Declare call_impl() as && (#2057)

rhaschke · wjakob · commit 370a2ae2b364 · 2020-01-05T15:49:24.000+01:00
diff --git a/include/pybind11/cast.h b/include/pybind11/cast.h
@@ -1978,7 +1978,7 @@ class argument_loader {
     }
 
     template <typename Return, typename Func, size_t... Is, typename Guard>
-    Return call_impl(Func &&f, index_sequence<Is...>, Guard &&) {
+    Return call_impl(Func &&f, index_sequence<Is...>, Guard &&) && {
         return std::forward<Func>(f)(cast_op<Args>(std::move(std::get<Is>(argcasters)))...);
     }
 

Original file line number	Diff line number	Diff line change
`@@ -1978,7 +1978,7 @@ class argument_loader {`
`1978`	`1978`	`}`
`1979`	`1979`
`1980`	`1980`	`template <typename Return, typename Func, size_t... Is, typename Guard>`
`1981`		`- Return call_impl(Func &&f, index_sequence<Is...>, Guard &&) {`
	`1981`	`+ Return call_impl(Func &&f, index_sequence<Is...>, Guard &&) && {`
`1982`	`1982`	`return std::forward<Func>(f)(cast_op<Args>(std::move(std::get<Is>(argcasters)))...);`
`1983`	`1983`	`}`
`1984`	`1984`