clang/test/CXX/module/module.import/p2.cpp

   1 // RUN: rm -rf %t
   2 // RUN: mkdir -p %t
   3 // RUN: split-file %s %t
   4 // RUN: %clang_cc1 -std=c++20 %t/impl.cppm -emit-module-interface -o %t/M-impl.pcm
   5 // RUN: %clang_cc1 -std=c++20 %t/M.cppm -emit-module-interface -fprebuilt-module-path=%t -o %t/M.pcm
   6 // RUN: %clang_cc1 -std=c++20 %t/Use.cpp -fprebuilt-module-path=%t -verify -fsyntax-only
   7 // RUN: %clang_cc1 -std=c++20 %t/UseInPartA.cppm -fprebuilt-module-path=%t -verify -fsyntax-only
   8 // RUN: %clang_cc1 -std=c++20 %t/UseInAnotherModule.cppm -fprebuilt-module-path=%t -verify -fsyntax-only
   9 // RUN: %clang_cc1 -std=c++20 %t/Private.cppm -emit-module-interface -fprebuilt-module-path=%t -o %t/A.pcm
  10 // RUN: %clang_cc1 -std=c++20 %t/TryUseFromPrivate.cpp -fprebuilt-module-path=%t -verify -fsyntax-only
  11 // RUN: %clang_cc1 -std=c++20 %t/Global.cppm -emit-module-interface -fprebuilt-module-path=%t -o %t/C.pcm
  12 // RUN: %clang_cc1 -std=c++20 %t/UseGlobal.cpp -fprebuilt-module-path=%t -verify -fsyntax-only
  13
  14 //--- impl.cppm
  15 module M:impl;
  16 class A {};
  17
  18 //--- M.cppm
  19 export module M;
  20 import :impl;
  21 export A f();
  22
  23 //--- Use.cpp
  24 import M;
  25 void test() {
  26   A a; // expected-error {{unknown type name 'A'}}
  27 }
  28
  29 //--- UseInPartA.cppm
  30 export module M:partA;
  31 import :impl; // expected-warning {{importing an implementation partition unit in a module interface is not recommended.}}
  32 void test() {
  33   A a;
  34 }
  35
  36 //--- UseInAnotherModule.cppm
  37 export module B;
  38 import M;
  39 void test() {
  40   A a; // expected-error {{unknown type name 'A'}}
  41 }
  42
  43 //--- Private.cppm
  44 export module A;
  45 module :private;
  46
  47 class A {};
  48 void test() {
  49   A a;
  50 }
  51
  52 //--- TryUseFromPrivate.cpp
  53
  54 import A;
  55 void test() {
  56   A a; // expected-error {{unknown type name 'A'}}
  57 }
  58
  59 //--- Global.cppm
  60 module;
  61 class A{};
  62 export module C;
  63 void test() {
  64   A a;
  65 }
  66
  67 //--- UseGlobal.cpp
  68 import C;
  69 void test() {
  70   A a; // expected-error {{'A' must be declared before it is used}}
  71        // expected-note@Global.cppm:2 {{declaration here is not visible}}
  72 }