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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW --- - -Wmissing-prototypes does not work"
href="http://llvm.org/bugs/show_bug.cgi?id=18563">18563</a>
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<th>Summary</th>
<td>-Wmissing-prototypes does not work
</td>
</tr>
<tr>
<th>Product</th>
<td>clang
</td>
</tr>
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<th>Version</th>
<td>trunk
</td>
</tr>
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<th>Hardware</th>
<td>PC
</td>
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<th>OS</th>
<td>Linux
</td>
</tr>
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<th>Status</th>
<td>NEW
</td>
</tr>
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<th>Severity</th>
<td>normal
</td>
</tr>
<tr>
<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>
</tr>
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<th>Reporter</th>
<td>chengniansun@gmail.com
</td>
</tr>
<tr>
<th>CC</th>
<td>llvmbugs@cs.uiuc.edu
</td>
</tr>
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<th>Classification</th>
<td>Unclassified
</td>
</tr></table>
<p>
<div>
<pre>The function "bar()" does not have a prototype. But clang does not warn it.
Please refer to the following steps.
$: cat no-prototype.c
static void bar();
static void foo(void) { bar(); }
void bar(void) {}
int main() {
foo();
return 0;
}
$: clang-trunk -Weverything no-prototype.c
$: clang-trunk -Wmissing-prototypes no-prototype.c
$: clang-trunk --version
clang version 3.5 (trunk 199549)
Target: x86_64-unknown-linux-gnu
Thread model: posix
$: gcc-trunk-warn no-prototype.c
no-prototype.c:5:6: warning: no previous prototype for ‘bar’
[-Wmissing-prototypes]
void bar(void) {}
^
$:</pre>
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