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<base href="https://llvm.org/bugs/" />
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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW " title="NEW --- - No -Wshadow Warning on Extern Functions" href="https://urldefense.proofpoint.com/v2/url?u=https-3A__llvm.org_bugs_show-5Fbug.cgi-3Fid-3D24243&d=AwMFaQ&c=8hUWFZcy2Z-Za5rBPlktOQ&r=pF93YEPyB-J_PERP4DUZOJDzFVX5ZQ57vQk33wu0vio&m=Oj-HDJNzTqIJ_Ug4sST5Mtk0KHQ4BAveInT1A1OJ5e4&s=Xtb3-UBE89YuCLbwQpCVz4_NS7ujrGF7UayMyQJ9xtw&e=">24243</a>
</td>
</tr>
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<th>Summary</th>
<td>No -Wshadow Warning on Extern Functions
</td>
</tr>
<tr>
<th>Product</th>
<td>clang
</td>
</tr>
<tr>
<th>Version</th>
<td>trunk
</td>
</tr>
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<th>Hardware</th>
<td>PC
</td>
</tr>
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<th>OS</th>
<td>Windows NT
</td>
</tr>
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<th>Status</th>
<td>NEW
</td>
</tr>
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<th>Severity</th>
<td>normal
</td>
</tr>
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<th>Priority</th>
<td>P
</td>
</tr>
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<th>Component</th>
<td>Frontend
</td>
</tr>
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<th>Assignee</th>
<td>unassignedclangbugs@nondot.org
</td>
</tr>
<tr>
<th>Reporter</th>
<td>chengniansun@gmail.com
</td>
</tr>
<tr>
<th>CC</th>
<td>llvmbugs@cs.uiuc.edu
</td>
</tr>
<tr>
<th>Classification</th>
<td>Unclassified
</td>
</tr></table>
<p>
<div>
<pre>$: cat t.c
extern void index2(void);
void foo3(void) {
void (*index2)(void);
}
$: clang-trunk -c t.c -Weverything -Wno-missing-prototypes -Wno-unused-variable
$: gcc-trunk -c -Wshadow t.c
t.c: In function ‘foo3’:
t.c:3:10: warning: declaration of ‘index2’ shadows a global declaration
[-Wshadow]
void (*index2)(void);
^
t.c:1:13: note: shadowed declaration is here
extern void index2(void);
^
$:</pre>
</div>
</p>
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