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From: =?utf-8?B?Y2NhNTUwNw==?= <[email protected]>
To: =?utf-8?B?TWljaGFlbCBQYXF1aWVy?= <[email protected]>
To: =?utf-8?B?SmltIEpvbmVz?= <[email protected]>
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Subject: Re: BUG #18943: Return value of a function 'xmlBufferCreate' isdereferenced at xpath.c:177 without checking for NUL
Date: Sun, 8 Mar 2026 22:12:09 +0800
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	<CAPLXN34Dr3Gbi+xJ6BgCeTyBJkMVe3cn7qxoADV72rC9ZHeBtQ@mail.gmail.com>
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Hi,

It seems that there are 2 misuse of "volatile" in xml.c:

1) xmltext()

volatile xmlChar *xmlbuf = NULL; // -> xmlChar *volatile xmlbuf = NULL;

2) xml_xmlnodetoxmltype()

volatile xmlChar *str = NULL; // -> xmlChar *volatile str = NULL;

We want the pointer itself be volatile rather than what it points to.

--
Regards,
ChangAo Chen

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