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<b><a class="bz_bug_link
bz_status_NEW "
title="NEW - [GTK] [2.14.0] _cairo_surface_has_snapshots (surface)' failed"
href="https://bugs.webkit.org/show_bug.cgi?id=162497#c12">Comment # 12</a>
on <a class="bz_bug_link
bz_status_NEW "
title="NEW - [GTK] [2.14.0] _cairo_surface_has_snapshots (surface)' failed"
href="https://bugs.webkit.org/show_bug.cgi?id=162497">bug 162497</a>
from <span class="vcard"><a class="email" href="mailto:mcatanzaro@igalia.com" title="Michael Catanzaro <mcatanzaro@igalia.com>"> <span class="fn">Michael Catanzaro</span></a>
</span></b>
<pre>(In reply to <a href="show_bug.cgi?id=162497#c11">comment #11</a>)
<span class="quote">> The full read out is at the start of the bug report.
>
> How do you show the local variables?</span >
'bt full' just like you showed there... in the first comment you have a backtrace without any line numbers or local variables, in this last comment you have a partial backtrace with local variables
Maybe it would be better to show you what we expect. Something like this:
<a href="https://bugzilla.redhat.com/attachment.cgi?id=1219931">https://bugzilla.redhat.com/attachment.cgi?id=1219931</a>
We don't usually need all threads, just one is usually enough, and we don't need all the library state at the bottom, just the output of 'bt full'. But that needs to be a complete stacktrace of the crashing thread from the top frame down to the bottom one. You need this every time you report a C/C++ crash to the developers of any application; there's nothing WebKit-specific about this. Most distros make this easy; in Fedora gdb tells you run a 'dnf debuginfo-install' command, you wait two minutes for the debuginfo to be installed, and then you get the stacktrace again. If you're building everything yourself in /usr/local with no debuginfo then consequently you've got to rebuild everything in the stack with -g to get the debuginfo.</pre>
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