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https://issues.apache.org/jira/browse/XERCESC-2179?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16966776#comment-16966776
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Scott Cantor commented on XERCESC-2179:
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Martin, you keep believing incorrectly that LPDWORD is a pointer to a 64-bit
data item. It is *not* pointing to 64 bits of data, that's a pointer to 32 bits
of data.
unsigned int = 4
DWORD = 4
unsigned long = 4
See? All those are 4 bytes by your own testing. That's all the code is doing,
passing pointers to these 4-byte objects around into LPDWORD parameters. That's
correct code.
That doesn't mean there isn't a bug, or a crash, or that something you changed
might have had an effect, but it wasn't this particular change.
> access violation in win32transservice.cpp with 64 bit compile
> -------------------------------------------------------------
>
> Key: XERCESC-2179
> URL: https://issues.apache.org/jira/browse/XERCESC-2179
> Project: Xerces-C++
> Issue Type: Bug
> Components: DOM
> Affects Versions: 3.2.2
> Reporter: martin goodall
> Assignee: Alberto Massari
> Priority: Blocker
> Fix For: 3.2.3
>
> Attachments: Win32TransService.cpp
>
>
> calls to ::Reg... to get registry info are passing in stack variables that
> are 8 bytes long into functions that overwrite 16 bytes, causing memory
> overwrite and very random segs.
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