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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW --- - Thread Safety Analysis "guarded_by" attribute doesn't work for struct fields in C code"
href="http://llvm.org/bugs/show_bug.cgi?id=20403">20403</a>
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<th>Summary</th>
<td>Thread Safety Analysis "guarded_by" attribute doesn't work for struct fields in C code
</td>
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<th>Product</th>
<td>clang
</td>
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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>Linux
</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
</td>
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<th>Component</th>
<td>Frontend
</td>
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<th>Assignee</th>
<td>unassignedclangbugs@nondot.org
</td>
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<th>Reporter</th>
<td>matthew@dempsky.org
</td>
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<th>CC</th>
<td>llvmbugs@cs.uiuc.edu
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<th>Classification</th>
<td>Unclassified
</td>
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<p>
<div>
<pre>$ cat demo.c
struct mutex {
int x;
};
struct guarded_int {
struct mutex mu;
int value __attribute__((guarded_by(mu)));
};
$ clang -c demo.c
demo.c:7:38: error: use of undeclared identifier 'mu'
int value __attribute__((guarded_by(mu)));
^
1 error generated.
Clang compiles the code okay with "-x c++", so it seems to be a bug in how
Thread Safety Analysis is wired into the C frontend.</pre>
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