Tweak the std::hash<> specialization for aarch64_features.

Move the specialization into an explicit std namespace to workaround a
bug in older compilers.  GCC 6.4.1 at least fails to compile the previous
version with the following error:

gdb/arch/aarch64.h:48:13: error: specialization of 'template<class _Tp> struct std::hash' in different namespace [-fpermissive]

  struct std::hash<aarch64_features>
This commit is contained in:
John Baldwin
2022-05-23 11:02:55 -07:00
parent d9b6e047f6
commit e8123c847f

View File

@@ -44,8 +44,10 @@ inline bool operator==(const aarch64_features &lhs, const aarch64_features &rhs)
&& lhs.tls == rhs.tls;
}
namespace std
{
template<>
struct std::hash<aarch64_features>
struct hash<aarch64_features>
{
std::size_t operator()(const aarch64_features &features) const noexcept
{
@@ -58,6 +60,7 @@ struct std::hash<aarch64_features>
return h;
}
};
}
/* Create the aarch64 target description. */