[analyzer] Cleanup leak warnings: do not print the names of variables from other functions.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@179219 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/StaticAnalyzer/Checkers/MallocChecker.cpp b/lib/StaticAnalyzer/Checkers/MallocChecker.cpp
index cc5c604..03471a5 100644
--- a/lib/StaticAnalyzer/Checkers/MallocChecker.cpp
+++ b/lib/StaticAnalyzer/Checkers/MallocChecker.cpp
@@ -1527,13 +1527,19 @@
 
     // Find the most recent expression bound to the symbol in the current
     // context.
-    if (!ReferenceRegion) {
-      if (const MemRegion *MR = C.getLocationRegionIfPostStore(N)) {
-        SVal Val = State->getSVal(MR);
-        if (Val.getAsLocSymbol() == Sym)
-          ReferenceRegion = MR;
+      if (!ReferenceRegion) {
+        if (const MemRegion *MR = C.getLocationRegionIfPostStore(N)) {
+          SVal Val = State->getSVal(MR);
+          if (Val.getAsLocSymbol() == Sym) {
+            const VarRegion* VR = MR->getAs<VarRegion>();
+            // Do not show local variables belonging to a function other than
+            // where the error is reported.
+            if (!VR ||
+                (VR->getStackFrame() == LeakContext->getCurrentStackFrame()))
+              ReferenceRegion = MR;
+          }
+        }
       }
-    }
 
     // Allocation node, is the last node in the current context in which the
     // symbol was tracked.
diff --git a/lib/StaticAnalyzer/Checkers/RetainCountChecker.cpp b/lib/StaticAnalyzer/Checkers/RetainCountChecker.cpp
index 79409e8..fa864b4 100644
--- a/lib/StaticAnalyzer/Checkers/RetainCountChecker.cpp
+++ b/lib/StaticAnalyzer/Checkers/RetainCountChecker.cpp
@@ -2150,7 +2150,14 @@
 
     StoreManager::FindUniqueBinding FB(Sym);
     StateMgr.iterBindings(St, FB);
-    if (FB) FirstBinding = FB.getRegion();
+    if (FB) {
+      const MemRegion *R = FB.getRegion();
+      const VarRegion *VR = R->getAs<VarRegion>();
+      // Do not show local variables belonging to a function other than
+      // where the error is reported.
+      if (!VR || VR->getStackFrame() == LeakContext->getCurrentStackFrame())
+          FirstBinding = R;
+    }
 
     // Allocation node, is the last node in the current context in which the
     // symbol was tracked.