re PR tree-optimization/42781 (ICE in pt_solutions_same_restrict_base, at tree-ssa-structalias.c:5072)

2010-01-18  Richard Guenther  <rguenther@suse.de>

	PR tree-optimization/42781
	* tree-ssa-structalias.c (find_what_var_points_to): Skip
	restrict processing only if the original variable was
	artificial.

	* gfortran.fortran-torture/compile/pr42781.f90: New testcase.

From-SVN: r156006