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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW --- - Clang crashes when bitfield-width contains a functional cast expression for copy-constructing a record"
href="http://llvm.org/bugs/show_bug.cgi?id=22238">22238</a>
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<th>Summary</th>
<td>Clang crashes when bitfield-width contains a functional cast expression for copy-constructing a record
</td>
</tr>
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<th>Product</th>
<td>clang
</td>
</tr>
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<th>Version</th>
<td>unspecified
</td>
</tr>
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<th>Hardware</th>
<td>PC
</td>
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<th>OS</th>
<td>All
</td>
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<th>Status</th>
<td>NEW
</td>
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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>C++
</td>
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<th>Assignee</th>
<td>unassignedclangbugs@nondot.org
</td>
</tr>
<tr>
<th>Reporter</th>
<td>david.majnemer@gmail.com
</td>
</tr>
<tr>
<th>CC</th>
<td>dgregor@apple.com, llvmbugs@cs.uiuc.edu
</td>
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<th>Classification</th>
<td>Unclassified
</td>
</tr></table>
<p>
<div>
<pre>consider:
extern "C" {
struct T {
char c;
} a;
struct B {
x : T(a);
};
}
we diagnose with:
t.cpp:6:3: error: unknown type name 'x'
x : T(a);
before crashing with:
lib/AST/ExprConstant.cpp:8565: llvm::APSInt
clang::Expr::EvaluateKnownConstInt(const clang::ASTContext&,
llvm::SmallVectorImpl<std::pair<clang::SourceLocation,
clang::PartialDiagnostic> >*) const: Assertion `Result && "Could not evaluate
expression"' failed</pre>
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