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