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jeremybenn |
/* Conversions between function and object pointers are not permitted
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in any version of ISO C, even with casts, except for the special
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case of converting a null pointer constant to function pointer
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type. Likewise, comparisons between function and object pointers
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are not permitted. PR c/11234. */
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/* Origin: Joseph Myers <jsm@polyomino.org.uk> */
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/* { dg-do compile } */
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/* { dg-options "-pedantic" } */
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void f(void);
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void *v1 = f; /* { dg-warning "12:pointer" "bad conversion" } */
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void *v2 = &f; /* { dg-warning "12:pointer" "bad conversion" } */
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void *v3 = (void *)f; /* { dg-warning "12:pointer" "bad conversion" } */
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void *v4 = (void *)&f; /* { dg-warning "12:pointer" "bad conversion" } */
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void *v5;
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char *c1 = f; /* { dg-warning "12:pointer" "bad conversion" } */
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char *c2 = &f; /* { dg-warning "12:pointer" "bad conversion" } */
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char *c3 = (char *)f; /* { dg-warning "12:pointer" "bad conversion" } */
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char *c4 = (char *)&f; /* { dg-warning "12:pointer" "bad conversion" } */
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char *c5;
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void (*fp)(void);
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int a;
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void
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g(void)
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{
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v5 = f; /* { dg-warning "6:pointer" "bad conversion" } */
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v5 = &f; /* { dg-warning "6:pointer" "bad conversion" } */
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v5 = (void *)f; /* { dg-warning "8:pointer" "bad conversion" } */
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v5 = (void *)&f; /* { dg-warning "8:pointer" "bad conversion" } */
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c5 = f; /* { dg-warning "6:pointer" "bad conversion" } */
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c5 = &f; /* { dg-warning "6:pointer" "bad conversion" } */
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c5 = (char *)f; /* { dg-warning "8:pointer" "bad conversion" } */
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c5 = (char *)&f; /* { dg-warning "8:pointer" "bad conversion" } */
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fp = v5; /* { dg-warning "6:pointer" "bad conversion" } */
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fp = c5; /* { dg-warning "6:pointer" "bad conversion" } */
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fp = (void (*)(void))v5; /* { dg-warning "8:pointer" "bad conversion" } */
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fp = (void (*)(void))c5; /* { dg-warning "8:pointer" "bad conversion" } */
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(a ? f : v3); /* { dg-warning "10:pointer" "bad conversion" } */
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(a ? v2 : fp); /* { dg-warning "11:pointer" "bad conversion" } */
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/* The following are OK. */
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fp = 0;
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fp = (void *)0;
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fp = 0L;
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fp = (void (*)(void))0;
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fp = (void (*)(void))(void *)0;
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(a ? f : 0);
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(a ? f : (void *)0);
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(a ? (void *)0 : fp);
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(a ? 0 : fp);
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}
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/* The following are OK. */
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void (*fp2)(void) = 0;
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void (*fp3)(void) = (void *)0;
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