llvm-project

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// RUN: %clang_cc1 %s -std=c11 -fsyntax-only -verify=compat -Wpre-c11-compat
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// RUN: %clang_cc1 %s -std=c99 -fsyntax-only -verify=ext -pedantic
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// RUN: %clang_cc1 %s -std=c11 -fsyntax-only -verify=good
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// RUN: %clang_cc1 -x c++ %s -fsyntax-only -verify=ext -pedantic
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// good-no-diagnostics
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extern _Noreturn void exit(int); /* compat-warning {{'_Noreturn' is incompatible with C standards before C11}}
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                                    ext-warning {{'_Noreturn' is a C11 extension}}
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                                  */
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void func(void) {
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  static _Thread_local int tl;   /* compat-warning {{'_Thread_local' is incompatible with C standards before C11}}
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                                    ext-warning {{'_Thread_local' is a C11 extension}}
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                                  */
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  _Alignas(8) char c;            /* compat-warning {{'_Alignas' is incompatible with C standards before C11}}
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                                    ext-warning {{'_Alignas' is a C11 extension}}
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                                  */
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  _Atomic int i1;                /* compat-warning {{'_Atomic' is incompatible with C standards before C11}}
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                                    ext-warning {{'_Atomic' is a C11 extension}}
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                                  */
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  _Atomic(int) i2;               /* compat-warning {{'_Atomic' is incompatible with C standards before C11}}
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                                    ext-warning {{'_Atomic' is a C11 extension}}
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                                  */
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  _Static_assert(1, "");         /* compat-warning {{'_Static_assert' is incompatible with C standards before C11}}
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                                    ext-warning {{'_Static_assert' is a C11 extension}}
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                                  */
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  (void)_Generic(1, int : 1);    /* compat-warning {{'_Generic' is incompatible with C standards before C11}}
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                                    ext-warning {{'_Generic' is a C11 extension}}
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                                  */
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  (void)_Alignof(int);           /* compat-warning {{'_Alignof' is incompatible with C standards before C11}}
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                                    ext-warning {{'_Alignof' is a C11 extension}}
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                                  */
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}
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