Mercurial > hg > CbC > CbC_gcc
view gcc/testsuite/gcc.dg/gnu99-const-expr-2.c @ 131:84e7813d76e9
gcc-8.2
author | mir3636 |
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date | Thu, 25 Oct 2018 07:37:49 +0900 |
parents | 04ced10e8804 |
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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 *-*-* } .-1 } */ a = __builtin_choose_expr (1 / 0, 0, 0); /* { dg-warning "division by zero" } */ /* { dg-error "not a constant" "error" { target *-*-* } .-1 } */ a = __builtin_choose_expr ((1 ? 1 : a), b, c); /* { dg-error "constant" } */ }