> typename C = my_array>
  23 int v3;
  24
  25 //--- use.cpp
  26 import foo;
  27 template <typename T = int>
  28 T v; // expected-error {{declaration of 'v' in the global module follows declaration in module foo}}
  29      // expected-note@foo.cppm:3 {{previous declaration is here}}
  30
  31 template <int T = 8>
  32 int v2; // expected-error {{declaration of 'v2' in the global module follows declaration in module foo}}
  33         // expected-note@foo.cppm:6 {{previous declaration is here}}
  34
  35 template <typename T>
  36 class my_array {}; // expected-error {{redefinition of 'my_array'}}
  37                    // expected-note@foo.cppm:9 {{previous definition is here}}
  38
  39 template <template <typename> typename C = my_array>
  40 int v3; // expected-error {{declaration of 'v3' in the global module follows declaration in module foo}}
  41         // expected-note@foo.cppm:12 {{previous declaration is here}}