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<base href="http://llvm.org/bugs/" />
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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW --- - ASSERT when building record layout for anonymous structures."
href="http://llvm.org/bugs/show_bug.cgi?id=15591">15591</a>
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<th>Summary</th>
<td>ASSERT when building record layout for anonymous structures.
</td>
</tr>
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<th>Product</th>
<td>lldb
</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>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>
<tr>
<th>Priority</th>
<td>P
</td>
</tr>
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<th>Component</th>
<td>All Bugs
</td>
</tr>
<tr>
<th>Assignee</th>
<td>lldb-dev@cs.uiuc.edu
</td>
</tr>
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<th>Reporter</th>
<td>samueldotj@gmail.com
</td>
</tr>
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<th>Classification</th>
<td>Unclassified
</td>
</tr></table>
<p>
<div>
<pre>Assertion failure in lldb:
llvm/tools/clang/lib/AST/RecordLayoutBuilder.cpp:2271: uint64_t <anonymous
namespace>::RecordLayoutBuilder::updateExternalFieldOffset(const
clang::FieldDecl *, uint64_t): Assertion `ExternalFieldOffsets.find(Field) !=
ExternalFieldOffsets.end() && "Field does not have an external offset"' failed.
Aborted (core dumped)
I am able to reproduce the problem with the following program.
$ cat test.c
typedef struct {
int dummy;
}type_y;
typedef struct {
type_y y;
}type_z;
int main(int argc, char *argv[])
{
type_z *z = 0;
return 0;
}
$ gcc -O0 -g3 ./test.c
$ lldb a.out
Current executable set to 'a.out' (x86_64).
(lldb) p *((type_z *)0)
lldb: llvm/tools/clang/lib/AST/RecordLayoutBuilder.cpp:2271: uint64_t
<anonymous namespace>::RecordLayoutBuilder::updateExternalFieldOffset(const
clang::FieldDecl *, uint64_t): Assertion `ExternalFieldOffsets.find(Field) !=
ExternalFieldOffsets.end() && "Field does not have an external offset"' failed.</pre>
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