[PATCH] PR fortran/91650 -- BOZ cannot be an output IO list item

[Steve Kargl]

The attached patch has been tested on x86_64-*-freebsd.
I plan to commit this patch tomorrow if there are no objections.

A BOZ literal constant cannot appear in an output IO list.  By
default, the patch will generate an error.  The -fallow-invalid-boz
option can be used to degrade the error into an warning.  The
resulting executable then has historic broken gfortran behavior.

2019-09-03  Steven G. Kargl  <kargl@gcvc.gnu.org>

	PR fortran/91650
	* io.c (match_io_element):  An output IO list item cannot be a BOZ.

2019-09-03  Steven G. Kargl  <kargl@gcvc.gnu.org>

	PR fortran/91650
	* gfortran.dg/pr91650_1.f90: New test.
	* gfortran.dg/pr91650_2.f90: Ditto.

-- 
Steve
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