clang/test/CXX/basic/basic.link/p10-ex2.cpp

   1 // RUN: rm -rf %t
   2 // RUN: mkdir -p %t
   3 // RUN: split-file %s %t
   4 // RUN: cd %t
   5 //
   6 // RUN: %clang_cc1 -std=c++20 M.cpp -fsyntax-only -DTEST_INTERFACE -verify
   7 // RUN: %clang_cc1 -std=c++20 M.cpp -emit-module-interface -o M.pcm
   8 // RUN: %clang_cc1 -std=c++20 useM.cpp -fsyntax-only -fmodule-file=M=M.pcm -verify
   9
  10 //--- decls.h
  11 int f(); // #1, attached to the global module
  12 int g(); // #2, attached to the global module
  13
  14 //--- M.cpp
  15 module;
  16 #include "decls.h"
  17 export module M;
  18 export using ::f; // OK, does not declare an entity, exports #1
  19 #if TEST_INTERFACE
  20 // error: matches #2, but attached to M
  21 int g(); // expected-error {{declaration of 'g' in module M follows declaration in the global module}}
  22 // expected-note@decls.h:2 {{previous declaration is here}}
  23 #endif
  24 export int h(); // #3
  25 export int k(); // #4
  26
  27 //--- useM.cpp
  28 import M;
  29 // error: matches #3
  30 static int h(); // expected-error {{static declaration of 'h' follows non-static declaration}}
  31 // expected-note@M.cpp:10 {{previous declaration is here}}
  32
  33 // error: matches #4
  34 int k(); // expected-error {{declaration of 'k' in the global module follows declaration in module M}}
  35 // expected-note@M.cpp:11 {{previous declaration is here}}