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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 - warning: Attempt to free released memory that can't be freed"
href="https://bugs.llvm.org/show_bug.cgi?id=38068">38068</a>
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<th>Summary</th>
<td>warning: Attempt to free released memory that can't be freed
</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>
<tr>
<th>OS</th>
<td>Linux
</td>
</tr>
<tr>
<th>Status</th>
<td>NEW
</td>
</tr>
<tr>
<th>Severity</th>
<td>normal
</td>
</tr>
<tr>
<th>Priority</th>
<td>P
</td>
</tr>
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<th>Component</th>
<td>Static Analyzer
</td>
</tr>
<tr>
<th>Assignee</th>
<td>dcoughlin@apple.com
</td>
</tr>
<tr>
<th>Reporter</th>
<td>vcato1701@yahoo.com
</td>
</tr>
<tr>
<th>CC</th>
<td>llvm-bugs@lists.llvm.org
</td>
</tr></table>
<p>
<div>
<pre>The following code produces a warning
class test {
public:
test()
: allocated(new int),
x(1)
{
}
~test()
{
if (x==0) {
delete allocated;
}
}
test f() const
{
test t1(*this);
{
test t2(*this);
}
return t1;
}
private:
int *allocated;
const int x;
};
<source>:12:9: warning: Attempt to free released memory
delete allocated;
The analyzer believes that the memory will be released twice even though it can
never be released even once. The analyzer doesn't seem to recognize that a
const member that can only be initialized to 1 can never be 0.</pre>
</div>
</p>
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