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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW --- - Report unrecognized arguments before reporting argument incompatibility"
href="http://llvm.org/bugs/show_bug.cgi?id=16679">16679</a>
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<th>Summary</th>
<td>Report unrecognized arguments before reporting argument incompatibility
</td>
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<th>Product</th>
<td>new-bugs
</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>MacOS X
</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
</td>
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<th>Assignee</th>
<td>unassignedbugs@nondot.org
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<th>Reporter</th>
<td>jruderman@gmail.com
</td>
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<th>CC</th>
<td>llvmbugs@cs.uiuc.edu
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<th>Classification</th>
<td>Unclassified
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<p>
<div>
<pre>What steps will reproduce the problem?
1. touch ~/Desktop/empty.cpp
2. $HOME/llvm/build/Release+Asserts/bin/clang++ -fsanitize=undefined
-fnosanitize=vptr -fno-rtti ~/Desktop/empty.cpp
What is the expected output? What do you see instead?
Expected:
clang: warning: argument unused during compilation: '-fnosanitize=vptr'
clang: error: invalid argument '-fsanitize=vptr' not allowed with '-fno-rtti'
What I got:
Only the error. As a result, I didn't realize I had left out a hyphen in the
no-sanitize argument, and thought something was broken.
What version of the product are you using? On what operating system?
LLVM r186884 on Mac OS X 10.8.x</pre>
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