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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW --- - Compilation error in namespace alias (7.3.2) due to r253283"
href="https://llvm.org/bugs/show_bug.cgi?id=25731">25731</a>
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<th>Summary</th>
<td>Compilation error in namespace alias (7.3.2) due to r253283
</td>
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<th>Product</th>
<td>clang
</td>
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<th>Version</th>
<td>unspecified
</td>
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<th>Hardware</th>
<td>PC
</td>
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<th>OS</th>
<td>Windows NT
</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
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<th>Component</th>
<td>C++
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<th>Assignee</th>
<td>unassignedclangbugs@nondot.org
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<th>Reporter</th>
<td>sgundapa@codeaurora.org
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</tr>
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<th>CC</th>
<td>dgregor@apple.com, llvm-bugs@lists.llvm.org
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<th>Classification</th>
<td>Unclassified
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<div>
<pre>Created <span class=""><a href="attachment.cgi?id=15394" name="attach_15394" title="Test case">attachment 15394</a> <a href="attachment.cgi?id=15394&action=edit" title="Test case">[details]</a></span>
Test case
As per standard
7.3.2 Namespace alias
In a declarative region, a namespace-alias-definition can be used to redefine a
namespace-alias declared in
that declarative region to refer only to the namespace to which it already
refers. [ Example: the following
declarations are well-formed:
namespace Company_with_very_long_name { / ... / }
namespace CWVLN = Company_with_very_long_name;
namespace CWVLN = Company_with_very_long_name; // OK: duplicate
namespace CWVLN = CWVLN;
—end example ]
The offending commit is r253283
I have attached a simple test.cpp to reproduce the error
$ clang++ -c test.cpp
/tmp/test.cpp:10:11: error: reference to 'alias' is ambiguous
int i = alias::var;
^
/tmp/test.cpp:9:13: note: candidate found by name lookup is 'alias'
namespace alias = sgundapa;
^
/tmp/test.cpp:8:13: note: candidate found by name lookup is 'alias'
namespace alias = sgundapa;
^
1 error generated.</pre>
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