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<th>Priority</th>
<td>medium
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<tr>
<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW --- - sd-journal: check if the pointers passed are the same"
href="https://bugs.freedesktop.org/show_bug.cgi?id=55936">55936</a>
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<th>Assignee</th>
<td>systemd-bugs@lists.freedesktop.org
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</tr>
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<th>Summary</th>
<td>sd-journal: check if the pointers passed are the same
</td>
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<th>QA Contact</th>
<td>systemd-bugs@lists.freedesktop.org
</td>
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<th>Severity</th>
<td>trivial
</td>
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<th>Classification</th>
<td>Unclassified
</td>
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<tr>
<th>OS</th>
<td>All
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<th>Reporter</th>
<td>phomes@gmail.com
</td>
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<th>Hardware</th>
<td>Other
</td>
</tr>
<tr>
<th>Status</th>
<td>NEW
</td>
</tr>
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<th>Version</th>
<td>unspecified
</td>
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<th>Component</th>
<td>general
</td>
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<th>Product</th>
<td>systemd
</td>
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<p>
<div>
<pre>Created <span class=""><a href="attachment.cgi?id=68501" name="attach_68501" title="Check that the passed pointers are not the same">attachment 68501</a> <a href="attachment.cgi?id=68501&action=edit" title="Check that the passed pointers are not the same">[details]</a></span>
Check that the passed pointers are not the same
sd_journal_get_cutoff_realtime_usec(sd_journal* j, uint64_t* from, uint64_t*
to) checks that the parameters 'to' and 'from' are not both null at the same
time. That makes sense as it would not produce any result. Another way to get a
bad result is if the same pointer is passed as both 'to' and 'from'.
This is not a problem for any real code that I know of. I was just reading the
docs and wondering what would happen.
The attached patch adds a check for this in sd_journal_get_cutoff_realtime_usec
and sd_journal_get_cutoff_monotonic_usec.</pre>
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