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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW --- - Add Clang warning about extern declarations in C and C++ files"
href="http://llvm.org/bugs/show_bug.cgi?id=21982">21982</a>
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<th>Summary</th>
<td>Add Clang warning about extern declarations in C and C++ files
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<th>Product</th>
<td>new-bugs
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<th>Version</th>
<td>unspecified
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<th>Hardware</th>
<td>PC
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<th>OS</th>
<td>Windows NT
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<th>Status</th>
<td>NEW
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<th>Severity</th>
<td>normal
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<th>Priority</th>
<td>P
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<th>Component</th>
<td>new bugs
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<th>Assignee</th>
<td>unassignedbugs@nondot.org
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<th>Reporter</th>
<td>eugene.zelenko@gmail.com
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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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<pre>Hi!
I think will be good idea if Clang will produce warnings when extern
declarations are placed in C/C++ files (not included from other files).
Such declarations are definitely belong to headers, so their appearance in
source files are indication of bad coding practices.
Intel compiler produces such warnings as "warning #1419: external declaration
in primary source file".
Eugene.</pre>
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