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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW --- - False Positive in "The result of the '<<' expression is undefined""
href="http://llvm.org/bugs/show_bug.cgi?id=17634">17634</a>
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<th>Summary</th>
<td>False Positive in "The result of the '<<' expression is undefined"
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<th>Product</th>
<td>clang
</td>
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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>Linux
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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>hiraditya@msn.com
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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>For the following program I get the report
Location: line 9, column 11
Description: The result of the '<<' expression is undefined
int foo(int a, int b) {
int x, s;
int z = 0;
while (b<=a) {
s = 0;
while ((b<<s) <= a) {
s++;
}
x = 1 << (s-1); // Line 9
z += x;
}
return z;
}</pre>
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