beinhaerter ef0ffefe52 is_comparable_to_nullptr for better static_assert (#975) ... * is_comparable_to_nullptr for better static_assert Trying `gsl::not_null<char> p2{ 0 };` on VS2019 the current implementation would trigger >error C2446 : '!=' : no conversion from 'nullptr' to 'int' >message: A native nullptr can only be converted to bool or , using reinterpret_cast, to an integral type >message: see reference to class template instantiation 'gsl::not_null<char>' being compiled >error C2955 : 'std::is_convertible' : use of class template requires template argument list >message: see declaration of 'std::is_convertible' >error C2039 : 'value' : is not a member of 'std::is_convertible<_From,_To>' >error C2065 : 'value' : undeclared identifier The new implementation gives much shorter and clearer message and does exactly as the `static_assert` intends to do: > error C2338: T cannot be compared to nullptr. > message : see reference to class template instantiation 'gsl::not_null<char *>' being compiled * Update include/gsl/pointers Co-authored-by: Casey Carter <cartec69@gmail.com> Co-authored-by: Werner Henze <w.henze@avm.de> Co-authored-by: Casey Carter <cartec69@gmail.com>		2021-02-24 14:39:13 -08:00
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gsl	is_comparable_to_nullptr for better static_assert (#975)	2021-02-24 14:39:13 -08:00
CMakeLists.txt	Minor cmake nitpicks (#969)	2021-01-08 09:56:04 -08:00