http://llvm.org/bugs/show_bug.cgi?id=22434
Bug ID: 22434
Summary: clang confused by using directive in namespace in
linkage spec
Product: clang
Version: trunk
Hardware: All
OS: Linux
Status: NEW
Severity: normal
Priority: P
Component: C++
Assignee: [email protected]
Reporter: [email protected]
CC: [email protected], [email protected]
Classification: Unclassified
Given this code in g.cpp
extern "C" {
namespace A { struct S; }
namespace B { using namespace A; struct T { S *t; }; }
}
extern "C++" {
namespace C { struct U; }
namespace D { using namespace C; struct V { U *t; }; }
}
namespace E { struct W; }
namespace F { using namespace E; struct X { W *t; }; }
clang says
g.cpp:3:45: error: unknown type name 'S'; did you mean '::B::S'?
namespace B { using namespace A; struct T { S *t; }; }
^
::B::S
g.cpp:2:22: note: '::B::S' declared here
namespace A { struct S; }
^
g.cpp:7:45: error: unknown type name 'U'; did you mean '::D::U'?
namespace D { using namespace C; struct V { U *t; }; }
^
::D::U
g.cpp:6:22: note: '::D::U' declared here
namespace C { struct U; }
^
2 errors generated.
and that seems wrong to me, especially for the extern "C++" version.
Note that clang has no problem when the code is not in a linkage spec.
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