2b5d1fb889
This patch covers [CWG2811](https://cplusplus.github.io/CWG/issues/2811.html) "Clarify "use" of main", basically adding a test for `-Wmain`, focusing on usages of `main` in unevaluated contexts. To my understanding, the diagnostic message is based on the wording, so I updated it based on the new wording. I also replaces "ISO C++ requires" with a phrasing that explicitly says "extension".
25 lines
918 B
C++
25 lines
918 B
C++
// RUN: %clang_cc1 -verify %s -pedantic-errors
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// RUN: %clang_cc1 -verify %s -pedantic-errors -DINLINE
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// RUN: %clang_cc1 -verify %s -pedantic-errors -DSTATIC
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// RUN: %clang_cc1 -verify %s -pedantic-errors -std=c++11 -DCONSTEXPR
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// RUN: %clang_cc1 -verify %s -std=c++11 -DDELETED
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#if INLINE
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inline // expected-error {{'main' is not allowed to be declared inline}}
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#elif STATIC
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static // expected-error {{'main' is not allowed to be declared static}}
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#elif CONSTEXPR
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constexpr // expected-error {{'main' is not allowed to be declared constexpr}}
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#endif
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int main(int argc, char **argv)
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#if DELETED
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= delete; // expected-error {{'main' is not allowed to be deleted}}
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#else
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{
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int (*pmain)(int, char**) = &main; // expected-error {{referring to 'main' within an expression is a Clang extension}}
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if (argc)
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main(0, 0); // expected-error {{referring to 'main' within an expression is a Clang extension}}
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}
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#endif
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