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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - clang fails to diagnose an ambiguous "using" clause"
href="https://bugs.llvm.org/show_bug.cgi?id=37797">37797</a>
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<th>Summary</th>
<td>clang fails to diagnose an ambiguous "using" clause
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<th>Product</th>
<td>clang
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<th>Version</th>
<td>trunk
</td>
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<th>Hardware</th>
<td>PC
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<th>OS</th>
<td>Linux
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<th>Status</th>
<td>NEW
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<th>Severity</th>
<td>normal
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<th>Priority</th>
<td>P
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<th>Component</th>
<td>C++11
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<th>Assignee</th>
<td>unassignedclangbugs@nondot.org
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<th>Reporter</th>
<td>pickensd@synopsys.com
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<th>CC</th>
<td>dgregor@apple.com, llvm-bugs@lists.llvm.org
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<pre>The following C++ code should cause a compilation error, but it does not.
clang 3.8 did properly diagnose the error, but it somehow regressed since then.
-------------------------------------------
namespace A { struct x {}; }
namespace B { int x = 13; }
namespace C { using A::x; using B::x; }
namespace D { using A::x; }
using namespace C;
using namespace D;
int main(){ return x; } //<-- x should be ambiguous!</pre>
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