https://bugs.llvm.org/show_bug.cgi?id=46424
Bug ID: 46424
Summary: false-positive -Wunused-local-typedef warning for use
in dependent scope specifier
Product: clang
Version: unspecified
Hardware: PC
OS: All
Status: NEW
Severity: normal
Priority: P
Component: C++11
Assignee: unassignedclangb...@nondot.org
Reporter: richard-l...@metafoo.co.uk
CC: blitzrak...@gmail.com, dgre...@apple.com,
erik.pilking...@gmail.com, llvm-bugs@lists.llvm.org,
richard-l...@metafoo.co.uk
Testcase from Jens Maurer:
template <class T>
struct B
{
void f();
};
template <class T>
struct D : public B<T>
{
using Base = B<T>;
void f();
};
template <class T>
void g()
{
D<T> d;
using X = typename D<T>::Base;
d.X::f();
}
... produces a bogus warning:
<source>:17:10: warning: unused type alias 'X' [-Wunused-local-typedef]
using X = typename D<T>::Base;
^
(Presumably we are not marking the FirstQualifierInScope as referenced after
doing the fallback lookup for X when parsing g().)
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