[analyzer] Fix lack of coverage after empty inlined function.

We should not stop exploring the path after we return from an empty
function.

llvm-svn: 157859

clang/lib/StaticAnalyzer/Core/ExprEngineCallAndReturn.cpp

@@ -159,6 +159,8 @@ void ExprEngine::processCallExit(ExplodedNode *CEBNode) {
     removeDead(BindedRetNode, CleanedNodes, 0, callerCtx, LastSt,
                ProgramPoint::PostStmtPurgeDeadSymbolsKind);
     currentBuilderContext = 0;
+  } else {
+    CleanedNodes.Add(CEBNode);
   }
 
   for (ExplodedNodeSet::iterator I = CleanedNodes.begin(),

clang/test/Analysis/coverage.c

@@ -92,3 +92,11 @@ void coverage9(int *x) {
   function_which_gives_up_settonull(&x);
   y = (*x);  // no warning
 }
+
+static void empty_function(){
+}
+int use_empty_function(int x) {
+    x = 0;
+    empty_function();
+    return 5/x; //expected-warning {{Division by zero}}
+}