re PR middle-end/82976 (Error: non-trivial conversion at assignment since r254526)

re PR middle-end/82976 (Error: non-trivial conversion at assignment since r254526)

2018-04-07  Thomas Koenig  <tkoenig@gcc.gnu.org>
	Andrew Pinski <pinsika@gcc.gnu.org>

	PR middle-end/82976
	* match.pd: Use constant_boolean_node of correct type instead of
	boolean_true_node or boolean_false_node for simplifying
	pointer comparisons to zero.

2018-04-07  Thomas Koenig  <tkoenig@gcc.gnu.org>

	PR middle-end/82976
	* gfortran.dg/realloc_on_assign_16a.f90: New test.

Co-Authored-By: Andrew Pinski <pinskia@gcc.gnu.org>
From-SVN: r259212