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Avoid using is_convertible during allocator version detection to avoid incomplete type problems in clang compilers. has_version, has already checked the existence of the "version" typedef.

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Ion Gaztañaga
2019-03-26 22:42:10 +01:00
parent fa36fbb9a7
commit 0691018321
1 changed files with 3 additions and 13 deletions
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16
include/boost/container/detail/version_type.hpp
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@@ -39,24 +39,14 @@ struct version_type
: public dtl::integral_constant<unsigned, V> : public dtl::integral_constant<unsigned, V>
{ {
typedef T type; typedef T type;
version_type(const version_type<T, 0>&);
}; };
namespace impl{ namespace impl{
template <class T,
bool = dtl::is_convertible<version_type<T, 0>, typename T::version>::value>
struct extract_version
{
static const unsigned value = 1;
};
template <class T> template <class T>
struct extract_version<T, true> struct extract_version
{ : T::version
static const unsigned value = T::version::value; {};
};
template <class T> template <class T>
struct has_version struct has_version