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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - Clang Segmentation Fault with 2D Array."
href="https://bugs.llvm.org/show_bug.cgi?id=46639">46639</a>
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<th>Summary</th>
<td>Clang Segmentation Fault with 2D Array.
</td>
</tr>
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<th>Product</th>
<td>new-bugs
</td>
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<th>Version</th>
<td>10.0
</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>
</tr>
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<th>Priority</th>
<td>P
</td>
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<th>Component</th>
<td>new bugs
</td>
</tr>
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<th>Assignee</th>
<td>unassignedbugs@nondot.org
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</tr>
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<th>Reporter</th>
<td>kdesnos@insa-rennes.fr
</td>
</tr>
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<th>CC</th>
<td>htmldeveloper@gmail.com, llvm-bugs@lists.llvm.org
</td>
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<p>
<div>
<pre>Created <span class=""><a href="attachment.cgi?id=23704" name="attach_23704" title="cpp and sh files generated before dump.">attachment 23704</a> <a href="attachment.cgi?id=23704&action=edit" title="cpp and sh files generated before dump.">[details]</a></span>
cpp and sh files generated before dump.
Hi,
When using 2D array with clang, I found a way to cause a segmentation fault of
the clang compiler (checked 10 on my WSL) and on the trunk version with
godbolt.
The minimal example is the following :
```
class A {
public:
~A(){} // No custom destructor => No error
};
int main() {
auto a = new A[2][3];
A (*b) [] = (A (*)[])a; // Adding dimension [3] solves the error too.
delete[] b;
return 0;
}
```
This code compiles without warning nor errors with MSVC 19.24 and gcc 7.5. I do
not mind the error or warning from clang, but the seg fault that follows is an
issue.
Attached is the cpp and sh generated by clang on crash.
Best,
Karol</pre>
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