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<base href="https://bugs.llvm.org/">
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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - clang warning: unknown warning option '-Wno-old-style-declaration'"
href="https://bugs.llvm.org/show_bug.cgi?id=40616">40616</a>
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<th>Summary</th>
<td>clang warning: unknown warning option '-Wno-old-style-declaration'
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<th>Product</th>
<td>clang
</td>
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<th>Version</th>
<td>7.0
</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>
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<th>Priority</th>
<td>P
</td>
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<th>Component</th>
<td>-New Bugs
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<th>Assignee</th>
<td>unassignedclangbugs@nondot.org
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<th>Reporter</th>
<td>trankimthang279@gmail.com
</td>
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<th>CC</th>
<td>htmldeveloper@gmail.com, llvm-bugs@lists.llvm.org, neeilans@live.com, richard-llvm@metafoo.co.uk
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<div>
<pre>OVERVIEW:
There seems to be problem with clang and warning option
'-Wno-old-style-declaration'.
testaccount@testmachine:~$ uname -a
Linux testmachine 4.15.0-45-generic #48-Ubuntu SMP Tue Jan 29 16:28:13 UTC
2019 x86_64 x86_64 x86_64 GNU/Linux
testaccount@testmachine:~$ clang-7 -v
clang version 7.0.0-3~ubuntu0.18.04.1 (tags/RELEASE_700/final)
Target: x86_64-pc-linux-gnu
Thread model: posix
InstalledDir: /usr/bin
Found candidate GCC installation: /usr/bin/../lib/gcc/i686-linux-gnu/8
Found candidate GCC installation: /usr/bin/../lib/gcc/x86_64-linux-gnu/7
Found candidate GCC installation:
/usr/bin/../lib/gcc/x86_64-linux-gnu/7.3.0
Found candidate GCC installation: /usr/bin/../lib/gcc/x86_64-linux-gnu/8
Found candidate GCC installation: /usr/lib/gcc/i686-linux-gnu/8
Found candidate GCC installation: /usr/lib/gcc/x86_64-linux-gnu/7
Found candidate GCC installation: /usr/lib/gcc/x86_64-linux-gnu/7.3.0
Found candidate GCC installation: /usr/lib/gcc/x86_64-linux-gnu/8
Selected GCC installation: /usr/bin/../lib/gcc/x86_64-linux-gnu/7.3.0
Candidate multilib: .;@m64
Selected multilib: .;@m64
STEP TO REPRODUCE:
testaccount@testmachine:~$ echo "__clang__ __GNUC__ __GNUC_MINOR__
__GNUC_PATCHLEVEL__ __clang_major__ __clang_minor__ __clang_patchlevel__" |
/usr/bin/clang-7 -E -P -Wno-old-style-declaration -
warning: unknown warning option '-Wno-old-style-declaration'; did you mean
'-Wno-out-of-line-declaration'? [-Wunknown-warning-option]
1 4 2 1 7 0 0
1 warning generated.
ADDITIONAL INFOS:
This issue also appears on clang-5 and clang-6.
GCC (>=4.3) does not have this problem however.</pre>
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