robin hood: resolve warning on new clang #44
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Clang has this weird behavior of setting __GNUC__ to 4, hence clang will always take the if branch. This is suboptimal because std::is_trivially_copyable has almost always been in clang. starting with clang 15 a warning is raised for the current implementation: warning: builtin __has_trivial_copy is deprecated; use __is_trivially_copyable instead [-Wdeprecated-builtins] Since we are using -Werror, we should fix this.
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Clang has this weird behavior of setting
__GNUC__to 4, hence clang will always take the if branch. This is suboptimal because std::is_trivially_copyable has almost always been in clang.starting with clang 15 a warning is raised for the current implementation: warning: builtin __has_trivial_copy is deprecated; use __is_trivially_copyable instead [-Wdeprecated-builtins]
Since we are using -Werror, we should fix this.
Note this resolves the same issue with martinus/robin-hood-hashing#166 , but with a different patch.
But that PR is never released, and the original repo is archived. So, I just removed this helper. GCC4 is too old to support.