Silence GCC warnings.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@160485 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/include/clang/StaticAnalyzer/Core/PathSensitive/Calls.h b/include/clang/StaticAnalyzer/Core/PathSensitive/Calls.h
index e0ed3cd..d406827 100644
--- a/include/clang/StaticAnalyzer/Core/PathSensitive/Calls.h
+++ b/include/clang/StaticAnalyzer/Core/PathSensitive/Calls.h
@@ -732,7 +732,8 @@
     return cast<CXXAllocatorCall>(this)->fn(); \
   case CE_ObjCMessage: \
     return cast<ObjCMethodCall>(this)->fn(); \
-  }
+  } \
+  llvm_unreachable("unknown CallEvent kind");
 
 #define DISPATCH_ARG(fn, arg) \
   switch (getKind()) { \
@@ -752,7 +753,8 @@
     return cast<CXXAllocatorCall>(this)->fn(arg); \
   case CE_ObjCMessage: \
     return cast<ObjCMethodCall>(this)->fn(arg); \
-  }
+  } \
+  llvm_unreachable("unknown CallEvent kind");
 
 inline void CallEvent::getExtraInvalidatedRegions(RegionList &Regions) const {
   DISPATCH_ARG(getExtraInvalidatedRegions, Regions);