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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - add warnings for possible ambiguity in logical expressions not currently covered"
href="https://bugs.llvm.org/show_bug.cgi?id=47010">47010</a>
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<th>Summary</th>
<td>add warnings for possible ambiguity in logical expressions not currently covered
</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>Windows NT
</td>
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<th>Status</th>
<td>NEW
</td>
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<th>Severity</th>
<td>enhancement
</td>
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<th>Priority</th>
<td>P
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<th>Component</th>
<td>Frontend
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<th>Assignee</th>
<td>unassignedclangbugs@nondot.org
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<th>Reporter</th>
<td>vince.a.bridgers@gmail.com
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<th>CC</th>
<td>llvm-bugs@lists.llvm.org, neeilans@live.com, richard-llvm@metafoo.co.uk
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<p>
<div>
<pre>During review of <a href="https://reviews.llvm.org/D85097">https://reviews.llvm.org/D85097</a>, it came out in comments that
the current cases are not covered by clang warnings for -Wparentheses, and the
specific warning that might cover these. I'd prefer to finish
<a href="https://reviews.llvm.org/D85097">https://reviews.llvm.org/D85097</a>, which covers ambiguous chained compare
operations, like x<y<z, and pick this up after as a separate patch.
Filing as a reminder to pick this up later, and use as reference in reply to
comments in <a href="https://reviews.llvm.org/D85097">https://reviews.llvm.org/D85097</a>.
// FIXME - These do not currently trigger any warnings
b = (p1 == p2 < p3); // maybe intentional, but definitely deserving of
a warning
b = (p1 == p2 == p3); // definitely buggy and deserving of a warning
b = (p1 != p2 != p3); // definitely buggy and deserving of a warning
b = (p1 < p2 == p3 < p4); // maybe intentional, but definitely deserving of
a warning
b = (p1 == p2 < p3 == p4); // definitely buggy and deserving of a warning</pre>
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