On 18/02/2020 12:56, Jonathan Wakely wrote:
Does this solve the problem, and work with both compilers?
diff --git a/libstdc++-v3/include/std/ranges
b/libstdc++-v3/include/std/ranges
index b9ac528fdff..481ba75ee5e 100644
--- a/libstdc++-v3/include/std/ranges
+++ b/libstdc++-v3/include/std/ranges
@@ -1102,6 +1102,9 @@ namespace views
}
};
+ template<typename _Callable>
+ _RangeAdaptor(_Callable) -> _RangeAdaptor<_Callable>;
+
template<typename _Callable>
struct _RangeAdaptorClosure : public _RangeAdaptor<_Callable>
{
With this deduction guide CTAD should work, without having to consider
the constraints on the constructors.
Yes, that indeed compiles with both GCC and Clang.
