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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - alpha.unix.Chroot is unusable with chroot() error checking"
href="https://bugs.llvm.org/show_bug.cgi?id=35349">35349</a>
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<th>Summary</th>
<td>alpha.unix.Chroot is unusable with chroot() error checking
</td>
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<th>Product</th>
<td>clang
</td>
</tr>
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<th>Version</th>
<td>trunk
</td>
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<th>Hardware</th>
<td>PC
</td>
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<th>OS</th>
<td>All
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<th>Status</th>
<td>NEW
</td>
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<th>Severity</th>
<td>enhancement
</td>
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<th>Priority</th>
<td>P
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<th>Component</th>
<td>Static Analyzer
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<th>Assignee</th>
<td>dcoughlin@apple.com
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<th>Reporter</th>
<td>tss@iki.fi
</td>
</tr>
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<th>CC</th>
<td>llvm-bugs@lists.llvm.org
</td>
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<div>
<pre>Created <span class=""><a href="attachment.cgi?id=19444" name="attach_19444" title="test program">attachment 19444</a> <a href="attachment.cgi?id=19444&action=edit" title="test program">[details]</a></span>
test program
It seems to be impossible to check for chroot() return value and handle it,
without alpha.unix.Chroot complaining: warning: No call of chdir("/")
immediately after chroot
I even attempted to use chdir("/") in the error handling code path just after
saving errno, but even that fails. See attached test.c program.
scan-build -enable-checker alpha.unix gcc test.c -o test
test2.c:7:20: warning: No call of chdir("/") immediately after chroot
int orig_errno = errno;
^~~~~
I guess I could just trust that chdir("/") doesn't change the errno, but that
seems a bit fragile.</pre>
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