[ubsan] Try to fix Windows

Author: vitalybuka

compiler-rt/lib/ubsan/ubsan_handlers.cpp

@@ -908,14 +908,17 @@ extern "C" void __ubsan_handle_cfi_bad_type_default(CFICheckFailData *Data,
 }
 
 WIN_WEAK_ALIAS(__ubsan_handle_cfi_bad_type, __ubsan_handle_cfi_bad_type_default)
-#endif
+void __ubsan_handle_cfi_bad_type(CFICheckFailData *Data, ValueHandle Vtable,
+                                 bool ValidVtable, ReportOptions Opts);
+#else
 SANITIZER_WEAK_ATTRIBUTE
 void __ubsan_handle_cfi_bad_type(CFICheckFailData *Data, ValueHandle Vtable,
                                  bool ValidVtable, ReportOptions Opts) {
   Die();
 }
+#endif
 
-}  // namespace __ubsan
+} // namespace __ubsan
 
 void __ubsan::__ubsan_handle_cfi_check_fail(CFICheckFailData *Data,
                                             ValueHandle Value,