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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW --- - False positive dereference null-dereference on destructor with 'noreturn'"
href="http://llvm.org/bugs/show_bug.cgi?id=15599">15599</a>
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<th>Summary</th>
<td>False positive dereference null-dereference on destructor with 'noreturn'
</td>
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<th>Product</th>
<td>clang
</td>
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<th>Version</th>
<td>3.2
</td>
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<th>Hardware</th>
<td>PC
</td>
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<th>OS</th>
<td>All
</td>
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<th>Status</th>
<td>NEW
</td>
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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>Static Analyzer
</td>
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<th>Assignee</th>
<td>kremenek@apple.com
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<th>Reporter</th>
<td>andrewjcg@gmail.com
</td>
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<th>CC</th>
<td>llvmbugs@cs.uiuc.edu
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<th>Classification</th>
<td>Unclassified
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<p>
<div>
<pre>I appear to be getting a false positive null dereference warning when running
'clang --analyze' on the following code segment:
#include <stdlib.h>
class Test {
public:
Test() {}
__attribute__((noreturn)) ~Test(){
abort();
}
};
__attribute__((noreturn)) void test () {
abort();
}
void myfunc(int * t) {
if (t == nullptr) {
Test a(); // causes null dereference warning below on '*t = 4'
//test(); // works
}
*t = 4;
}
Since the destructor aborts, it appears (unless I'm missing something) that the
program could never actually dereference a null.</pre>
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