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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - operator new(size_t) can't have hidden visibility"
href="https://bugs.llvm.org/show_bug.cgi?id=33473">33473</a>
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<th>Summary</th>
<td>operator new(size_t) can't have hidden visibility
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<th>Product</th>
<td>clang
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<th>Version</th>
<td>trunk
</td>
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<th>Hardware</th>
<td>PC
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<th>OS</th>
<td>Linux
</td>
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<th>Status</th>
<td>NEW
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<th>Severity</th>
<td>normal
</td>
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<th>Priority</th>
<td>P
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<th>Component</th>
<td>C++
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<th>Assignee</th>
<td>unassignedclangbugs@nondot.org
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<th>Reporter</th>
<td>thomasanderson@google.com
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<th>CC</th>
<td>dgregor@apple.com, llvm-bugs@lists.llvm.org
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<p>
<div>
<pre>Compile the attached test.cpp with clang 5.0.0:
$ clang++ -fvisibility=hidden -nostdinc++ -std=c++11 -c test.cpp -o test.o
-fvisibility=hidden should make all symbols hidden, but operator new is not:
$ objdump -t test.o | grep _Znwm
0000000000000000 g F .text 000000000000000f _Znwm
000000000000000f g F .text 0000000000000013 .hidden _ZnwmRK9nothrow_t
Adding 'attribute((visibility("hidden")))' on operator new only raises an
error:
test.cpp:4:16: error: visibility does not match previous declaration
__attribute__((visibility("hidden")))
^
note: previous attribute is here
1 error generated.
I was told that this behavior is determined by a built-in declaration that is
added here:
<a href="http://llvm-cs.pcc.me.uk/tools/clang/lib/Sema/SemaExprCXX.cpp#2668">http://llvm-cs.pcc.me.uk/tools/clang/lib/Sema/SemaExprCXX.cpp#2668</a></pre>
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