re PR fortran/84640 (gcc/fortran/simplify.c:2587:9: runtime error: pointer index...

re PR fortran/84640 (gcc/fortran/simplify.c:2587:9: runtime error: pointer index expression with base 0x0000090de160 overflowed to 0xffffffffc0632960)

 2018-10-06  Thomas Koenig  <tkoenig@gcc.gnu.org>

	PR fortran/84640
	* simplify.c (gfc_simplify_cshift): Extend size of hs_ex and ss_ex
	by one. Set extents one past the array boundaries to zero to avoid
	warning with instrumented compiler.
	(gfc_simplify_eoshift): Likewise, only for ss_ex.

From-SVN: r264898