[libcxx-commits] [libcxx] [libc++][CI] Tests the no RTTI configuration. (PR #65518)

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@@ -279,7 +279,9 @@ endif()
 
 # Feature options -------------------------------------------------------------
 option(LIBCXX_ENABLE_EXCEPTIONS "Use exceptions." ON)
-option(LIBCXX_ENABLE_RTTI "Use run time type information." ON)
+option(LIBCXX_ENABLE_RTTI
+  "Use run time type information.
+   This option may only be set to OFF when LIBCXX_ENABLE_EXCEPTIONS=OFF." ON)
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philnik777 wrote:

Is this only a problem within libc++ or is there some fundamental reason we can't do this (i.e. is RTTI always required for EH)?

https://github.com/llvm/llvm-project/pull/65518