2004-10-13  Paolo Carlini  <pcarlini@suse.de>

	* include/bits/basic_string.tcc (_S_create): Use consistently
	the exponential policy, simplify.
	* testsuite/performance/21_strings/string_append_2.cc: New.

	* include/ext/array_allocator.h (allocate): Fix bad_alloc check.
	* testsuite/ext/array_allocator/2.cc: Fix wrt 64-bit archs (in
	that case sizeof(_Rep) == 24).

From-SVN: r88972