llvm-project/clang/test/Modules/cxx20-partition-redeclarations.cpp
Iain Sandoe bc2a6defc8 [C++20][Modules] Allow for redeclarations in partitions.
The existing provision is not sufficient, it did not allow for the cases
where an implementation partition includes the primary module interface,
or for the case that an exported interface partition is contains a decl
that is then implemented in a regular implementation unit.

It is somewhat unfortunate that we have to compare top level module names
to achieve this, since built modules are not necessarily available.

TODO: It might be useful to cache a hash of the primary module name if
this test proves to be a  significant load.

Differential Revision: https://reviews.llvm.org/D127624
2022-07-08 19:02:59 +01:00

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// RUN: rm -rf %t
// RUN: split-file %s %t
// RUN: cd %t
// RUN: %clang_cc1 -std=c++20 A-intf-part.cpp -emit-module-interface \
// RUN: -o A-PubPart.pcm
// RUN: %clang_cc1 -std=c++20 A-interface.cpp -emit-module-interface \
// RUN: -fmodule-file=A-PubPart.pcm -o A.pcm
// RUN: %clang_cc1 -std=c++20 A-impl-top.cpp -fsyntax-only -fmodule-file=A.pcm
// RUN: %clang_cc1 -std=c++20 A-impl-part.cpp -fsyntax-only -fmodule-file=A.pcm
// RUN: %clang_cc1 -std=c++20 A-impl-1.cpp -fsyntax-only -fmodule-file=A.pcm
// RUN: %clang_cc1 -std=c++20 A-impl-2.cpp -fsyntax-only -fmodule-file=A.pcm
//--- A-interface.cpp
export module A;
export import :PubPart;
export void do_something();
void helper1();
void helper3();
//--- A-intf-part.cpp
export module A:PubPart;
void helper2();
//--- A-impl-top.cpp
module A;
void do_something() {
helper1();
helper2();
helper3();
}
//--- A-impl-part.cpp
module A:Secret;
import A;
void helper3() {}
//--- A-impl-1.cpp
module A;
void helper1() {}
//--- A-impl-2.cpp
module A;
void helper2() {}