commit 1e4ae5d62ba1c1171e8c4ed41a35701f658ee938
author Nikolas Klauser <nikolasklauser@berlin.de> Wed Nov 02 20:27:42 2022 +0100
committer Copybara-Service <copybara-worker@google.com> Sat Nov 05 13:01:25 2022 -0700
tree 9625fd909193bcd990c219cd48a15f7b4460c864
parent c07455907642f45305377ce2b0ef8c47050311ee

[libc++] Granularize <concept> includes

Reviewed By: ldionne, #libc

Spies: libcxx-commits

Differential Revision: https://reviews.llvm.org/D137283

NOKEYCHECK=True
GitOrigin-RevId: 89b356f05ab7aa3d96fc7b68aece6e7a5bdb0db5

include/fstream

diff --git a/include/fstream b/include/fstream
index 95f345f..1d2cb79 100644
--- a/include/fstream
+++ b/include/fstream
@@ -1744,4 +1744,8 @@
 
 _LIBCPP_POP_MACROS
 
+#if !defined(_LIBCPP_REMOVE_TRANSITIVE_INCLUDES) && _LIBCPP_STD_VER <= 20
+#  include <concepts>
+#endif
+
 #endif // _LIBCPP_FSTREAM