<div dir="ltr"><div>Hi,<br><br></div>Attila is right, it would help a lot to see the original log message and your glib version. That code path uses a performance hack that relies on a GLib implementation detail. Either the glib behaviour has changed or another assumption fails, but just looking at the code I don't know what might.<br></div><div class="gmail_extra"><br clear="all"><div><div class="gmail_signature" data-smartmail="gmail_signature"><div dir="ltr">-- <br>Bazsi<br></div></div></div>
<br><div class="gmail_quote">On Fri, Jan 6, 2017 at 1:41 PM, Szalai, Attila <span dir="ltr"><<a href="mailto:Attila.Szalai@morganstanley.com" target="_blank">Attila.Szalai@morganstanley.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d">Hi James,<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d"><u></u> <u></u></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d">Checking the source, it means the following:<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d"><u></u> <u></u></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d">The code allocate a buffer 6 times bigger than the original string length to able to hold the escaped form of the utf-8 character.<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d"><u></u> <u></u></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d">The assert means, that the string, after escaping was not fit into this buffer for some reason. Or, to be more precise, the GString implementation decided that
it should reallocate the string, which usually only happen if the string gets too big to fit into its original place. Currently I have no recent glib source to check if I’m right.<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d"><u></u> <u></u></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d">The original string could help a lot to find the root cause.<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d"><u></u> <u></u></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d">Ps.: the escaping works as replacing the original byte with \xHH, so theoretically it can only grows from 1 byte to 4, which should fit into a buffer 6 times
bigger than the original size.<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d"><u></u> <u></u></span></p>
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<p class="MsoNormal"><b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif"">From:</span></b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif""> syslog-ng [mailto:<a href="mailto:syslog-ng-bounces@lists.balabit.hu" target="_blank">syslog-ng-bounces@<wbr>lists.balabit.hu</a>]
<b>On Behalf Of </b>James Elstone<br>
<b>Sent:</b> Thursday, January 05, 2017 10:35 PM<br>
<b>To:</b> <a href="mailto:syslog-ng@lists.balabit.hu" target="_blank">syslog-ng@lists.balabit.hu</a><br>
<b>Subject:</b> [syslog-ng] Hitting g_assert when using sanitize-utf8 enabled!<u></u><u></u></span></p>
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<p class="MsoNormal"><u></u> <u></u></p>
<p class="MsoNormal">Hi Balabit et al,<br>
<br>
When using the sanitize-utf8 flag I am hitting a g_assert in modules/syslogformat/syslog-<wbr>format.c; what could be causing this?<br>
<br>
Any advice welcome!!<br>
<br>
Kr,<br>
<br>
James<br>
-- <br>
Sent from my Android device with K-9 Mail. Please excuse my brevity.<u></u><u></u></p>
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