1 /* Test operation of -Wbad-function-cast.  */
2 /* Based on gcc.dg/Wbad-function-cast-1.c.  */
3 
4 /* { dg-do compile } */
5 /* { dg-options "-Wbad-function-cast" } */
6 
7 int if1(void);
8 char if2(void);
9 long if3(void);
10 float rf1(void);
11 double rf2(void);
12 _Decimal32 rf3(void);
13 _Decimal64 rf4(void);
14 _Decimal128 rf5(void);
15 _Complex double cf(void);
16 
17 void
foo(void)18 foo(void)
19 {
20   /* Casts to void types are always OK.  */
21   (void)rf3();
22   (void)rf4();
23   (void)rf5();
24   (const void)rf3();
25   /* Casts to the same type or similar types are OK.  */
26   (_Decimal32)rf1();
27   (_Decimal64)rf2();
28   (_Decimal128)rf3();
29   (_Decimal128)rf4();
30   (_Decimal128)rf5();
31   (float)rf3();
32   (double)rf4();
33   (long double)rf5();
34    /* Casts to types with different TREE_CODE (which is how this
35      warning has been defined) are not OK, except for casts to void
36      types.  */
37   (_Decimal32)if1(); /* { dg-warning "cast from function call of type 'int' to non-matching type '_Decimal32'" } */
38   (_Decimal64)if2(); /* { dg-warning "cast from function call of type 'char' to non-matching type '_Decimal64'" } */
39   (_Decimal128)if3(); /* { dg-warning "cast from function call of type 'long int' to non-matching type '_Decimal128'" } */
40   (int)rf3(); /* { dg-warning "cast from function call of type '_Decimal32' to non-matching type 'int'" } */
41   (long)rf4(); /* { dg-warning "cast from function call of type '_Decimal64' to non-matching type 'long int'" } */
42   (long int)rf5(); /* { dg-warning "cast from function call of type '_Decimal128' to non-matching type 'long int'" } */
43   (_Decimal32)cf(); /* { dg-warning "cast from function call of type 'complex double' to non-matching type '_Decimal32'" } */
44 }
45