ea321392eb
This PR is 2nd part of [P1857R3](https://github.com/llvm/llvm-project/pull/107168) implementation, and mainly implement the restriction `A module directive may only appear as the first preprocessing tokens in a file (excluding the global module fragment.)`: [cpp.pre](https://eel.is/c++draft/cpp.pre): ``` module-file: pp-global-module-fragment[opt] pp-module group[opt] pp-private-module-fragment[opt] ``` We also refine tests use `split-file` instead of conditional macro. Signed-off-by: yronglin <yronglin777@gmail.com>
129 lines
4.8 KiB
C++
129 lines
4.8 KiB
C++
// RUN: rm -rf %t
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// RUN: split-file %s %t
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// RUN: %clang_cc1 -std=c++2a -verify %t/M.cppm
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// RUN: %clang_cc1 -std=c++2a -verify %t/NoGlobalFrag.cppm
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// RUN: %clang_cc1 -std=c++2a -verify %t/NoModuleDecl.cppm
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// RUN: %clang_cc1 -std=c++2a -verify %t/NoPrivateFrag.cppm
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// RUN: %clang_cc1 -std=c++2a -verify %t/NoModuleDeclAndNoPrivateFrag.cppm
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// RUN: %clang_cc1 -std=c++2a -verify %t/NoGlobalFragAndNoPrivateFrag.cppm
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// RUN: %clang_cc1 -std=c++2a -verify %t/NoGlobalFragAndNoModuleDecl.cppm
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// RUN: %clang_cc1 -std=c++2a -verify %t/NoGlobalFragAndNoModuleDeclAndNoPrivateFrag.cppm
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// RUN: %clang_cc1 -std=c++2a -verify %t/ExportFrags.cppm
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//--- M.cppm
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module;
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extern int a; // #a1
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export module Foo;
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int a; // expected-error {{declaration of 'a' in module Foo follows declaration in the global module}}
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// expected-note@#a1 {{previous decl}}
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extern int b;
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module; // expected-error {{'module;' introducing a global module fragment can appear only at the start of the translation unit}}
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module :private; // #priv-frag
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int b; // ok
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module :private; // expected-error {{private module fragment redefined}}
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// expected-note@#priv-frag {{previous definition is here}}
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//--- NoGlobalFrag.cppm
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extern int a; // #a1
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export module Foo; // expected-error {{module declaration must occur at the start of the translation unit}}
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// expected-note@-2 {{add 'module;' to the start of the file to introduce a global module fragment}}
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// expected-error@#a2 {{declaration of 'a' in module Foo follows declaration in the global module}}
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// expected-note@#a1 {{previous decl}}
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int a; // #a2
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extern int b;
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module; // expected-error {{'module;' introducing a global module fragment can appear only at the start of the translation unit}}
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module :private; // #priv-frag
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int b; // ok
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module :private; // expected-error {{private module fragment redefined}}
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// expected-note@#priv-frag {{previous definition is here}}
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//--- NoModuleDecl.cppm
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module; // expected-error {{missing 'module' declaration at end of global module fragment introduced here}}
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extern int a; // #a1
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int a; // #a2
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extern int b;
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module; // expected-error {{'module;' introducing a global module fragment can appear only at the start of the translation unit}}
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module :private; // expected-error {{private module fragment declaration with no preceding module declaration}}
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int b; // ok
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//--- NoPrivateFrag.cppm
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module;
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extern int a; // #a1
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export module Foo;
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// expected-error@#a2 {{declaration of 'a' in module Foo follows declaration in the global module}}
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// expected-note@#a1 {{previous decl}}
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int a; // #a2
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extern int b;
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module; // expected-error {{'module;' introducing a global module fragment can appear only at the start of the translation unit}}
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int b; // ok
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//--- NoModuleDeclAndNoPrivateFrag.cppm
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module; // expected-error {{missing 'module' declaration at end of global module fragment introduced here}}
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extern int a; // #a1
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int a; // #a2
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extern int b;
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module; // expected-error {{'module;' introducing a global module fragment can appear only at the start of the translation unit}}
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int b; // ok
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//--- NoGlobalFragAndNoPrivateFrag.cppm
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extern int a; // #a1
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export module Foo; // expected-error {{module declaration must occur at the start of the translation unit}}
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// expected-note@1 {{add 'module;' to the start of the file to introduce a global module fragment}}
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// expected-error@#a2 {{declaration of 'a' in module Foo follows declaration in the global module}}
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// expected-note@#a1 {{previous decl}}
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int a; // #a2
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extern int b;
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module; // expected-error {{'module;' introducing a global module fragment can appear only at the start of the translation unit}}
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int b; // ok
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//--- NoGlobalFragAndNoModuleDecl.cppm
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extern int a; // #a1
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int a; // #a2
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extern int b;
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module; // expected-error {{'module;' introducing a global module fragment can appear only at the start of the translation unit}}
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module :private; // #priv-frag
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// expected-error@-1 {{private module fragment declaration with no preceding module declaration}}
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int b; // ok
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//--- NoGlobalFragAndNoModuleDeclAndNoPrivateFrag.cppm
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extern int a; // #a1
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int a; // #a2
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extern int b;
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module; // expected-error {{'module;' introducing a global module fragment can appear only at the start of the translation unit}}
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int b; // ok
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//--- ExportFrags.cppm
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export module; // expected-error {{global module fragment cannot be exported}}
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extern int a; // #a1
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export module Foo;
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// expected-error@#a2 {{declaration of 'a' in module Foo follows declaration in the global module}}
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// expected-note@#a1 {{previous decl}}
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int a; // #a2
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extern int b;
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module; // expected-error {{'module;' introducing a global module fragment can appear only at the start of the translation unit}}
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module :private; // #priv-frag
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int b; // ok
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module :private; // expected-error {{private module fragment redefined}}
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// expected-note@#priv-frag {{previous definition is here}}
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