comctl32/listview: Filter invalid indices when setting selection mark.

dlls/comctl32/listview.c

@@ -9053,7 +9053,8 @@ static INT LISTVIEW_SetSelectionMark(LISTVIEW_INFO *infoPtr, INT nIndex)
 
   TRACE("(nIndex=%d)\n", nIndex);
 
-  infoPtr->nSelectionMark = nIndex;
+  if (nIndex >= -1 && nIndex < infoPtr->nItemCount)
+    infoPtr->nSelectionMark = nIndex;
 
   return nOldIndex;
 }

dlls/comctl32/tests/listview.c

@@ -2257,7 +2257,29 @@ static void test_multiselect(void)
     item_count = SendMessageA(hwnd, LVM_GETITEMCOUNT, 0, 0);
     expect(items, item_count);
 
-    for (i = 0; i < 4; i++) {
+    r = SendMessageA(hwnd, LVM_SETSELECTIONMARK, 0, -1);
+    ok(r == -1, "got %d\n", r);
+
+    r = SendMessageA(hwnd, LVM_SETSELECTIONMARK, 0, 0);
+    ok(r == -1, "got %d\n", r);
+
+    r = SendMessageA(hwnd, LVM_SETSELECTIONMARK, 0, 0);
+    ok(r == 0, "got %d\n", r);
+
+    /* out of range index */
+    r = SendMessageA(hwnd, LVM_SETSELECTIONMARK, 0, items);
+    ok(r == 0, "got %d\n", r);
+
+    r = SendMessageA(hwnd, LVM_GETSELECTIONMARK, 0, 0);
+    ok(r == 0, "got %d\n", r);
+
+    r = SendMessageA(hwnd, LVM_SETSELECTIONMARK, 0, -2);
+    ok(r == 0, "got %d\n", r);
+
+    r = SendMessageA(hwnd, LVM_GETSELECTIONMARK, 0, 0);
+    ok(r == 0, "got %d\n", r);
+
+    for (i = 0; i < sizeof(task_list)/sizeof(task_list[0]); i++) {
         DWORD selected_count;
         LVITEMA item;