[GitHub] [commons-daemon] markt-asf commented on a change in pull request #32: DAEMON-336 - If lCallbacks is empty don't call the fnCallbacks to avoid an ACCESS_VIOLATION

[GitBox <gi...@apache.org>]

markt-asf commented on a change in pull request #32:
URL: https://github.com/apache/commons-daemon/pull/32#discussion_r699116202



##########
File path: src/native/windows/src/handles.c
##########
@@ -496,13 +496,15 @@ apxCloseHandle(APXHANDLE hObject)
 
     if (IS_INVALID_HANDLE(hObject) || hObject->dwType == APXHANDLE_TYPE_INVALID)
         return FALSE;
-    /* Call the user callback first */
-    (*hObject->fnCallback)(hObject, WM_CLOSE, 0, 0);
-    /* Now go through the callback chain */
-    TAILQ_FOREACH(lpCall, &hObject->lCallbacks, queue) {
+    if (!TAILQ_EMPTY(&hObject->lCallbacks)) {
+        /* Call the user callback first */
+        (*hObject->fnCallback)(hObject, WM_CLOSE, 0, 0);

Review comment:
       Why is this inside the test of `lCallbacks`?




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