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/* Test for constant expressions: __builtin_choose_expr.  */

/* Origin: Joseph Myers <joseph@codesourcery.com> */

/* { dg-do compile } */

/* { dg-options "-std=gnu99 -pedantic-errors" } */

#include <limits.h>

int a, b, c;

void

f (void)

{

  /* __builtin_choose_expr acts exactly like the chosen argument for

     all constant expression purposes.  */

  enum e {

    E1 = __builtin_choose_expr (1, 1, ++b)

  };

  /* The first argument to __builtin_choose_expr must be an integer

     constant expression.  */

  a = __builtin_choose_expr ((void *)0, b, c); /* { dg-error "constant" } */

  a = __builtin_choose_expr (0 * (INT_MAX + 1), b, c); /* { dg-warning "integer overflow in expression" } */

  /* { dg-error "overflow in constant expression" "constant" { target *-*-* } 21 } */

  a = __builtin_choose_expr (1 / 0, 0, 0); /* { dg-warning "division by zero" } */

  /* { dg-error "not a constant" "error" { target *-*-* } 23 } */

  a = __builtin_choose_expr ((1 ? 1 : a), b, c); /* { dg-error "constant" } */

}