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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW --- - clang++ crashes when compiling c++ code, after eating all available memory (with -O2 activated)."
href="http://llvm.org/bugs/show_bug.cgi?id=17520">17520</a>
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<th>Summary</th>
<td>clang++ crashes when compiling c++ code, after eating all available memory (with -O2 activated).
</td>
</tr>
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<th>Product</th>
<td>clang
</td>
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<th>Version</th>
<td>3.2
</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>
</tr>
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<th>Severity</th>
<td>normal
</td>
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<th>Priority</th>
<td>P
</td>
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<th>Component</th>
<td>C++
</td>
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<th>Assignee</th>
<td>unassignedclangbugs@nondot.org
</td>
</tr>
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<th>Reporter</th>
<td>David.Tschumperle@gmail.com
</td>
</tr>
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<th>CC</th>
<td>dgregor@apple.com, llvmbugs@cs.uiuc.edu
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<th>Classification</th>
<td>Unclassified
</td>
</tr></table>
<p>
<div>
<pre>When trying to compile a minimal version of my project with clang++ (with
option -O2 specified), it eats all the available RAM (4Gb RAM + 4Gb Swap) to
compile a single .cpp file. Without '-O2', the compilation succeeds (in
seconds).
My project is using a lot of template functions, and I suspect this can be
related to this issue (I had similar issues with previous versions of g++ in
the past, that has been fixed, so g++ compiles it flawlessly now).
I attach a .zip file containing the sources to reproduce the problem, as well
as the two output files generated by clang++ (in subfolder 'clang-generated/').
This is what I get when typing 'make' on my machine (ASUS Zenbook 64bits, 4Gb
RAM, running Ubuntu 13.04) :
<span class="quote">> dtschump@xxxxx:/tmp/gmic_clang$ make
> clang++ -o gmic gmic.cpp -O2 -Dgmic_build -Dcimg_display=0 -Dgmic_float_only -Dgmic_main -lpthread
> clang: error: unable to execute command: Killed
> clang: error: clang frontend command failed due to signal (use -v to see invocation)
> Ubuntu clang version 3.2-1~exp9ubuntu1 (tags/RELEASE_32/final) (based on LLVM 3.2)
> Target: x86_64-pc-linux-gnu
> Thread model: posix
> clang: note: diagnostic msg: PLEASE submit a bug report to <a href="http://llvm.org/bugs/">http://llvm.org/bugs/</a> and include the crash backtrace, preprocessed source, and associated run script.
> clang: note: diagnostic msg:
> ********************</span >
<span class="quote">> PLEASE ATTACH THE FOLLOWING FILES TO THE BUG REPORT:
> Preprocessed source(s) and associated run script(s) are located at:
> clang: note: diagnostic msg: /tmp/gmic-XLlwLm.cpp
> clang: note: diagnostic msg: /tmp/gmic-XLlwLm.sh
> clang: note: diagnostic msg:</span >
<span class="quote">> ********************
> make: *** [all] Error 254</span >
The memory usage increases drastically after one minute, until reaching more
than 8Gb. Then it crashes.
This is my first bug report to clang++, I hope all necessary files are here.
Just let me know if you need more information.
Thanks.</pre>
</div>
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