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<base href="https://llvm.org/bugs/" />
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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW --- - Uninitialized memory read in printf is not detected by memory sanitizer"
href="https://llvm.org/bugs/show_bug.cgi?id=28789">28789</a>
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<th>Summary</th>
<td>Uninitialized memory read in printf is not detected by memory sanitizer
</td>
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<th>Product</th>
<td>clang
</td>
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<th>Version</th>
<td>3.8
</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>
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<th>Assignee</th>
<td>unassignedclangbugs@nondot.org
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</tr>
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<th>Reporter</th>
<td>halyavin@chromium.org
</td>
</tr>
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<th>CC</th>
<td>kcc@google.com, llvm-bugs@lists.llvm.org
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<th>Classification</th>
<td>Unclassified
</td>
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<p>
<div>
<pre>The following program doesn't crash when compiled with memory sanitizer
(without libc instrumentation).
#include <stdio.h>
int main() {
int x = 1;
printf("%lld %lld %lld %lld %lld %lld\n", x, x, x, x, x, x);
}
It prints "1 1 1 1 1 <huge_number>" but sanitizer is silent.</pre>
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