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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - availability attributes override visibility"
href="https://bugs.llvm.org/show_bug.cgi?id=33796">33796</a>
</td>
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<tr>
<th>Summary</th>
<td>availability attributes override visibility
</td>
</tr>
<tr>
<th>Product</th>
<td>clang
</td>
</tr>
<tr>
<th>Version</th>
<td>unspecified
</td>
</tr>
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<th>Hardware</th>
<td>PC
</td>
</tr>
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<th>OS</th>
<td>All
</td>
</tr>
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<th>Status</th>
<td>NEW
</td>
</tr>
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<th>Severity</th>
<td>enhancement
</td>
</tr>
<tr>
<th>Priority</th>
<td>P
</td>
</tr>
<tr>
<th>Component</th>
<td>C++
</td>
</tr>
<tr>
<th>Assignee</th>
<td>unassignedclangbugs@nondot.org
</td>
</tr>
<tr>
<th>Reporter</th>
<td>nicolasweber@gmx.de
</td>
</tr>
<tr>
<th>CC</th>
<td>dgregor@apple.com, llvm-bugs@lists.llvm.org
</td>
</tr></table>
<p>
<div>
<pre>We're moving Chrome to @available, which requires tagging some of our code with
API_AVAILABLE(10.10). However, that seems to also make classes visible, which
we don't want:
$ cat test.cc
#define F
class F Foo {
void f();
};
void Foo::f() {}
$ bin/clang -c test.cc -mmacosx-version-min=10.10 -fvisibility=hidden
-fvisibility-inlines-hidden && ld -dylib -o libtest.dylib test.o && nm
libtest.dylib
ld: warning: -macosx_version_min not specified, assuming 10.10
0000000000000fb0 t __ZN3Foo1fEv
$ cat test.cc
#define F __attribute__((availability(macos, introduced=10.11)))
class F Foo {
void f();
};
void Foo::f() {}
$ bin/clang -c test.cc -mmacosx-version-min=10.10 -fvisibility=hidden
-fvisibility-inlines-hidden && ld -dylib -o libtest.dylib test.o && nm
libtest.dylib
ld: warning: -macosx_version_min not specified, assuming 10.10
0000000000000fb0 T __ZN3Foo1fEv
That's hopefully just a bug, and not by design?</pre>
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