From f2e79496bf9107eae1130e0d74c80b02a5b86cab Mon Sep 17 00:00:00 2001 From: Jonathan Wakely Date: Mon, 10 Oct 2016 13:17:34 +0100 Subject: LWG 2733, LWG 2759 reject bool in gcd and lcm * include/experimental/numeric (gcd, lcm): Make bool arguments ill-formed. * include/std/numeric (gcd, lcm): Likewise. * testsuite/26_numerics/gcd/gcd_neg.cc: New test. * testsuite/26_numerics/lcm/lcm_neg.cc: New test. From-SVN: r240919 --- libstdc++-v3/include/std/numeric | 14 ++++++++++---- 1 file changed, 10 insertions(+), 4 deletions(-) (limited to 'libstdc++-v3/include/std/numeric') diff --git a/libstdc++-v3/include/std/numeric b/libstdc++-v3/include/std/numeric index 7b1ab98..4414081 100644 --- a/libstdc++-v3/include/std/numeric +++ b/libstdc++-v3/include/std/numeric @@ -96,6 +96,8 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION __abs_integral(_Tp __val) { return __val; } + void __abs_integral(bool) = delete; + template constexpr common_type_t<_Mn, _Nn> __gcd(_Mn __m, _Nn __n) @@ -129,8 +131,10 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION constexpr common_type_t<_Mn, _Nn> gcd(_Mn __m, _Nn __n) { - static_assert(is_integral<_Mn>::value, "arguments to gcd are integers"); - static_assert(is_integral<_Nn>::value, "arguments to gcd are integers"); + static_assert(is_integral<_Mn>::value, "gcd arguments are integers"); + static_assert(is_integral<_Nn>::value, "gcd arguments are integers"); + static_assert(!is_same<_Mn, bool>::value, "gcd arguments are not bools"); + static_assert(!is_same<_Nn, bool>::value, "gcd arguments are not bools"); return __detail::__gcd(__m, __n); } @@ -140,8 +144,10 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION constexpr common_type_t<_Mn, _Nn> lcm(_Mn __m, _Nn __n) { - static_assert(is_integral<_Mn>::value, "arguments to lcm are integers"); - static_assert(is_integral<_Nn>::value, "arguments to lcm are integers"); + static_assert(is_integral<_Mn>::value, "lcm arguments are integers"); + static_assert(is_integral<_Nn>::value, "lcm arguments are integers"); + static_assert(!is_same<_Mn, bool>::value, "lcm arguments are not bools"); + static_assert(!is_same<_Nn, bool>::value, "lcm arguments are not bools"); return __detail::__lcm(__m, __n); } -- cgit v1.1