diff --git a/runtimes/cmake/Modules/WarningFlags.cmake b/runtimes/cmake/Modules/WarningFlags.cmake
--- a/runtimes/cmake/Modules/WarningFlags.cmake
+++ b/runtimes/cmake/Modules/WarningFlags.cmake
@@ -48,6 +48,7 @@
         -Wno-deprecated # FIXME: Remove this and fix all occurrences.
         -Wno-shift-sign-overflow # FIXME: Why do we need this with clang-cl but not clang?
         -Wno-double-promotion # FIXME: remove me
+        -Wno-reserved-identifier
       )
     endif()