Define sanitizer callbacks that fail tests when triggered.

ChaosTests/SanCallbacks.cpp

@@ -0,0 +1,21 @@
+#include <gtest/gtest.h>
+
+extern "C"
+{
+
+void __ubsan_on_report()
+{
+    FAIL() << "Encountered an undefined behavior sanitizer error";
+}
+
+void __asan_on_error()
+{
+    FAIL() << "Encountered an address sanitizer error";
+}
+
+void __tsan_on_report()
+{
+    FAIL() << "Encountered a thread sanitizer error";
+}
+
+} // extern "C"