tree 3b0aa0a1c9458a0f535f189fd982e8cc854243fa
parent ed77dcb9be76e592b62449c75a5e751485514afd
author Jonathan Wakely <jwakely@redhat.com> 1669030255 +0000
committer Jonathan Wakely <jwakely@redhat.com> 1669052802 +0000

libstdc++: Reduce size of std::bind_front(F) result

When there are no bound arguments to a std::bind_front call we don't
need the overhead of compiling, initializing, and accessing an empty
tuple.

libstdc++-v3/ChangeLog:

	* include/std/functional (_Bind_front0): New class template.
	(_Bind_front_t): Use _Bind_front0 when there are no bound
	arguments.
	* testsuite/20_util/function_objects/bind_front/107784.cc:
	New test.