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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - False positive reported by static analyzer: "Potential memory leak""
href="https://bugs.llvm.org/show_bug.cgi?id=33694">33694</a>
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<th>Summary</th>
<td>False positive reported by static analyzer: "Potential memory leak"
</td>
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<th>Product</th>
<td>clang
</td>
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<th>Version</th>
<td>2.7
</td>
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<th>Hardware</th>
<td>Macintosh
</td>
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<th>OS</th>
<td>MacOS X
</td>
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<th>Status</th>
<td>NEW
</td>
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<th>Severity</th>
<td>normal
</td>
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<th>Priority</th>
<td>P
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<th>Component</th>
<td>Static Analyzer
</td>
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<th>Assignee</th>
<td>kremenek@apple.com
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<th>Reporter</th>
<td>jaf@meyersound.com
</td>
</tr>
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<th>CC</th>
<td>llvm-bugs@lists.llvm.org
</td>
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<pre>Created <span class=""><a href="attachment.cgi?id=18754" name="attach_18754" title="Self-contained example program that reproduces the false-positive when you compile it using scan-build">attachment 18754</a> <a href="attachment.cgi?id=18754&action=edit" title="Self-contained example program that reproduces the false-positive when you compile it using scan-build">[details]</a></span>
Self-contained example program that reproduces the false-positive when you
compile it using scan-build
Hi all,
When I run the attached trivial example program through clang's scan-build
utility, I get a warning message that I believe is a false positive:
$ scan-build g++ bogus_memory_leak_warning.cpp
scan-build: Using '/Users/jaf/checker-279/bin/clang' for static analysis
bogus_memory_leak_warning.cpp:26:4: warning: Potential memory leak
}
^
1 warning generated.
scan-build: 1 bug found.
scan-build: Run 'scan-view
/var/folders/1x/wkkcw0xx6dl54r2326vk0lh80000gn/T/scan-build-2017-07-05-132302-32588-1'
to examine bug reports.
AFAICT the code in the trivial example program doesn't have any actual memory
leaks, but SA thinks that it does. (If I'm wrong about that, I apologize).
Also note that if I comment out line 25 in the attached file, the
false-positive warning goes away; however I think the presence of that line
should not make any difference regarding whether the program has a memory leak
or not.
(This example application is just a minimal self-contained example, of course;
the actual codebase where I see this sort of false positive pop up is much
larger, but this example is easier to understand and debug)
-Jeremy</pre>
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