re PR objc/7993 (private variables cannot be shadowed in subclasses)

re PR objc/7993 (private variables cannot be shadowed in subclasses)

2004-06-01  Nicola Pero  <nicola@brainstorm.co.uk>

 	Fix PR objc/7993:
	* objc-act.c (is_private): Do not emit the 'instance variable %s
	is declared private' error.
	(is_public): Emit the error after calling is_private.
	(lookup_objc_ivar): If the instance variable is private, return 0
	- the instance variable is invisible here.
testsuite:
	* objc.dg/private-1.m, objc-dg/private-2.m: New testcases.

From-SVN: r82532