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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW --- - Compiling GNU Units hangs clang 3.4+"
href="http://llvm.org/bugs/show_bug.cgi?id=18330">18330</a>
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<th>Summary</th>
<td>Compiling GNU Units hangs clang 3.4+
</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>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
</td>
</tr>
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<th>Reporter</th>
<td>cybjit@gmail.com
</td>
</tr>
<tr>
<th>CC</th>
<td>llvmbugs@cs.uiuc.edu
</td>
</tr>
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<th>Classification</th>
<td>Unclassified
</td>
</tr></table>
<p>
<div>
<pre>Created <span class=""><a href="attachment.cgi?id=11784" name="attach_11784" title="reduced parse.tab.c">attachment 11784</a> <a href="attachment.cgi?id=11784&action=edit" title="reduced parse.tab.c">[details]</a></span>
reduced parse.tab.c
When compiling GNU Units 2.02 (<a href="http://www.gnu.org/software/units/">http://www.gnu.org/software/units/</a>) with clang
3.4 or 3.5, it hangs at parse.tab.c.
It was configured with CC=clang ./configure
It compiles and runs with clang 3.3.
I waited 15 minutes with 3.4 before giving up.
I am using clang 3.3, 3,4 and 3.5 from Ubuntu Trusty.
I also tried the Saucy packages from llvm.org/apt.
Turning off -O2 makes the compile succeeded.
I have tried to reduce a test-case.
clang -O -c units-clang-hang.c</pre>
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