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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
foo(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