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<base href="http://llvm.org/bugs/" />
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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW --- - Incorrect error message when attempting to overload within extern "C" block"
href="http://llvm.org/bugs/show_bug.cgi?id=18741">18741</a>
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<th>Summary</th>
<td>Incorrect error message when attempting to overload within extern "C" block
</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>Macintosh
</td>
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<th>OS</th>
<td>MacOS X
</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>-New Bugs
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<th>Assignee</th>
<td>unassignedclangbugs@nondot.org
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<th>Reporter</th>
<td>continuation@gmail.com
</td>
</tr>
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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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<p>
<div>
<pre>Compiling the following program with clang 3.3 (and 3.5 somebody told me):
extern "C" {
void Foo(void *arg1) {
}
bool Foo(void *arg1, void *arg2) {
return true;
}
}
...produces the error message "error: functions that differ only in their
return type cannot be overloaded". This is confusing, because of course they
do not differ only in their return type. I think the actual reason the
overloading is not allowed is that it is within an extern "C" block. (I
originally hit this in a large header file where I didn't realize the function
was in an extern "C" block.)
If the second Foo is changed to have a return type void, then you get the error
message "error: conflicting types for 'Foo'", which still doesn't mention that
types only conflict because of the extern "C" block, but at least it isn't
wrong.</pre>
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