2b87f3318c
This force-enables perfect forwarding call wrapper semantics whenever the extra arguments of a partially applied range adaptor aren't all trivially copyable, so as to avoid incurring unnecessary copies of potentially expensive-to-copy objects (such as std::function objects) when invoking the adaptor. PR libstdc++/100940 libstdc++-v3/ChangeLog: * include/std/ranges (__adaptor::_Partial): For the "simple" forwarding partial specializations, also require that the extra arguments are trivially copyable. * testsuite/std/ranges/adaptors/100577.cc (test04): New test. |
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