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111
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1 /* Test for constant expressions: operands and casts not permitted in
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2 integer constant expressions. */
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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=iso9899:1990 -pedantic-errors" } */
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6
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7 __extension__ typedef __INTPTR_TYPE__ intptr_t;
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8
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9 /* PR 29116. */
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10 int n = 0, p[n * 0 + 1]; /* { dg-error "variabl|can't be evaluated" } */
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11
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12 /* PR 31871. */
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13 extern int c[1 + ((intptr_t) (void *) 0)]; /* { dg-error "variab|can't be evaluated" } */
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14
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15 /* Implicit conversions from floating-point constants are not OK,
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16 although explicit ones are. */
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17 extern int c1[1.0 ? 1 : 0]; /* { dg-error "variab|can't be evaluated" } */
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18
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19 extern int c2[(int)1.0 ? 1 : 0];
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20
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21 extern int c3[1.0 && 1]; /* { dg-error "variab|can't be evaluated" } */
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22
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23 extern int c4[(int)1.0 && 1];
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24
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25 extern int c5[1.0 || 1]; /* { dg-error "variab|can't be evaluated" } */
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26
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27 extern int c6[(int)1.0 || 1];
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28
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29 /* Similar with various other cases where integer constant expressions
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30 are required. */
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31
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32 struct s {
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33 int a : (n * 0 + 1); /* { dg-error "constant" } */
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34 };
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35
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36 enum e {
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37 E = (1 + ((intptr_t) (void *) 0)), /* { dg-error "constant" } */
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38 E2 = 0
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39 };
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40
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41 enum f {
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42 F = (1 ? 1 : n), /* { dg-error "constant" } */
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43 F2 = 0
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44 };
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45
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46 void
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47 f (int a)
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48 {
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49 int v[1 + ((intptr_t) (void *) 0)]; /* { dg-error "variab|can't be evaluated" } */
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50 switch (a)
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51 {
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52 case (n * 0 + 1): /* { dg-error "constant" } */
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53 ;
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54 }
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55 }
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