https://github.com/llvm/llvm-project/blob/3af4590506634fa176be5cb5f53161f96609730c/clang/lib/Parse/ParseExpr.cpp#L1071
This works:
template <bool>
struct _BoolConstant {};
#if __has_builtin(__is_destructible)
template <class _Tp>
struct is_destructible : _BoolConstant<__is_destructible(_Tp)> {};
#endifBut this doesn't:
template <bool>
struct _BoolConstant {};
template <class _Tp>
struct is_destructible : _BoolConstant<__is_destructible(_Tp)> {};This suggests there may be something stateful involved with __is_destructibe showing up first in the __has_builtin.
https://github.com/llvm/llvm-project/blob/3af4590506634fa176be5cb5f53161f96609730c/clang/lib/Parse/ParseExpr.cpp#L1071
This works:
But this doesn't:
This suggests there may be something stateful involved with
__is_destructibeshowing up first in the__has_builtin.