1 // RUN: %clang_cc1 -fsyntax-only -verify %s 2 3 extern int funcInt(int); 4 extern float funcFloat(float); 5 extern double funcDouble(double); 6 // figure out why "char *" doesn't work (with gcc, nothing to do with clang) 7 //extern void funcCharPtr(char *); 8 9 #define func(expr) \ 10 do { \ 11 typeof(expr) tmp; \ 12 if (__builtin_types_compatible_p(typeof(expr), int)) funcInt(tmp); \ 13 else if (__builtin_types_compatible_p(typeof(expr), float)) funcFloat(tmp); \ 14 else if (__builtin_types_compatible_p(typeof(expr), double)) funcDouble(tmp); \ 15 } while (0) 16 #define func_choose(expr) \ 17 __builtin_choose_expr(__builtin_types_compatible_p(typeof(expr), int), funcInt(expr), \ 18 __builtin_choose_expr(__builtin_types_compatible_p(typeof(expr), float), funcFloat(expr), \ 19 __builtin_choose_expr(__builtin_types_compatible_p(typeof(expr), double), funcDouble(expr), (void)0))) 20 21 static void test() 22 { 23 int a; 24 float b; 25 double d; 26 27 func(a); 28 func(b); 29 func(d); 30 a = func_choose(a); 31 b = func_choose(b); 32 d = func_choose(d); 33 34 int c; 35 struct xx { int a; } x, y; 36 37 c = __builtin_choose_expr(a+3-7, b, x); // expected-error{{'__builtin_choose_expr' requires a constant expression}} 38 c = __builtin_choose_expr(0, b, x); // expected-error{{assigning to 'int' from incompatible type 'struct xx'}} 39 c = __builtin_choose_expr(5+3-7, b, x); 40 y = __builtin_choose_expr(4+3-7, b, x); 41 42 } 43 44
