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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - Incorrect -Warray-bounds-pointer-arithmetic warning with INT_MIN"
href="https://bugs.llvm.org/show_bug.cgi?id=40103">40103</a>
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<th>Summary</th>
<td>Incorrect -Warray-bounds-pointer-arithmetic warning with INT_MIN
</td>
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<th>Product</th>
<td>clang
</td>
</tr>
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<th>Version</th>
<td>unspecified
</td>
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<th>Hardware</th>
<td>PC
</td>
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<th>OS</th>
<td>Windows NT
</td>
</tr>
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<th>Status</th>
<td>NEW
</td>
</tr>
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<th>Severity</th>
<td>enhancement
</td>
</tr>
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<th>Priority</th>
<td>P
</td>
</tr>
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<th>Component</th>
<td>-New Bugs
</td>
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<th>Assignee</th>
<td>unassignedclangbugs@nondot.org
</td>
</tr>
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<th>Reporter</th>
<td>efriedma@codeaurora.org
</td>
</tr>
<tr>
<th>CC</th>
<td>bruno.bugs.contact@gmail.com, htmldeveloper@gmail.com, llvm-bugs@lists.llvm.org, neeilans@live.com, richard-llvm@metafoo.co.uk
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<p>
<div>
<pre>Testcase (build with -Warray-bounds-pointer-arithmetic):
char x[0x80000000];
char *nowarn() { return x - (-0x7FFFFFFF-1LL); }
char *warn() { return x - (-0x7FFFFFFF-1); }
<stdin>:3:23: warning: the pointer decremented by -2147483648 refers before the
beginning of the array [-Warray-bounds-pointer-arithmetic]
char *warn() { return x - (-0x7FFFFFFF-1); }
^ ~~~~~~~~~~~~~
<stdin>:1:1: note: array 'x' declared here
char x[0x80000000];
^
Found by inspection while reviewing <a href="https://reviews.llvm.org/D55862">https://reviews.llvm.org/D55862</a> .</pre>
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