| 1 | // RUN: %clang_cc1 -std=gnu89 -fsyntax-only -verify %s |
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| 2 | // RUN: %clang_cc1 -fsyntax-only -verify %s |
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| 3 | |
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| 4 | #if __STDC_VERSION__ >= 199901 |
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| 5 | #define GNU_INLINE __attribute((__gnu_inline__)) |
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| 6 | #else |
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| 7 | #define GNU_INLINE |
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| 8 | #endif |
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| 9 | |
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| 10 | // PR5253 |
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| 11 | // rdar://9559708 (same extension in C99 mode) |
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| 12 | // GNU Extension: check that we can redefine an extern inline function |
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| 13 | GNU_INLINE extern inline int f(int a) {return a;} |
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| 14 | int f(int b) {return b;} // expected-note{{previous definition is here}} |
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| 15 | // And now check that we can't redefine a normal function |
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| 16 | int f(int c) {return c;} // expected-error{{redefinition of 'f'}} |
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| 17 | |
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| 18 | // Check that we can redefine an extern inline function as a static function |
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| 19 | GNU_INLINE extern inline int g(int a) {return a;} |
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| 20 | static int g(int b) {return b;} |
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| 21 | |
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| 22 | // Check that we ensure the types of the two definitions are the same |
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| 23 | GNU_INLINE extern inline int h(int a) {return a;} // expected-note{{previous definition is here}} |
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| 24 | int h(short b) {return b;} // expected-error{{conflicting types for 'h'}} |
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| 25 | |
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