[libcxx] [llvm] [libc++] Upgrade Xcode to 26.0 (PR #160097)

[Louis Dionne via llvm-commits]

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@@ -17,7 +17,8 @@
 // out-of-the-box.
 // REQUIRES: has-fobjc-arc && darwin
 
-// ADDITIONAL_COMPILE_FLAGS: -fobjc-arc
+// FIXME: including <Foundation/Foundation.h> seems to be currently broken with modules enabled
+// ADDITIONAL_COMPILE_FLAGS: -fobjc-arc -fno-modules
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ldionne wrote:

CC @ian-twilightcoder 

https://github.com/llvm/llvm-project/pull/160097