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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW --- - Spurious -Wunneeded-internal-declaration warnings for separate compilation"
href="http://llvm.org/bugs/show_bug.cgi?id=17340">17340</a>
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<th>Summary</th>
<td>Spurious -Wunneeded-internal-declaration warnings for separate compilation
</td>
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<th>Product</th>
<td>clang
</td>
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<th>Version</th>
<td>3.3
</td>
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<th>Hardware</th>
<td>All
</td>
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<th>OS</th>
<td>All
</td>
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<th>Status</th>
<td>NEW
</td>
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<th>Severity</th>
<td>normal
</td>
</tr>
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<th>Priority</th>
<td>P
</td>
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<th>Component</th>
<td>C++
</td>
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<th>Assignee</th>
<td>unassignedclangbugs@nondot.org
</td>
</tr>
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<th>Reporter</th>
<td>akim.demaille@gmail.com
</td>
</tr>
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<th>CC</th>
<td>dgregor@apple.com, llvmbugs@cs.uiuc.edu
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<th>Classification</th>
<td>Unclassified
</td>
</tr></table>
<p>
<div>
<pre>In the following example, I get a warning with separate compilation, although
the function will be useful where the type foo is really instantiated.
$ cat foo.cc
#include <cstdlib>
static int debug_level()
{
return !!getenv("DEBUG");
};
template <typename T>
struct foo
{
foo() : debug_(debug_level()) {}
int debug_;
};
$ clang++-mp-3.3 -Wall /tmp/foo.cc -c
/tmp/foo.cc:3:12: warning: function 'debug_level' is not needed and will not be
emitted
[-Wunneeded-internal-declaration]
static int debug_level()
^
1 warning generated.
$ clang++-mp-3.3 --version
clang version 3.3 (tags/RELEASE_33/final)
Target: x86_64-apple-darwin12.5.0
Thread model: posix</pre>
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