[PATCH] Protect more algorithms from overloaded comma operators

[Jonathan Wakely <jwakely at redhat dot com>]

LWG 2133 makes it a requirement for some of the algorithms to protect
against overlaoded comma operators. This does so, and adapts some
tests to verify it, using our iterator wrappers. Those wrappers have a
member oeprator, but that only handles the case where the iterator is
the left operand, so I added extra deleted (non-member) functions to
handle iterators as the right operand.

	* include/bits/stl_algo.h (__find_if_not_n, generate_n): Cast to void
	to ensure overloaded comma not used.
	* include/bits/stl_algobase.h (__fill_n_a, equal): Likewise.
	* include/bits/stl_uninitialized.h (__uninitialized_fill_n)
	(__uninitialized_fill_n_a, __uninitialized_default_n_1)
	(__uninitialized_default_n_a, __uninitialized_copy_n)
	(__uninitialized_copy_n_pair): Likewise
	* testsuite/20_util/specialized_algorithms/memory_management_tools/1.cc:
	Use test iterator wrappers with overloaded comma operator.
	* testsuite/25_algorithms/fill_n/1.cc: Likewise.
	* testsuite/25_algorithms/generate_n/1.cc: New test.
	* testsuite/25_algorithms/stable_partition/1.cc: New test.
	* testsuite/util/testsuite_iterators.h (operator,): Add deleted
	non-member comma operator with iterator wrappers as right operand.

Tested powerpc64le-linux, committed to trunk.

Attachment: patch.txt
Description: Text document