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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 --- - Clang cannot consume -Og"
href="https://llvm.org/bugs/show_bug.cgi?id=23187">23187</a>
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<th>Summary</th>
<td>Clang cannot consume -Og
</td>
</tr>
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<th>Product</th>
<td>clang
</td>
</tr>
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<th>Version</th>
<td>3.6
</td>
</tr>
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<th>Hardware</th>
<td>PC
</td>
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<th>OS</th>
<td>All
</td>
</tr>
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<th>Status</th>
<td>NEW
</td>
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<th>Severity</th>
<td>normal
</td>
</tr>
<tr>
<th>Priority</th>
<td>P
</td>
</tr>
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<th>Component</th>
<td>-New Bugs
</td>
</tr>
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<th>Assignee</th>
<td>unassignedclangbugs@nondot.org
</td>
</tr>
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<th>Reporter</th>
<td>noloader@gmail.com
</td>
</tr>
<tr>
<th>CC</th>
<td>llvmbugs@cs.uiuc.edu
</td>
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<th>Classification</th>
<td>Unclassified
</td>
</tr></table>
<p>
<div>
<pre>Clang is having trouble consuming -Og.
-Og was added to GCC a couple of years ago (2012 or so). It enables
optimizations that don't effect debugging sessions. That is, you still get
analysis but you don't see a lot of "optimized out" under the debugger. Read
more at
<a href="https://gcc.gnu.org/onlinedocs/gcc-4.9.2/gcc/Optimize-Options.html#Optimize-Options">https://gcc.gnu.org/onlinedocs/gcc-4.9.2/gcc/Optimize-Options.html#Optimize-Options</a>.
**********
$ /usr/local/bin/clang --version
clang version 3.6.0 (tags/RELEASE_360/final)
Target: x86_64-apple-darwin12.6.0
Thread model: posix
**********
/usr/local/bin/clang -I. -I.. -I../include -DOPENSSL_THREADS -D_REENTRANT -g3
-Og -Wall -fsanitize=undefined -fsanitize=address -DDSO_DLFCN -DHAVE_DLFCN_H
-arch i386 -DL_ENDIAN -DOPENSSL_BN_ASM_PART_WORDS -DOPENSSL_IA32_SSE2
-DOPENSSL_BN_ASM_MONT -DOPENSSL_BN_ASM_GF2m -DSHA1_ASM -DSHA256_ASM
-DSHA512_ASM -DMD5_ASM -DRMD160_ASM -DAES_ASM -DVPAES_ASM -DWHIRLPOOL_ASM
-DGHASH_ASM -DECP_NISTZ256_ASM -c -o cryptlib.o cryptlib.c
error: invalid integral value 'g' in '-Og'
error: invalid integral value 'g' in '-Og'
make[1]: *** [cryptlib.o] Error 1
make: *** [build_crypto] Error 1</pre>
</div>
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