[analyzer] Fix false warning about memory leak for QApplication::postEvent

According to Qt documentation Qt takes care of memory allocated for QEvent:
http://doc.qt.io/qt-4.8/qcoreapplication.html#postEvent

A patch by Evgeniy Dushistov!

Differential Revision: http://reviews.llvm.org/D14170

llvm-svn: 256887

1 files changed, 10 insertions, 0 deletions

diff --git a/clang/lib/StaticAnalyzer/Checkers/MallocChecker.cpp b/clang/lib/StaticAnalyzer/Checkers/MallocChecker.cpp
index 713d9fe285a..ce2c19409dc 100644
--- a/clang/lib/StaticAnalyzer/Checkers/MallocChecker.cpp
+++ b/clang/lib/StaticAnalyzer/Checkers/MallocChecker.cpp
@@ -2508,6 +2508,16 @@ bool MallocChecker::mayFreeAnyEscapedMemoryOrIsModeledExplicitly(
     return true;
   }
 
+  if (FName == "postEvent" &&
+      FD->getQualifiedNameAsString() == "QCoreApplication::postEvent") {
+    return true;
+  }
+
+  if (FName == "postEvent" &&
+      FD->getQualifiedNameAsString() == "QCoreApplication::postEvent") {
+    return true;
+  }
+
   // Handle cases where we know a buffer's /address/ can escape.
   // Note that the above checks handle some special cases where we know that
   // even though the address escapes, it's still our responsibility to free the