http://llvm.org/bugs/show_bug.cgi?id=15362
Bug ID: 15362
Summary: clang++ incorrectly accepts "typename" in
"using-declaration" without a nested-name-specifier
Product: clang
Version: 3.1
Hardware: PC
OS: Windows NT
Status: NEW
Severity: enhancement
Priority: P
Component: C++
Assignee: [email protected]
Reporter: [email protected]
CC: [email protected], [email protected]
Classification: Unclassified
According to the C++11 standard, the production of the rule using-declaration
is:
using typename[opt] nested-name-specifier unqualified-id ;
using :: unqualified-id ;
But it seems that clang (3.1 at least) accepts also this syntax:
using typename :: unqualified-id ;
Which is not part of the standard.
The following little code illustrates this:
typedef int T;
namespace foo {
int T;
namespace bar {
using typename ::T; // < this should be rejected because of the presence of
'typename'
T a;
}
}
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