[Bug 27340] WoW Launcher crashes, NULL pointer dereferenced

wine-bugs at winehq.org wine-bugs at winehq.org
Wed Jun 1 03:18:02 CDT 2011


--- Comment #3 from rankincj at yahoo.com 2011-06-01 03:18:02 CDT ---
The exact stack trace of the crash is:

=>0 0x7cc98ed0 doc_insert_script+0x30() in mshtml (0x0032e474)
  1 0x7cc6cff6 run_insert_script+0xb5() in mshtml (0x037628e8)
  2 0x0032e550 (0x047c95b8)
  3 0x00000002 (0x7ccf0a28)
  4 0x7cc6cb30 in mshtml (+0x6cb2f) (0x7cc6df60)
  5 0x00000010 (0xb94cec83)

The code in run_insert_script() is:

    nsres = nsISupports_QueryInterface(script_iface,
&IID_nsIDOMHTMLScriptElement, (void**)&nsscript);
    if(NS_FAILED(nsres)) {
        ERR("Could not get nsIDOMHTMLScriptElement: %08x\n", nsres);
        return nsres;

So nsscript must still be NULL after calling nsISupports_QueryInterface(), and
NS_FAILED(nsres) is not true.

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