Nikolay Sivov : comctl32/treeview: Fix possible crash in TVS_SINGELEXPAND helper (Coverity).
Alexandre Julliard
julliard at winehq.org
Wed Jul 28 10:45:10 CDT 2010
Module: wine
Branch: master
Commit: 279677b7d8419d9ef03a95822c0d9e097c8b6ca1
URL: http://source.winehq.org/git/wine.git/?a=commit;h=279677b7d8419d9ef03a95822c0d9e097c8b6ca1
Author: Nikolay Sivov <nsivov at codeweavers.com>
Date: Wed Jul 28 15:37:10 2010 +0400
comctl32/treeview: Fix possible crash in TVS_SINGELEXPAND helper (Coverity).
---
dlls/comctl32/tests/treeview.c | 7 +++++++
dlls/comctl32/treeview.c | 2 +-
2 files changed, 8 insertions(+), 1 deletions(-)
diff --git a/dlls/comctl32/tests/treeview.c b/dlls/comctl32/tests/treeview.c
index a0a3e23..5464975 100644
--- a/dlls/comctl32/tests/treeview.c
+++ b/dlls/comctl32/tests/treeview.c
@@ -1255,6 +1255,13 @@ static void test_TVS_SINGLEEXPAND(void)
ok(ret, "got %d\n", ret);
ok_sequence(sequences, PARENT_SEQ_INDEX, parent_singleexpand_seq, "singleexpand notifications", FALSE);
+ /* a workaround for NT4 that sends expanding notification when nothing is about to expand */
+ ret = SendMessageA(hTree, TVM_DELETEITEM, 0, (LPARAM)hRoot);
+ ok(ret, "got %d\n", ret);
+ fill_tree(hTree);
+ ret = SendMessageA(hTree, TVM_SELECTITEM, TVGN_CARET, 0);
+ ok(ret, "got %d\n", ret);
+
DestroyWindow(hTree);
}
diff --git a/dlls/comctl32/treeview.c b/dlls/comctl32/treeview.c
index 3ee1639..e4c465b 100644
--- a/dlls/comctl32/treeview.c
+++ b/dlls/comctl32/treeview.c
@@ -3426,7 +3426,7 @@ static void TREEVIEW_SingleExpand(TREEVIEW_INFO *infoPtr,
{
TREEVIEW_ITEM *SelItem;
- if ((infoPtr->dwStyle & TVS_SINGLEEXPAND) == 0 || infoPtr->hwndEdit) return;
+ if ((infoPtr->dwStyle & TVS_SINGLEEXPAND) == 0 || infoPtr->hwndEdit || !item) return;
TREEVIEW_SendTreeviewNotify(infoPtr, TVN_SINGLEEXPAND, TVC_UNKNOWN, TVIF_HANDLE | TVIF_PARAM, item, 0);
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