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<base href="http://llvm.org/bugs/" />
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<body><table border="1" cellspacing="0" cellpadding="8">
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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW --- - Assertion `currentLoop->isLCSSAForm(*DT)' failed."
href="http://llvm.org/bugs/show_bug.cgi?id=18753">18753</a>
</td>
</tr>
<tr>
<th>Summary</th>
<td>Assertion `currentLoop->isLCSSAForm(*DT)' failed.
</td>
</tr>
<tr>
<th>Product</th>
<td>new-bugs
</td>
</tr>
<tr>
<th>Version</th>
<td>unspecified
</td>
</tr>
<tr>
<th>Hardware</th>
<td>PC
</td>
</tr>
<tr>
<th>OS</th>
<td>Linux
</td>
</tr>
<tr>
<th>Status</th>
<td>NEW
</td>
</tr>
<tr>
<th>Severity</th>
<td>normal
</td>
</tr>
<tr>
<th>Priority</th>
<td>P
</td>
</tr>
<tr>
<th>Component</th>
<td>new bugs
</td>
</tr>
<tr>
<th>Assignee</th>
<td>unassignedbugs@nondot.org
</td>
</tr>
<tr>
<th>Reporter</th>
<td>kcc@google.com
</td>
</tr>
<tr>
<th>CC</th>
<td>chandlerc@gmail.com, llvmbugs@cs.uiuc.edu
</td>
</tr>
<tr>
<th>Classification</th>
<td>Unclassified
</td>
</tr></table>
<p>
<div>
<pre>at r200919:
a;
b;
c[];
d;
e;
static
check_1minuseps () {
int f;
for (; sizeof 0; f++)
for (; d; d++)
for (; e; e++)
for (; a; a++) {
mpfr_prec_round (c[f]);
b || mpfr_equal_p ();
if (b) {
printf ("ia = %u\n", f);
exit (0);
}
}
}
main () {
check_1minuseps ();
}
clang -cc1 -triple x86_64-unknown-linux-gnu -emit-obj -O2 a.c
virtual bool {anonymous}::LoopUnswitch::runOnLoop(llvm::Loop*,
llvm::LPPassManager&): Assertion `currentLoop->isLCSSAForm(*DT)' failed.
test case reduced from mpfr-3.1.2
This is similar to <a class="bz_bug_link
bz_status_RESOLVED bz_closed"
title="RESOLVED FIXED - clang crashes on valid code at -O3 on x86_64-linux-gnu"
href="show_bug.cgi?id=18688">http://llvm.org/bugs/show_bug.cgi?id=18688</a>,
but happens after the fix.</pre>
</div>
</p>
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