Attempt to bring peace to -Werror buildbots.

llvm-svn: 276022

libcxxabi/test/catch_reference_nullptr.pass.cpp

@@ -12,6 +12,12 @@
 #include <cassert>
 #include <cstdlib>
 
+// Clang emits a warning on converting an object of type nullptr_t to bool,
+// even in generic code. Suppress it.
+#if defined(__clang__)
+#pragma clang diagnostic ignored "-Wnull-conversion"
+#endif
+
 struct A {};
 
 template<typename T, bool CanCatchNullptr>