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jeremybenn |
/* Test diagnostics for arithmetic on void and function pointers.
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Test with -Wpointer-arith. */
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/* Origin: Joseph Myers <joseph@codesourcery.com> */
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/* { dg-do compile } */
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/* { dg-options "-Wpointer-arith" } */
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void *p;
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void (*f)(void);
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void
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g (void)
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{
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p + 0; /* { dg-warning "pointer of type 'void \\*' used in arithmetic" } */
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p + 1; /* { dg-warning "pointer of type 'void \\*' used in arithmetic" } */
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1 + p; /* { dg-warning "pointer of type 'void \\*' used in arithmetic" } */
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p - 0; /* { dg-warning "pointer of type 'void \\*' used in arithmetic" } */
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p - 1; /* { dg-warning "pointer of type 'void \\*' used in arithmetic" } */
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p += 0; /* { dg-warning "pointer of type 'void \\*' used in arithmetic" } */
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p += 1; /* { dg-warning "pointer of type 'void \\*' used in arithmetic" } */
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p -= 0; /* { dg-warning "pointer of type 'void \\*' used in arithmetic" } */
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p -= 1; /* { dg-warning "pointer of type 'void \\*' used in arithmetic" } */
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f + 0; /* { dg-warning "pointer to a function used in arithmetic" } */
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f + 1; /* { dg-warning "pointer to a function used in arithmetic" } */
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1 + f; /* { dg-warning "pointer to a function used in arithmetic" } */
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f - 0; /* { dg-warning "pointer to a function used in arithmetic" } */
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f - 1; /* { dg-warning "pointer to a function used in arithmetic" } */
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f += 0; /* { dg-warning "pointer to a function used in arithmetic" } */
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f += 1; /* { dg-warning "pointer to a function used in arithmetic" } */
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f -= 0; /* { dg-warning "pointer to a function used in arithmetic" } */
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f -= 1; /* { dg-warning "pointer to a function used in arithmetic" } */
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p[0]; /* { dg-warning "dereferencing 'void \\*' pointer" } */
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/* { dg-warning "pointer of type 'void \\*' used in arithmetic" "array 1" { target *-*-* } 33 } */
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0[p]; /* { dg-warning "dereferencing 'void \\*' pointer" } */
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/* { dg-warning "pointer of type 'void \\*' used in arithmetic" "array 1" { target *-*-* } 35 } */
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f[0]; /* { dg-error "subscripted value is pointer to function" } */
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0[f]; /* { dg-error "subscripted value is pointer to function" } */
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p - p; /* { dg-warning "pointer of type 'void \\*' used in subtraction" } */
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f - f; /* { dg-warning "pointer to a function used in subtraction" } */
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}
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