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<base href="https://bugs.llvm.org/">
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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - Visibility attribute is ignored on definition"
href="https://bugs.llvm.org/show_bug.cgi?id=39379">39379</a>
</td>
</tr>
<tr>
<th>Summary</th>
<td>Visibility attribute is ignored on definition
</td>
</tr>
<tr>
<th>Product</th>
<td>clang
</td>
</tr>
<tr>
<th>Version</th>
<td>trunk
</td>
</tr>
<tr>
<th>Hardware</th>
<td>PC
</td>
</tr>
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<th>OS</th>
<td>All
</td>
</tr>
<tr>
<th>Status</th>
<td>NEW
</td>
</tr>
<tr>
<th>Severity</th>
<td>enhancement
</td>
</tr>
<tr>
<th>Priority</th>
<td>P
</td>
</tr>
<tr>
<th>Component</th>
<td>Frontend
</td>
</tr>
<tr>
<th>Assignee</th>
<td>unassignedclangbugs@nondot.org
</td>
</tr>
<tr>
<th>Reporter</th>
<td>ldionne@apple.com
</td>
</tr>
<tr>
<th>CC</th>
<td>llvm-bugs@lists.llvm.org
</td>
</tr></table>
<p>
<div>
<pre>In the following code, the visibility attribute appearing on the definition of
`bar()` appears to be dropped on the floor:
```
#define HIDDEN __attribute__((visibility("hidden")))
template <typename T>
struct A { static void bar(); };
template <typename T>
HIDDEN void A<T>::bar() { }
template void A<int>::bar();
```
Indeed, compiling with `clang++ -triple x86_64-unknown-linux-gnu -emit-llvm -o
- -` produces the following:
```
define weak_odr void @_ZN1AIiE3barEv() #0 comdat align 2 {
ret void
}
```
Instead, I would expect the following if the attribute were not ignored:
```
define weak_odr hidden void @_ZN1AIiE3barEv() #0 comdat align 2 {
ret void
}
```</pre>
</div>
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