Teach the IdempotentOperations checker to ignore property setters.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@125443 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 9 insertions, 2 deletions

diff --git a/lib/StaticAnalyzer/Checkers/IdempotentOperationChecker.cpp b/lib/StaticAnalyzer/Checkers/IdempotentOperationChecker.cpp
index 633648ec6c..7f64f8e2c4 100644
--- a/lib/StaticAnalyzer/Checkers/IdempotentOperationChecker.cpp
+++ b/lib/StaticAnalyzer/Checkers/IdempotentOperationChecker.cpp
@@ -357,8 +357,15 @@ void IdempotentOperationChecker::PostVisitBinaryOperator(
                                                       const BinaryOperator *B) {
   // Add the ExplodedNode we just visited
   BinaryOperatorData &Data = hash[B];
-  assert(isa<BinaryOperator>(cast<StmtPoint>(C.getPredecessor()
-                                             ->getLocation()).getStmt()));
+
+  const Stmt *predStmt 
+    = cast<StmtPoint>(C.getPredecessor()->getLocation()).getStmt();
+  
+  // Ignore implicit calls to setters.
+  if (isa<ObjCPropertyRefExpr>(predStmt))
+    return;
+  
+  assert(isa<BinaryOperator>(predStmt));
   Data.explodedNodes.Add(C.getPredecessor());
 }