[libcxx-commits] [libcxx] 5841140 - [libc++][modules] Fixes C++20 build errors.

[Mark de Wever via libcxx-commits]

Author: Mark de Wever
Date: 2023-12-23T11:43:17+01:00
New Revision: 5841140e38c94f3d2b29354f67e70803d88ce174

URL: https://github.com/llvm/llvm-project/commit/5841140e38c94f3d2b29354f67e70803d88ce174
DIFF: https://github.com/llvm/llvm-project/commit/5841140e38c94f3d2b29354f67e70803d88ce174.diff

LOG: [libc++][modules] Fixes C++20 build errors.

Recent CI changes have disabled testing modules in different
configurations. This broke building the std and std.compat module in
C++20. This was found by the CI in #76246.

Added: 
    

Modified: 
    libcxx/modules/std/algorithm.inc

Removed: 
    


################################################################################
diff  --git a/libcxx/modules/std/algorithm.inc b/libcxx/modules/std/algorithm.inc
index f6b35efa144f81..75e8a3af78dea2 100644
--- a/libcxx/modules/std/algorithm.inc
+++ b/libcxx/modules/std/algorithm.inc
@@ -16,7 +16,9 @@ export namespace std {
     using std::ranges::in_in_result;
     using std::ranges::in_out_out_result;
     using std::ranges::in_out_result;
+#if _LIBCPP_STD_VER >= 23
     using std::ranges::in_value_result;
+#endif
     using std::ranges::min_max_result;
     // using std::ranges::out_value_result;
   } // namespace ranges
@@ -40,6 +42,7 @@ export namespace std {
     using std::ranges::none_of;
   }
 
+#if _LIBCPP_STD_VER >= 23
   // [alg.contains], contains
   namespace ranges {
     using std::ranges::contains;
@@ -47,6 +50,7 @@ export namespace std {
     using std::ranges::contains_subrange;
 #endif
   } // namespace ranges
+#endif // _LIBCPP_STD_VER >= 23
 
   // [alg.foreach], for each
   using std::for_each;