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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - flexible array member in an otherwise empty struct"
href="https://bugs.llvm.org/show_bug.cgi?id=38236">38236</a>
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<th>Summary</th>
<td>flexible array member in an otherwise empty struct
</td>
</tr>
<tr>
<th>Product</th>
<td>clang
</td>
</tr>
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<th>Version</th>
<td>trunk
</td>
</tr>
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<th>Hardware</th>
<td>PC
</td>
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<th>OS</th>
<td>Linux
</td>
</tr>
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<th>Status</th>
<td>NEW
</td>
</tr>
<tr>
<th>Severity</th>
<td>enhancement
</td>
</tr>
<tr>
<th>Priority</th>
<td>P
</td>
</tr>
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<th>Component</th>
<td>C++
</td>
</tr>
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<th>Assignee</th>
<td>unassignedclangbugs@nondot.org
</td>
</tr>
<tr>
<th>Reporter</th>
<td>zhonghao@pku.org.cn
</td>
</tr>
<tr>
<th>CC</th>
<td>dgregor@apple.com, llvm-bugs@lists.llvm.org
</td>
</tr></table>
<p>
<div>
<pre>The code is as follow:
struct ordered_tasks
{
int * pop ();
};
struct A
{
ordered_tasks * tasks[];
int * pop ();
};
int pop_first_bucket;
int * A::pop ()
{
int * out;
int cur_bucket = 0;
do {
if (tasks[0]) {
out = tasks[cur_bucket]->pop();
if (out)
return out;
}
} while (pop_first_bucket);
return 0;
}
clang++ accepts the code, but g++ rejects it:
code0.cpp:8:24: error: flexible array member 'A::tasks' in an otherwise empty
'struct A'
ordered_tasks * tasks[];
^</pre>
</div>
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