2018-02-17  Paul Thomas  <pault@gcc.gnu.org>

	PR fortran/84115
	* resolve.c (resolve_assoc_var): If a non-constant target expr.
	has no string length expression, make the associate variable
	into a deferred length, allocatable symbol.
	* trans-decl.c (gfc_is_reallocatable_lhs): Add and use a ptr to
	the symbol.
	* trans-stmt.c (trans_associate_var): Null and free scalar
	associate names that are allocatable. After assignment, remove
	the allocatable attribute to prevent reallocation.

2018-02-17  Paul Thomas  <pault@gcc.gnu.org>

	PR fortran/84115
	* gfortran.dg/associate_35.f90: Remove error, add stop n's and
	change to run.

From-SVN: r257781