1 // RUN: %clang_cc1 %s -fsyntax-only -Wno-unused-value -Wbad-function-cast -triple x86_64-unknown-unknown -verify 2 // rdar://9103192 3 4 void vf(void); 5 int if1(void); 6 char if2(void); 7 long if3(void); 8 float rf1(void); 9 double rf2(void); 10 _Complex double cf(void); 11 enum e { E1 } ef(void); 12 _Bool bf(void); 13 char *pf1(void); 14 int *pf2(void); 15 16 void 17 foo(void) 18 { 19 /* Casts to void types are always OK. */ 20 (void)vf(); 21 (void)if1(); 22 (void)cf(); 23 (const void)bf(); 24 /* Casts to the same type or similar types are OK. */ 25 (int)if1(); 26 (long)if2(); 27 (char)if3(); 28 (float)rf1(); 29 (long double)rf2(); 30 (_Complex float)cf(); 31 (enum f { F1 })ef(); 32 (_Bool)bf(); 33 (void *)pf1(); 34 (char *)pf2(); 35 /* All following casts issue warning */ 36 (float)if1(); /* expected-warning {{cast from function call of type 'int' to non-matching type 'float'}} */ 37 (double)if2(); /* expected-warning {{cast from function call of type 'char' to non-matching type 'double'}} */ 38 (_Bool)if3(); /* expected-warning {{cast from function call of type 'long' to non-matching type '_Bool'}} */ 39 (int)rf1(); /* expected-warning {{cast from function call of type 'float' to non-matching type 'int'}} */ 40 (long)rf2(); /* expected-warning {{cast from function call of type 'double' to non-matching type 'long'}} */ 41 (double)cf(); /* expected-warning {{cast from function call of type '_Complex double' to non-matching type 'double'}} */ 42 (int)ef(); /* expected-warning {{cast from function call of type 'enum e' to non-matching type 'int'}} */ 43 (int)bf(); /* expected-warning {{cast from function call of type '_Bool' to non-matching type 'int'}} */ 44 (__SIZE_TYPE__)pf1(); /* expected-warning {{cast from function call of type 'char *' to non-matching type 'unsigned long'}} */ 45 (__PTRDIFF_TYPE__)pf2(); /* expected-warning {{cast from function call of type 'int *' to non-matching type 'long'}} */ 46 } 47 48