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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW --- - False positive with separate test for global variable?"
href="http://llvm.org/bugs/show_bug.cgi?id=19210">19210</a>
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<th>Summary</th>
<td>False positive with separate test for global variable?
</td>
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<th>Product</th>
<td>clang
</td>
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<th>Version</th>
<td>unspecified
</td>
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<th>Hardware</th>
<td>PC
</td>
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<th>OS</th>
<td>All
</td>
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<th>Status</th>
<td>NEW
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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>icculus@icculus.org
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<th>CC</th>
<td>llvmbugs@cs.uiuc.edu
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<th>Classification</th>
<td>Unclassified
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<p>
<div>
<pre>(Tested against checker-276)
This appears to be a false positive:
<a href="https://buildbot.libsdl.org/sdl-static-analysis/sdl-macosx-static-analysis/sdl-macosx-static-analysis-8/report-0a5600.html#EndPath">https://buildbot.libsdl.org/sdl-static-analysis/sdl-macosx-static-analysis/sdl-macosx-static-analysis-8/report-0a5600.html#EndPath</a>
In Step #2, it assumes "_this" is NULL, but with this assumption, we would have
returned from SDL_SetWindowPosition() in the CHECK_WINDOW_MAGIC macro at the
top of the function, before Step #1.
I'm not sure if Clang isn't considering that because "_this" is a static
variable at the top of this source module instead of a local variable/argument.
Thanks,
--ryan.</pre>
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