https://bugs.llvm.org/show_bug.cgi?id=44711
Bug ID: 44711
Summary: __reference_binds_to_temporary is missing binding an
rvalue reference to a prvalue
Product: clang
Version: trunk
Hardware: PC
OS: Windows NT
Status: NEW
Severity: enhancement
Priority: P
Component: C++
Assignee: unassignedclangb...@nondot.org
Reporter: barry.rev...@gmail.com
CC: blitzrak...@gmail.com, dgre...@apple.com,
erik.pilking...@gmail.com, llvm-bugs@lists.llvm.org,
richard-l...@metafoo.co.uk
This:
static_assert(__reference_binds_to_temporary(int&&, int));
Fails, the implementation doesn't consider this to be a reference binding to a
temporary (the implementation is in terms of isDirectReferenceBinding).
While this particular case isn't important for std::tuple (where we'll have
already materialized the temporary on the constructor boundary, so the
right-hand side would be int&& already), it is important for the INVOKE<R>
machinery -- where we might want to reject std::function<int&&()>([]{ return
42; }).
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