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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - Converting between pointers to signed and unsigned _ExtInt causes crash"
href="https://bugs.llvm.org/show_bug.cgi?id=49416">49416</a>
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<th>Summary</th>
<td>Converting between pointers to signed and unsigned _ExtInt causes crash
</td>
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<th>Product</th>
<td>clang
</td>
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<th>Version</th>
<td>trunk
</td>
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<th>Hardware</th>
<td>PC
</td>
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<th>OS</th>
<td>Linux
</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
</td>
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<th>Component</th>
<td>C
</td>
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<th>Assignee</th>
<td>unassignedclangbugs@nondot.org
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<th>Reporter</th>
<td>wilcoxjay@gmail.com
</td>
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<th>CC</th>
<td>blitzrakete@gmail.com, dgregor@apple.com, erik.pilkington@gmail.com, llvm-bugs@lists.llvm.org, richard-llvm@metafoo.co.uk
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<p>
<div>
<pre>The following code causes clang trunk to crash.
// -----------------------------
// <a href="https://godbolt.org/z/z138v6">https://godbolt.org/z/z138v6</a>
// -----------------------------
void f(unsigned _ExtInt(32)* n);
void g(_ExtInt(32)* n) {
f(n);
}
// -----------------------------
It's unclear to me whether this program is intended to be supported by _ExtInt
or not, but in either case, it should not cause a crash.
Inserting a cast seems to work around the problem:
// -----------------------------
// <a href="https://godbolt.org/z/nKKPY7">https://godbolt.org/z/nKKPY7</a>
// -----------------------------
void f(unsigned _ExtInt(32)* n);
void g(_ExtInt(32)* n) {
f((unsigned _ExtInt(32)*)n);
}
// -----------------------------</pre>
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</p>
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