[clang] [clang][driver] Add \<executable\>/../include/c++/v1 to include path on Darwin (PR #70817)

[Liviu Ionescu via cfe-commits]

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@@ -2494,6 +2494,19 @@ void DarwinClang::AddClangCXXStdlibIncludeArgs(
                    << "\"\n";
     }
 
+    // Check for the folder where the executable is located, if different.
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ilg-ul wrote:

Done.

https://github.com/llvm/llvm-project/pull/70817