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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW --- - crash at some source files with gcc's -O > 0"
href="http://llvm.org/bugs/show_bug.cgi?id=18367">18367</a>
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<th>Summary</th>
<td>crash at some source files with gcc's -O > 0
</td>
</tr>
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<th>Product</th>
<td>dragonegg
</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>Windows XP
</td>
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<th>Status</th>
<td>NEW
</td>
</tr>
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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>baldrick@free.fr
</td>
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<th>Reporter</th>
<td>mirek.kaim@gmail.com
</td>
</tr>
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<th>CC</th>
<td>llvmbugs@cs.uiuc.edu
</td>
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<th>Classification</th>
<td>Unclassified
</td>
</tr></table>
<p>
<div>
<pre>Created <span class=""><a href="attachment.cgi?id=11810" name="attach_11810" title="compilation log">attachment 11810</a> <a href="attachment.cgi?id=11810&action=edit" title="compilation log">[details]</a></span>
compilation log
When trying to recompile gcc 4.6.4 with itself with dragonegg enabled (cygwin,
gcc patched to support dll plugins), it crashes at some files - mostly at
libgcc.
gcc configure flags: --enable-shared --enable-static --disable-bootstrap
--with-arch=pentium3 --with-tune=pentium3 --enable-languages=ada,c,c++,fortran
--disable-graphite --enable-lto --enable-threads=posix --disable-win32-registry
--enable-plugin --build=pentium3-pc-cygwin
llvm configure flags: --enable-optimized --disable-assertions --enable-shared
--enable-libffi --enable-ltdl-install --disable-docs --build=pentium3-pc-cygwin
dragonegg compiled with llvm plugins enabled (doesn't seem to make a
difference)
llvm and dragonegg 3.4rc3, CFLAGS in the compilation log.
Adding -O0 prevents crash from happening (despite level 3 optimizations enabled
for dragonegg for both ir-optimize and codegen-optimize using CFLAGS), so it is
clearly gcc messing something up. Still, the crash happens regardless of
ir-optimize/codegen-optimize levels for gcc's -O > 0, so if one wants to use
both dragonegg and gcc optimizations, that's something to consider.</pre>
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