b37233a253
The following test fails to compile TU b.cpp because we are not making the transitively imported modules visible (per [module.import]/p7)
```
a.cppm:
export module a;
export int foo() {
return 42;
}
b.cppm:
export module b;
import a;
export int bar();
b.cpp:
module b;
int bar() {
return foo();
}
clang++ -c -std=c++2b -fmodule-output a.cppm
clang++ -c -std=c++2b -fmodule-output -fprebuilt-module-path=. b.cppm
clang++ -c -std=c++2b -fprebuilt-module-path=. b.cpp
b.cpp:4:12: error: declaration of 'foo' must be imported from module 'a' before it is required
return foo();
```
This is fixed by the following patch (which also addresses a FIXME in basic.def.odr/p6.cppm).
Differential Revision: https://reviews.llvm.org/D152746
124 lines
6.1 KiB
C++
124 lines
6.1 KiB
C++
// RUN: rm -rf %t
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// RUN: mkdir %t
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// RUN: split-file %s %t
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//
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// RUN: %clang_cc1 -std=c++20 -verify %t/global-vs-module.cppm
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// RUN: %clang_cc1 -std=c++20 -verify %t/global-vs-module.cppm -DEXPORT
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// RUN: %clang_cc1 -std=c++20 -verify %t/global-vs-module.cppm -DUSING
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//
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// RUN: %clang_cc1 -std=c++20 -emit-module-interface %t/global-vs-module.cppm -o %t/M.pcm -DNO_GLOBAL -DEXPORT
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// RUN: %clang_cc1 -std=c++20 -verify %t/module-vs-global.cpp -fmodule-file=M=%t/M.pcm
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//
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// Some of the following tests intentionally have no -verify in their RUN
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// lines; we are testing that those cases do not produce errors.
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//
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// RUN: %clang_cc1 -std=c++20 %t/module-vs-module.cpp -fmodule-file=M=%t/M.pcm -DMODULE_INTERFACE -verify
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// RUN: %clang_cc1 -std=c++20 %t/module-vs-module.cpp -fmodule-file=M=%t/M.pcm -DMODULE_INTERFACE -DNO_IMPORT
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//
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// RUN: %clang_cc1 -std=c++20 %t/module-vs-module.cpp -fmodule-file=M=%t/M.pcm -emit-module-interface -o %t/N.pcm -DMODULE_INTERFACE -DNO_ERRORS
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// RUN: %clang_cc1 -std=c++20 %t/module-vs-module.cpp -fmodule-file=M=%t/M.pcm -fmodule-file=N=%t/N.pcm -verify
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//
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// RUN: %clang_cc1 -std=c++20 %t/module-vs-module.cpp -fmodule-file=M=%t/M.pcm -fmodule-file=N=%t/N.pcm -DNO_IMPORT -verify
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//
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// RUN: %clang_cc1 -std=c++20 %t/module-vs-module.cpp -fmodule-file=M=%t/M.pcm -emit-module-interface -o %t/N-no-M.pcm -DMODULE_INTERFACE -DNO_ERRORS -DNO_IMPORT
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// RUN: %clang_cc1 -std=c++20 %t/module-vs-module.cpp -fmodule-file=M=%t/M.pcm -fmodule-file=N=%t/N-no-M.pcm -verify
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// RUN: %clang_cc1 -std=c++20 %t/module-vs-module.cpp -fmodule-file=N=%t/N-no-M.pcm -DNO_IMPORT
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//--- global-vs-module.cppm
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#ifndef NO_GLOBAL
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module;
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extern int var; // expected-note {{previous declaration is here}}
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int func(); // expected-note {{previous declaration is here}}
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struct str; // expected-note {{previous declaration is here}}
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using type = int;
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template<typename> extern int var_tpl; // expected-note {{previous declaration is here}}
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template<typename> int func_tpl(); // expected-note {{previous declaration is here}}
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template<typename> struct str_tpl; // expected-note {{previous declaration is here}}
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template<typename> using type_tpl = int; // expected-note {{previous declaration is here}}
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typedef int type;
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namespace ns { using ::func; }
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namespace ns_alias = ns;
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#endif
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export module M;
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#ifdef USING
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using ::var;
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using ::func;
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using ::str;
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using ::type;
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using ::var_tpl;
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using ::func_tpl;
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using ::str_tpl;
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using ::type_tpl;
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#endif
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#ifdef EXPORT
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export {
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#endif
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extern int var; // expected-error {{declaration of 'var' in module M follows declaration in the global module}}
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int func(); // expected-error {{declaration of 'func' in module M follows declaration in the global module}}
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struct str; // expected-error {{declaration of 'str' in module M follows declaration in the global module}}
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using type = int;
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template<typename> extern int var_tpl; // expected-error {{declaration of 'var_tpl' in module M follows declaration in the global module}}
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template<typename> int func_tpl(); // expected-error {{declaration of 'func_tpl' in module M follows declaration in the global module}}
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template<typename> struct str_tpl; // expected-error {{declaration of 'str_tpl' in module M follows declaration in the global module}}
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template<typename> using type_tpl = int; // expected-error {{declaration of 'type_tpl' in module M follows declaration in the global module}}
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typedef int type;
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namespace ns { using ::func; }
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namespace ns_alias = ns;
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#ifdef EXPORT
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}
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#endif
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//--- module-vs-global.cpp
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import M;
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extern int var; // expected-error {{declaration of 'var' in the global module follows declaration in module M}} expected-note@global-vs-module.cppm:35 {{previous}}
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int func(); // expected-error {{declaration of 'func' in the global module follows declaration in module M}} expected-note@global-vs-module.cppm:36 {{previous}}
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struct str; // expected-error {{declaration of 'str' in the global module follows declaration in module M}} expected-note@global-vs-module.cppm:37 {{previous}}
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using type = int;
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template<typename> extern int var_tpl; // expected-error {{declaration of 'var_tpl' in the global module follows declaration in module M}} expected-note@global-vs-module.cppm:40 {{previous}}
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template<typename> int func_tpl(); // expected-error {{declaration of 'func_tpl' in the global module follows declaration in module M}} expected-note@global-vs-module.cppm:41 {{previous}}
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template<typename> struct str_tpl; // expected-error {{declaration of 'str_tpl' in the global module follows declaration in module M}} expected-note@global-vs-module.cppm:42 {{previous}}
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template<typename> using type_tpl = int; // expected-error {{declaration of 'type_tpl' in the global module follows declaration in module M}} expected-note@global-vs-module.cppm:43 {{previous}}
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typedef int type;
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namespace ns { using ::func; }
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namespace ns_alias = ns;
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//--- module-vs-module.cpp
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#ifdef MODULE_INTERFACE
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export module N;
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#else
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module N;
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#endif
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#ifndef NO_IMPORT
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import M;
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#endif
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#ifndef NO_ERRORS
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extern int var; // expected-error {{declaration of 'var' in module N follows declaration in module M}} expected-note@global-vs-module.cppm:35 {{previous}}
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int func(); // expected-error {{declaration of 'func' in module N follows declaration in module M}} expected-note@global-vs-module.cppm:36 {{previous}}
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struct str; // expected-error {{declaration of 'str' in module N follows declaration in module M}} expected-note@global-vs-module.cppm:37 {{previous}}
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using type = int;
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template<typename> extern int var_tpl; // expected-error {{declaration of 'var_tpl' in module N follows declaration in module M}} expected-note@global-vs-module.cppm:40 {{previous}}
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template<typename> int func_tpl(); // expected-error {{declaration of 'func_tpl' in module N follows declaration in module M}} expected-note@global-vs-module.cppm:41 {{previous}}
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template<typename> struct str_tpl; // expected-error {{declaration of 'str_tpl' in module N follows declaration in module M}} expected-note@global-vs-module.cppm:42 {{previous}}
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template<typename> using type_tpl = int; // expected-error {{declaration of 'type_tpl' in module N follows declaration in module M}} expected-note@global-vs-module.cppm:43 {{previous}}
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typedef int type;
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namespace ns { using ::func; }
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namespace ns_alias = ns;
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#endif
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