[PATCH] libstdc++: Export std::ranges::views::indices in std.cc

[Jakub Jelinek]

Hi!

views::indices were added P3060R3 r16-4511, but not exported.

Tested on x86_64-linux, ok for trunk?

2026-03-19  Jakub Jelinek  <jakub@redhat.com>

	* src/c++23/std.cc.in: Export views::indices.

--- libstdc++-v3/src/c++23/std.cc.in.jj	2026-03-19 14:52:26.683513322 +0100
+++ libstdc++-v3/src/c++23/std.cc.in	2026-03-19 15:00:08.751617173 +0100
@@ -2795,6 +2795,9 @@ export namespace std
     using ranges::to_input_view;
     namespace views { using views::to_input; }
 #endif
+#ifdef __cpp_lib_ranges_indices // C++ >= 26
+    namespace views { using views::indices; }
+#endif
   }
 #if __glibcxx_ranges_to_container // C++ >= 23
   namespace ranges { using ranges::to; }

	Jakub