forked from OSchip/llvm-project
118 lines
3.5 KiB
C++
118 lines
3.5 KiB
C++
// Tests that redefinitions in different TUs could be merged correctly and the
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// redefinitions in the same TUs could be merged diagnosticed correctly.
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//
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// 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 -I%t %t/normal.cpp -verify -fsyntax-only
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// RUN: %clang_cc1 -std=c++20 -I%t %t/M1.cppm -verify -fsyntax-only
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// RUN: %clang_cc1 -std=c++20 -I%t %t/M2.cppm -verify -fsyntax-only
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// RUN: %clang_cc1 -std=c++20 -I%t %t/M3.cppm -verify -fsyntax-only
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// RUN: %clang_cc1 -std=c++20 -I%t %t/M.cppm -emit-module-interface -o %t/M.pcm
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// RUN: %clang_cc1 -std=c++20 -fprebuilt-module-path=%t %t/Use1.cpp -verify -fsyntax-only
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// RUN: %clang_cc1 -std=c++20 -fprebuilt-module-path=%t %t/Use2.cpp -verify -fsyntax-only
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//
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//--- foo.h
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#ifndef FOO
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#define FOO
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inline void func() {}
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template <typename T>
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T templ_func(T t) { return t; }
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struct S {};
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template <class C>
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struct T { C c; };
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inline int v = 43;
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#endif
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// If we copy foo.h directly, there are other warnings.
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//--- redef.h
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#ifndef REDEF
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#define REDEF
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inline void func() {}
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template <typename T>
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T templ_func(T t) { return t; }
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struct S {};
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template <class C>
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struct T { C c; };
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inline int v = 43;
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#endif
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//--- normal.cpp
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#include "foo.h"
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#include "redef.h"
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// expected-error@* {{redefinition of 'func'}}
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// expected-error@* {{redefinition of 'templ_func'}}
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// expected-error@* {{redefinition of 'S'}}
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// expected-error@* {{redefinition of 'T'}}
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// expected-error@* {{redefinition of 'v'}}
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// expected-note@* 1+{{previous definition is here}}
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//--- M1.cppm
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// These declarations are in the same TU. The compiler should complain.
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module;
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#include "foo.h"
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#include "redef.h"
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export module M1;
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// expected-error@* {{redefinition of 'func'}}
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// expected-error@* {{redefinition of 'templ_func'}}
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// expected-error@* {{redefinition of 'S'}}
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// expected-error@* {{redefinition of 'T'}}
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// expected-error@* {{redefinition of 'v'}}
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// expected-note@* 1+{{previous definition is here}}
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//--- M2.cppm
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// These declarations are in the same TU and the redefinitions are in the named modules.
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// The compiler should complain.
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module;
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#include "foo.h"
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export module M2;
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#include "redef.h"
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// FIXME: The diagnostic message looks not so good.
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//
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// expected-error@* {{declaration of 'func' in module M2 follows declaration in the global module}}
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// expected-error@* {{declaration of 'templ_func' in module M2 follows declaration in the global module}}
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// expected-error@* {{redefinition of 'S'}}
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// expected-error@* {{redefinition of 'T'}}
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// expected-error@* {{declaration of 'v' in module M2 follows declaration in the global module}}
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// expected-note@* 1+{{previous definition is here}}
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// expected-note@* 1+{{previous declaration is here}}
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//--- M3.cppm
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// These declarations are in the same TU. The compiler should complain.
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export module M3;
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#include "foo.h"
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#include "redef.h"
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// expected-error@* {{redefinition of 'func'}}
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// expected-error@* {{redefinition of 'templ_func'}}
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// expected-error@* {{redefinition of 'S'}}
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// expected-error@* {{redefinition of 'T'}}
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// expected-error@* {{redefinition of 'v'}}
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// expected-note@* 1+{{previous definition is here}}
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//--- M.cppm
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module;
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#include "foo.h"
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export module M;
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export using ::func;
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export using ::templ_func;
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export using ::S;
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export using ::T;
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export using ::v;
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//--- Use1.cpp
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// These declarations are not in the same TU. The compiler shouldn't complain.
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// expected-no-diagnostics
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#include "foo.h"
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import M;
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//--- Use2.cpp
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// These declarations are not in the same TU. The compiler shouldn't complain.
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// expected-no-diagnostics
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import M;
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#include "foo.h"
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