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gcc 7
author kono
date Fri, 27 Oct 2017 22:46:09 +0900
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children 84e7813d76e9
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// PR c++/70323
// { dg-do compile { target c++11 } }

constexpr int overflow_if_0 (int i) { return __INT_MAX__ + !i; }
constexpr int overflow_if_1 (int i) { return __INT_MAX__ + i; }

constexpr bool i0_0 = overflow_if_0 (0);   // { dg-error "overflow in constant expression" }
constexpr bool i0_1 = overflow_if_0 (1);
constexpr bool i1_0 = overflow_if_1 (0);
constexpr bool i1_1 = overflow_if_1 (1);   // { dg-error "overflow in constant expression" }