Package: python-libxslt1 Version: 1.1.14-1 Severity: important Tags: patch Several Python accessor functions for string fields of libxslt structures call libxml_xmlCharPtrWrap to wrap the 'xmlChar *' in a Python string object, which calls xmlFree on the field after creating the Python string from it; this leads to memory corruption and segfaults. The attached patch modifies the API description XML file to mark these return values as "const xmlChar *" rather than "xmlChar *" so that the generated accessor functions call libxml_constxmlCharPtrWrap instead, which does not call xmlFree.
- Josh Triplett
diff -Naur libxslt-1.1.14.old/python/libxslt-python-api.xml libxslt-1.1.14/python/libxslt-python-api.xml
--- libxslt-1.1.14.old/python/libxslt-python-api.xml 2004-07-13 08:43:19.000000000 -0700
+++ libxslt-1.1.14/python/libxslt-python-api.xml 2005-09-06 15:24:56.000000000 -0700
@@ -141,22 +141,22 @@
</function>
<function name='xsltStylesheetGetMethod' file='python_accessor'>
<info>Get the output method of a stylesheet</info>
- <return type='xmlChar *' info="The output method" field="method"/>
+ <return type='const xmlChar *' info="The output method" field="method"/>
<arg name='style' type='xsltStylesheetPtr' info='the stylesheet'/>
</function>
<function name='xsltStylesheetGetMethodURI' file='python_accessor'>
<info>Get the output method URI of a stylesheet</info>
- <return type='xmlChar *' info="The output method URI" field="methodURI"/>
+ <return type='const xmlChar *' info="The output method URI" field="methodURI"/>
<arg name='style' type='xsltStylesheetPtr' info='the stylesheet'/>
</function>
<function name='xsltStylesheetGetVersion' file='python_accessor'>
<info>Get the output version of a stylesheet</info>
- <return type='xmlChar *' info="The output version" field="version"/>
+ <return type='const xmlChar *' info="The output version" field="version"/>
<arg name='style' type='xsltStylesheetPtr' info='the stylesheet'/>
</function>
<function name='xsltStylesheetGetEncoding' file='python_accessor'>
<info>Get the output encoding of a stylesheet</info>
- <return type='xmlChar *' info="The output encoding" field="encoding"/>
+ <return type='const xmlChar *' info="The output encoding" field="encoding"/>
<arg name='style' type='xsltStylesheetPtr' info='the stylesheet'/>
</function>
<function name='xsltStylesheetGetDoctypePublic' file='python_accessor'>
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