basic_string.h (insert(iterator, _CharT), [...]): Avoid troubles with ADL, user defin...

basic_string.h (insert(iterator, _CharT), [...]): Avoid troubles with ADL, user defined operators and __normal_iterator.

2005-12-06  Paolo Carlini  <pcarlini@suse.de>

	* include/bits/basic_string.h (insert(iterator, _CharT),
	erase(iterator), erase(iterator, iterator)): Avoid troubles
	with ADL, user defined operators and __normal_iterator.
	* include/bits/stl_iterator.h (operator-(const __normal_iterator
	<_Iterator, _Container>&, const __normal_iterator<_Iterator,
	_Container>&)): Add overload for left and right iterators of
	the same type.
	* include/debug/safe_iterator.h (operator-(const _Safe_iterator
	<_Iterator, _Sequence>&, const _Safe_iterator<_Iterator,
	_Sequence>&)): Likewise.
	* testsuite/21_strings/basic_string/types/1.cc: New.

From-SVN: r108123