diff --git a/clang/test/Modules/cxx20-10-2-ex2.cpp b/clang/test/Modules/cxx20-10-2-ex2.cpp new file mode 100644 --- /dev/null +++ b/clang/test/Modules/cxx20-10-2-ex2.cpp @@ -0,0 +1,42 @@ +// Based on C++20 10.2 example 2. + +// RUN: rm -rf %t +// RUN: mkdir -p %t +// RUN: split-file %s %t + +// RUN: %clang_cc1 -std=c++20 -emit-header-unit -I %t \ +// RUN: -xc++-user-header std-10-2-ex2-c.h -o %t/std-10-2-ex2-c.pcm + +// RUN: %clang_cc1 -std=c++20 -emit-module-interface %t/std-10-2-ex2-tu1.cpp \ +// RUN: -o %t/X.pcm + +// RUN: %clang_cc1 -std=c++20 -emit-module-interface %t/std-10-2-ex2-tu2.cpp \ +// RUN: -fmodule-file=%t/std-10-2-ex2-c.pcm -fmodule-file=%t/X.pcm \ +// RUN: -pedantic-errors -verify -o %t/M.pcm + +//--- std-10-2-ex2-b.h +int f(); + +//--- std-10-2-ex2-c.h +int g(); + +//--- std-10-2-ex2-tu1.cpp +export module X; +export int h(); + +//--- std-10-2-ex2-tu2.cpp +module; +#include "std-10-2-ex2-b.h" + +export module M; +import "std-10-2-ex2-c.h"; +import X; +export using ::f, ::g, ::h; // OK +struct S; // expected-note {{target of using declaration}} +export using ::S; // expected-error {{using declaration referring to 'S' with module linkage cannot be exported}} + +namespace N { +export int h(); +static int h(int); // expected-note {{target of using declaration}} +} // namespace N +export using N::h; // expected-error {{using declaration referring to 'h' with internal linkage cannot be exported}}