From facdcc56815e93a378a82b57a554f75a9a54c8d4 Mon Sep 17 00:00:00 2001
Date: Mon, 17 May 2021 21:19:46 -0700
Subject: [PATCH 18/24] 10.6 and less: clang default to libc++ on all darwin
 systems

---
 clang/lib/Driver/ToolChains/Darwin.cpp | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/clang/lib/Driver/ToolChains/Darwin.cpp b/clang/lib/Driver/ToolChains/Darwin.cpp
index cef270cfc34a..3751a6a3986f 100644
--- a/clang/lib/Driver/ToolChains/Darwin.cpp
+++ b/clang/lib/Driver/ToolChains/Darwin.cpp
@@ -823,8 +823,8 @@
 bool MachO::HasNativeLLVMSupport() const { return true; }
 
 ToolChain::CXXStdlibType Darwin::GetDefaultCXXStdlibType() const {
-  // Default to use libc++ on OS X 10.9+ and iOS 7+.
-  if ((isTargetMacOSBased() && !isMacosxVersionLT(10, 9)) ||
+  // Default to use libc++ on OS X 10.4+ and iOS 7+.
+  if ((isTargetMacOSBased() && !isMacosxVersionLT(10, 4)) ||
       (isTargetIOSBased() && !isIPhoneOSVersionLT(7, 0)) ||
       isTargetWatchOSBased())
     return ToolChain::CST_Libcxx;
2.21.1 (Apple Git-122.3)

