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111
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1 /* Test for constant expressions: __builtin_choose_expr. */
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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=gnu89 -pedantic-errors" } */
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5
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6 #include <limits.h>
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7
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8 int a, b, c;
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9
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10 void
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11 f (void)
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12 {
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13 /* __builtin_choose_expr acts exactly like the chosen argument for
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14 all constant expression purposes. */
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15 enum e {
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16 E1 = __builtin_choose_expr (1, 1, ++b)
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17 };
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18 /* The first argument to __builtin_choose_expr must be an integer
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19 constant expression. */
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20 a = __builtin_choose_expr ((void *)0, b, c); /* { dg-error "constant" } */
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21 a = __builtin_choose_expr (0 * (INT_MAX + 1), b, c); /* { dg-warning "integer overflow in expression" } */
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22 /* { dg-error "overflow in constant expression" "constant" { target *-*-* } .-1 } */
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23 a = __builtin_choose_expr (1 / 0, 0, 0); /* { dg-warning "division by zero" } */
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24 /* { dg-error "not a constant" "error" { target *-*-* } .-1 } */
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25 a = __builtin_choose_expr ((1 ? 1 : a), b, c); /* { dg-error "constant" } */
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26 }
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