oleaut32: Handle negative offsets into the custom data table.

Fixes a crash in the Visio 2002 installer.

oleaut32: Handle negative offsets into the custom data table.
110d9663 · Hans Leidekker · Alexandre Julliard · d6073cc5 · 110d9663
Commit 110d9663 authored Jan 17, 2012 by Hans Leidekker Committed by Alexandre Julliard Jan 17, 2012
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typelib.c dlls/oleaut32/typelib.c +2 -0

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--- a/dlls/oleaut32/typelib.c
+++ b/dlls/oleaut32/typelib.c
@@ -1939,6 +1939,8 @@ static int MSFT_CustData( TLBContext *pcx, int offset, struct list *custdata_lis

    TRACE_(typelib)("\n");

+    if (pcx->pTblDir->pCDGuids.offset < 0) return 0;
+
    while(offset >=0){
        count++;
        pNew=heap_alloc_zero(sizeof(TLBCustData));