27 lines
1014 B
C
27 lines
1014 B
C
/* Test for constant expressions: __builtin_choose_expr. */
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/* Origin: Joseph Myers <joseph@codesourcery.com> */
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/* { dg-do compile } */
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/* { dg-options "-std=gnu89 -pedantic-errors" } */
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#include <limits.h>
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int a, b, c;
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void
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f (void)
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{
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/* __builtin_choose_expr acts exactly like the chosen argument for
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all constant expression purposes. */
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enum e {
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E1 = __builtin_choose_expr (1, 1, ++b)
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};
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/* The first argument to __builtin_choose_expr must be an integer
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constant expression. */
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a = __builtin_choose_expr ((void *)0, b, c); /* { dg-error "constant" } */
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a = __builtin_choose_expr (0 * (INT_MAX + 1), b, c); /* { dg-warning "integer overflow in expression" } */
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/* { dg-error "overflow in constant expression" "constant" { target *-*-* } .-1 } */
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a = __builtin_choose_expr (1 / 0, 0, 0); /* { dg-warning "division by zero" } */
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/* { dg-error "not a constant" "error" { target *-*-* } .-1 } */
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a = __builtin_choose_expr ((1 ? 1 : a), b, c); /* { dg-error "constant" } */
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}
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