Work around a GCC 4.7-specific issue: due to implementing older rules for implicit declarations of move operations, GCC 4.7 would find that SelectPiece has neither a move constructor nor a copy constructor. The copy constructor was (correctly) deleted because the class has a member of move-only type, and the move constructor was (incorrectly, per current C++ rules) not provided because the class has a copy-only base class (in turn because it explicitly declares a destructor).
Work around a GCC 4.7-specific issue: due to implementing older rules for
implicit declarations of move operations, GCC 4.7 would find that SelectPiece
has neither a move constructor nor a copy constructor. The copy constructor was
(correctly) deleted because the class has a member of move-only type, and the
move constructor was (incorrectly, per current C++ rules) not provided because
the class has a copy-only base class (in turn because it explicitly declares a
destructor).


git-svn-id: ffe668792ed300d6c2daa1f6eba2e0aa28d7ec6c@281363 91177308-0d34-0410-b5e6-96231b3b80d8

apple/swift-clang,llvm-mirror/clang,llvm-mirror/clang,llvm-mirror/clang,llvm-mirror/clang,apple/swift-clang,llvm-mirror/clang,apple/swift-clang,apple/swift-clang,apple/swift-clang,llvm-mirror/clang,llvm-mirror/clang,apple/swift-clang,apple/swift-clang,llvm-mirror/clang,apple/swift-clang,apple/swift-clang,apple/swift-clang,llvm-mirror/clang,llvm-mirror/clang