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g++.dg
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cpp0x
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Wunused-parm.C
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// PR c++/57211
// { dg-do compile { target c++11 } }
// { dg-options "-Wunused-parameter" }
template
<
class
T
>
T
&&
move
(
T
&);
struct
A
{
struct
B
{
B
&
operator
=(
B
&&);
};
B f
;
A
&
operator
=(
A
&&
p
)
=
default
;
};
int
main
()
{
A a
;
A b
;
b
=
move
(
a
);
}