PR c++/90010
	* gimple-ssa-sprintf.c (target_to_host): Fix handling of targstr
	with strlen in between hostsz-3 and hostsz-1 inclusive when no
	translation is needed, and when translation is needed, only append
	... if the string length is hostsz or more bytes long.  Avoid using
	strncpy or strcat.

	* gcc.dg/pr90010.c: New test.

From-SVN: r270246