2010-01-08  Richard Guenther  <rguenther@suse.de>

	PR lto/42528
	* c.opt (fsigned-char): Also let LTO handle this option.
	(funsigned-char): Likewise.

	lto/
	* lto-lang.c (lto_handle_option): Handle -f[un]signed-char.
	(lto_init): Do not init char_type_node in a standard way
	but according to flag_signed_char.

	* gcc.dg/lto/20100103-1_0.c: New testcase.
	* gcc.dg/lto/20100103-2_0.c: Likewise.

From-SVN: r155740