[libc++] Use __is_exactly_{input, forward}_iterator
Reviewed By: ldionne, #libc
Spies: libcxx-commits
Differential Revision: https://reviews.llvm.org/D128646
NOKEYCHECK=True
GitOrigin-RevId: 00927334df9a8133a5112c0450349d546373316f
diff --git a/include/regex b/include/regex
index a117c50..bd04017 100644
--- a/include/regex
+++ b/include/regex
@@ -2748,12 +2748,7 @@
template <class _InputIterator>
_LIBCPP_INLINE_VISIBILITY
- typename enable_if
- <
- __is_cpp17_input_iterator <_InputIterator>::value &&
- !__is_cpp17_forward_iterator<_InputIterator>::value,
- basic_regex&
- >::type
+ typename enable_if<__is_exactly_cpp17_input_iterator<_InputIterator>::value, basic_regex&>::type
assign(_InputIterator __first, _InputIterator __last,
flag_type __f = regex_constants::ECMAScript)
{