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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW --- - [fuzz] Assertion `begin[0] == '\'' && "Invalid token lexed"' failed."
href="http://llvm.org/bugs/show_bug.cgi?id=21825">21825</a>
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<th>Summary</th>
<td>[fuzz] Assertion `begin[0] == '\'' && "Invalid token lexed"' failed.
</td>
</tr>
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<th>Product</th>
<td>clang
</td>
</tr>
<tr>
<th>Version</th>
<td>trunk
</td>
</tr>
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<th>Hardware</th>
<td>PC
</td>
</tr>
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<th>OS</th>
<td>Linux
</td>
</tr>
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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>
</tr>
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<th>Component</th>
<td>-New Bugs
</td>
</tr>
<tr>
<th>Assignee</th>
<td>unassignedclangbugs@nondot.org
</td>
</tr>
<tr>
<th>Reporter</th>
<td>sami.liedes@iki.fi
</td>
</tr>
<tr>
<th>CC</th>
<td>llvmbugs@cs.uiuc.edu
</td>
</tr>
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<th>Classification</th>
<td>Unclassified
</td>
</tr></table>
<p>
<div>
<pre>Created <span class=""><a href="attachment.cgi?id=13466" name="attach_13466" title="test case">attachment 13466</a> <a href="attachment.cgi?id=13466&action=edit" title="test case">[details]</a></span>
test case
Fuzzing discovered that the attached test case, when given as input to
clang -fno-crash-diagnostics -std=c++11 -xc++ -c -emit-llvm
causes this assertion failure:
invalid-token-lexed.cpp:1:5: error: builtin feature check macro requires a
parenthesized identifier
#if __has_feature('x'
^
clang-3.6: tools/clang/lib/Lex/LiteralSupport.cpp:1041:
clang::CharLiteralParser::CharLiteralParser(const char *, const char *,
clang::SourceLocation, clang::Preprocessor &, tok::TokenKind): Assertion
`begin[0] == '\'' && "Invalid token lexed"' failed.</pre>
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