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111
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1 /* Test diagnostics for bad or doubtful casts. Test with
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2 -pedantic-errors. */
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3 /* Origin: Joseph Myers <joseph@codesourcery.com> */
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4 /* { dg-do compile } */
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5 /* { dg-options "-std=gnu99 -pedantic-errors" } */
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6
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7 struct s { int a; } sv;
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8 union u { int a; } uv;
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9 int i;
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10 long l;
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11 char c;
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12 void *p;
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13 float fv;
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14
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15 void
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16 f (void)
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17 {
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18 (int []) p; /* { dg-error "cast specifies array type" } */
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19 (int ()) p; /* { dg-error "cast specifies function type" } */
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20 (struct s) sv; /* { dg-error "ISO C forbids casting nonscalar to the same type" } */
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21 (union u) uv; /* { dg-error "ISO C forbids casting nonscalar to the same type" } */
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22 (struct s) i; /* { dg-error "conversion to non-scalar type requested" } */
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23 (union u) i; /* { dg-error "ISO C forbids casts to union type" } */
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24 (union u) l; /* { dg-error "cast to union type from type not present in union" } */
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25 (int) sv; /* { dg-error "aggregate value used where an integer was expected" } */
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26 (int) uv; /* { dg-error "aggregate value used where an integer was expected" } */
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27 (float) sv; /* { dg-error "aggregate value used where a float was expected" } */
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28 (float) uv; /* { dg-error "aggregate value used where a float was expected" } */
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29 (_Complex double) sv; /* { dg-error "aggregate value used where a complex was expected" } */
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30 (_Complex double) uv; /* { dg-error "aggregate value used where a complex was expected" } */
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31 (void *) sv; /* { dg-error "cannot convert to a pointer type" } */
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32 (void *) uv; /* { dg-error "cannot convert to a pointer type" } */
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33 (_Bool) sv; /* { dg-error "used struct type value where scalar is required" } */
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34 (_Bool) uv; /* { dg-error "used union type value where scalar is required" } */
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35 (void) sv;
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36 (const void) uv;
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37 (void *) c; /* { dg-warning "cast to pointer from integer of different size" } */
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38 (void *) (char) 1;
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39 (char) p; /* { dg-warning "cast from pointer to integer of different size" } */
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40 (char) (void *) 1; /* { dg-warning "cast from pointer to integer of different size" } */
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41 }
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