derek.holloway
7502bf64a4
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78 lines
2.8 KiB
C
78 lines
2.8 KiB
C
// RUN: %clang_cc1 -verify -std=c2y -DSTD1 %s
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// RUN: %clang_cc1 -verify -std=c2y -DSTD2 %s
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// RUN: %clang_cc1 -verify=gnu1 -std=gnu2y -DGNU1 %s
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// RUN: %clang_cc1 -verify -std=gnu2y -DGNU2 %s
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// RUN: %clang_cc1 -verify=gnu3 -std=gnu2y -DGNU3 %s
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// RUN: %clang_cc1 -verify -std=gnu2y -DGNU4 %s
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// RUN: %clang_cc1 -verify -std=gnu2y -DGNU5 %s
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// RUN: %clang_cc1 -verify -std=gnu2y -DGNU6 %s
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// RUN: %clang_cc1 -verify=gnu7 -std=gnu2y -DGNU7 %s
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// RUN: %clang_cc1 -triple x86_64-apple-darwin12 -verify -std=c2y -DDARWIN1 %s
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// RUN: %clang_cc1 -triple x86_64-pc-win32-mscv -verify -std=c2y -fms-compatibility -DMS1 %s
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// RUN: %clang_cc1 -triple x86_64-pc-win32-mscv -verify -std=c2y -fms-compatibility -DMS2 %s
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// RUN: %clang_cc1 -verify=invalid -std=c2y -DINVALID1 %s
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// RUN: %clang_cc1 -verify=invalid -std=c2y -DINVALID2 %s
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// expected-no-diagnostics
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/* WG14 N3623: Yes
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* Earthly Demon XV: Definition of Main
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*
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* This validates that we accept the standard type definitions of main or some
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* other implementation-defined type.
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*/
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typedef __WCHAR_TYPE__ wchar_t;
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// These are the signatures required by the standard.
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#if defined(STD1)
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int main(void) {}
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#elif defined(STD2)
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int main(int argc, char *argv[]) {}
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#endif
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// GNU extensions.
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#if defined(GNU1)
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void main(void) {} /* gnu1-warning {{return type of 'main' is not 'int'}}
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gnu1-note {{change return type to 'int'}}
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*/
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#elif defined(GNU2)
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const int main(void) {}
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#elif defined(GNU3)
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int main(...) {} /* gnu3-warning {{'main' is not allowed to be declared variadic}} */
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#elif defined(GNU4)
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int main(int, const char **) {}
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#elif defined(GNU5)
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int main(int, char const * const *) {}
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#elif defined(GNU6)
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int main(int, char * const *) {}
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#elif defined(GNU7)
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int main(int) {} /* gnu7-warning {{only one parameter on 'main' declaration}} */
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#endif
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// Darwin extensions.
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#if defined(DARWIN1)
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int main(int argc, char *argv[], char *environ[], char **undocumented) {}
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#endif
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// Microsoft extensions.
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#if defined(MS1)
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int wmain(int, wchar_t *[]) {}
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#elif defined(MS2)
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int wmain(int, wchar_t *[], wchar_t *[]) {}
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#endif
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// Invalid signatures.
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#if defined(INVALID1)
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inline int main(int, char *[]); /* invalid-error {{'main' is not allowed to be declared inline}} */
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#if !__is_target_os(darwin)
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// This test doesn't make sense on Darwin where four arguments are allowed.
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int main(int, char *[], char *[], float); /* invalid-error {{too many parameters (4) for 'main': must be 0, 2, or 3}} */
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#endif
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float main(int); /* invalid-error {{'main' must return 'int'}} */
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_Noreturn int main(int, char *[]); /* invalid-warning {{'main' is not allowed to be declared _Noreturn}}
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invalid-note {{remove '_Noreturn'}}
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*/
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#elif defined(INVALID2)
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static int main(void); /* invalid-warning {{'main' should not be declared static}} */
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#endif
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