diff --git a/tools/llvmc/llvmc.cpp b/tools/llvmc/llvmc.cpp
index fe36505..fd416b2 100644
--- a/tools/llvmc/llvmc.cpp
+++ b/tools/llvmc/llvmc.cpp
@@ -368,4 +368,5 @@
   } catch (...) {
     std::cerr << argv[0] << ": Unexpected unknown exception occurred.\n";
   }
+  return 1;
 }