From: Luc Grosheintz <luc.grosheintz@gmail.com>
Date: Fri, 12 Dec 2025 11:28:01 +0000 (+0100)
Subject: libstdc++: Make <mdspan> compatible with clang.
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=6b78e97a0cbc60dea937f3bf67c5d47033cf4731;p=thirdparty%2Fgcc.git

libstdc++: Make <mdspan> compatible with clang.

The submdspan feature broke compatibility with clang, due to a missing
'::template type'.

libstdc++-v3/ChangeLog:

	* include/std/mdspan (submdspan): Fix missing '::template'.

Reviewed-by: Jonathan Wakely <jwakely@redhat.com>
Signed-off-by: Luc Grosheintz <luc.grosheintz@gmail.com>
---

diff --git a/libstdc++-v3/include/std/mdspan b/libstdc++-v3/include/std/mdspan
index dc0aa4f9584..cedf597d3c2 100644
--- a/libstdc++-v3/include/std/mdspan
+++ b/libstdc++-v3/include/std/mdspan
@@ -3376,7 +3376,7 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
   template<typename _ElementType, typename _Extents, typename _Layout,
 	   typename _Accessor, typename... _RawSlices>
     requires (sizeof...(_RawSlices) == _Extents::rank()
-	&& __mdspan::__sliceable_mapping<typename _Layout::mapping<_Extents>,
+	&& __mdspan::__sliceable_mapping<typename _Layout::template mapping<_Extents>,
 	                                 __mdspan::__full_extent_t<_RawSlices>...>)
     constexpr auto
     submdspan(