Fix potential memory leak for clients of clang_getOverriddenCursors(). If the number of overriden cursors is 0, do not allocate an array of CXCursors. This fixes a memory leak in c-index-test, and clients who use this API in a similar way.

llvm-svn: 144595

1 files changed, 4 insertions, 0 deletions

diff --git a/clang/tools/libclang/CIndex.cpp b/clang/tools/libclang/CIndex.cpp
index f9a873819a9..8f4b0471f88 100644
--- a/clang/tools/libclang/CIndex.cpp
+++ b/clang/tools/libclang/CIndex.cpp
@@ -5240,6 +5240,10 @@ void clang_getOverriddenCursors(CXCursor cursor,
   SmallVector<CXCursor, 8> Overridden;
   cxcursor::getOverriddenCursors(cursor, Overridden);
 
+  // Don't allocate memory if we have no overriden cursors.
+  if (Overridden.size() == 0)
+    return;
+
   *num_overridden = Overridden.size();
   *overridden = new CXCursor [Overridden.size()];
   std::copy(Overridden.begin(), Overridden.end(), *overridden);