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[NFC] [C++20] [Modules] Add a test

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Add a test from https://github.com/llvm/llvm-project/issues/59999. It is
always good to have more tests.
This commit is contained in:
Chuanqi Xu 2023-05-23 14:31:05 +08:00
parent c6d3347e13
commit e74a4fe317
1 changed files with 44 additions and 0 deletions
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clang/test/Modules/pr59999.cppm Normal file
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// Test case from https://github.com/llvm/llvm-project/issues/59999
//
// RUN: rm -rf %t
// RUN: mkdir -p %t
// RUN: split-file %s %t
//
// RUN: %clang_cc1 -std=c++20 -triple %itanium_abi_triple %t/Module.cppm \
// RUN: -emit-module-interface -o %t/Module.pcm
// RUN: %clang_cc1 -std=c++20 -triple %itanium_abi_triple %t/Object.cppm \
// RUN: -fmodule-file=Module=%t/Module.pcm -emit-module-interface -o %t/Object.pcm
// RUN: %clang_cc1 -std=c++20 -triple %itanium_abi_triple %t/Object.pcm \
// RUN: -fmodule-file=Module=%t/Module.pcm -S -emit-llvm -o - | FileCheck %t/Object.cppm
//--- Module.cppm
export module Module;
export template <class ObjectType> bool ModuleRegister() { return true; };
export struct ModuleEntry {
static const bool bRegistered;
};
const bool ModuleEntry::bRegistered = ModuleRegister<ModuleEntry>();
//--- Object.cppm
export module Object;
import Module;
export template <class ObjectType> bool ObjectRegister() { return true; }
export struct NObject {
static const bool bRegistered;
};
export struct ObjectModuleEntry {
static const bool bRegistered;
};
// This function is also required for crash
const bool NObject::bRegistered = ObjectRegister<NObject>();
// One another function, that helps clang crash
const bool ObjectModuleEntry::bRegistered = ModuleRegister<ObjectModuleEntry>();
// Check that the LLVM IR is generated correctly instead of crashing.
// CHECK: define{{.*}}@_ZGIW6Object