Mercurial > hg > CbC > CbC_gcc
view gcc/testsuite/g++.dg/cpp0x/constexpr-union.C @ 131:84e7813d76e9
gcc-8.2
author | mir3636 |
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date | Thu, 25 Oct 2018 07:37:49 +0900 |
parents | 04ced10e8804 |
children |
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// Test that we don't have to deal with type punning // DR 1188 says this is ill-formed // { dg-do compile { target c++11 } } union U { float f; unsigned char ca[sizeof(float)]; }; constexpr U u = { 1.0 }; constexpr float f = u.f; constexpr unsigned char c = u.ca[0]; // { dg-error "U::ca" } constexpr double d = 1.0; constexpr unsigned char c2 = (unsigned char&)d; // { dg-error "char. glvalue" }