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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW --- - [fuzz] Assertion ... & "Declaration context must already be complete!"' failed."
href="http://llvm.org/bugs/show_bug.cgi?id=21830">21830</a>
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<th>Summary</th>
<td>[fuzz] Assertion ... & "Declaration context must already be complete!"' failed.
</td>
</tr>
<tr>
<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>
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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>
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<th>Assignee</th>
<td>unassignedclangbugs@nondot.org
</td>
</tr>
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<th>Reporter</th>
<td>sami.liedes@iki.fi
</td>
</tr>
<tr>
<th>CC</th>
<td>llvmbugs@cs.uiuc.edu
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<th>Classification</th>
<td>Unclassified
</td>
</tr></table>
<p>
<div>
<pre>Created <span class=""><a href="attachment.cgi?id=13471" name="attach_13471" title="test case">attachment 13471</a> <a href="attachment.cgi?id=13471&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:
ctx-must-be-complete.cpp:1:1: error: C++ requires a type specifier for all
declarations
fn1() {
^
clang-3.6: tools/clang/lib/Sema/SemaLookup.cpp:1595: bool
clang::Sema::LookupQualifiedName(clang::LookupResult &, clang::DeclContext *,
bool): Assertion `(!isa<TagDecl>(LookupCtx) || LookupCtx->isDependentContext()
|| cast<TagDecl>(LookupCtx)->isCompleteDefinition() ||
cast<TagDecl>(LookupCtx)->isBeingDefined()) && "Declaration context must
already be complete!"' failed.</pre>
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