[Committed] A target in pointer initialization requires SAVE

[Steve Kargl]

In taking a look at PR fortran/77632, I stumbled acrossed
the testcase in the attached patch cause an ICE.  I originally
thought that it was realated to the topic of the PR, but is
in fact an unrelated bug.

If a variable is a target in a pointer initialization, then 
it must have the SAVE attribute.  A variable in PROGRAM, 
MODULE, or SUBMODULE scope is implicitly SAVEd.  So, the
patch explicitly sets the save attribute to SAVE_IMPLICIT.

2019-06-20  Steven G. Kargl  <kargl@gcc.gnu.org>

	PR fortran/77632
	* /decl.c (variable_decl): Mark a variable that is a target in pointer
	initialization when in PROGRAM, MODULE, or SUBMODULE scope with an
	implicit save.

2019-06-20  Steven G. Kargl  <kargl@gcc.gnu.org>

	PR fortran/77632
	* gfortran.dg/pr77632_1.f90: New test.

-- 
Steve
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