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111
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1 /* Test for constant expressions: VLA size constraints. */
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2 /* Origin: Joseph Myers <joseph@codesourcery.com> */
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3 /* { dg-do compile } */
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4 /* { dg-options "-std=iso9899:1999 -pedantic-errors" } */
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5
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6 void
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7 f (int m)
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8 {
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9 /* An array size that is a constant expression, not just an integer
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10 constant expression, must be checked for being positive, but only
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11 an integer constant expression makes it not a VLA (which affects
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12 certain compatibility checks, in particular). */
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13 int a1[0]; /* { dg-error "zero" } */
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14 int a2[-1]; /* { dg-error "negative" } */
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15 int a3[(int)(double)0.0]; /* { dg-error "zero" } */
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16 int a4[(int)-1.0]; /* { dg-error "negative" } */
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17 int a5[(int)+1.0];
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18 int a6[(int)+2.0];
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19 void *p = (m ? &a5 : &a6);
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20 int a7[(int)1.0];
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21 int a8[(int)2.0];
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22 void *q = (m ? &a7 : &a8); /* { dg-error "pointer type mismatch in conditional expression" } */
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23 }
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