Re: [PATCH] malloc: Fix missing accounting of top chunk in malloc_info [BZ #24026]

[Joseph Myers <joseph@codesourcery.com>]

On Fri, 2 Aug 2019, Carlos O'Donell wrote:

> > Writing a test case for this would unfortunately need an XML parser.
> > I don't know if we can use the one that comes with Python.
> 
> I don't see why we can't use 'import xml' to use the language
> provided XML parser.

It's the warning at 
<https://sourceware.org/glibc/wiki/Style_and_Conventions#Python_usage_conventions> 
about avoiding standard library modules depending on external libraries, 
to assist in bootstrap etc. configurations (bringing up native builds on a 
new system which might start without a full Python install).  However, (a) 
that's only for the build of glibc, testing glibc might use such modules 
provided it's appropriately conditional so tests end up as UNSUPPORTED if 
they are unavailable, and (b) the Python documentation says "The Expat 
parser is included with Python, so the xml.parsers.expat module will 
always be available.", which indicates that shouldn't be considered as 
depending on an external library anyway.

-- 
Joseph S. Myers
joseph@codesourcery.com