re PR fortran/45777 (Alias analysis broken for arrays where LHS or RHS is a component...

re PR fortran/45777 (Alias analysis broken for arrays where LHS or RHS is a component ref)

2011-01-08  Thomas Koenig  <tkoenig@gcc.gnu.org>

	PR fortran/45777
	* symbol.c (gfc_symbols_could_alias):  Strip gfc_ prefix,
	make static and move in front of its only caller, to ...
	* trans-array.c (symbols_could_alias): ... here.
	Pass information about pointer and target status as
	arguments.  Allocatable arrays don't alias anything
	unless they have the POINTER attribute.
	(gfc_could_be_alias):  Keep track of pointer and target
	status when following references.  Also check if typespecs
	of components match those of other components or symbols.

2011-01-08  Thomas Koenig  <tkoenig@gcc.gnu.org>

	PR fortran/45777
	* gfortran.dg/dependency_39.f90:  New test.

From-SVN: r168596