Fortran: improve array component description in runtime error message [PR30802]

Runtime error messages for array bounds violation shall use the following
scheme for a coherent, abridged description of arrays or array components
of derived types:
(1) If x is an ordinary array variable, use "x"
(2) if z is a DT scalar and x an array component at level 1, use "z%x"
(3) if z is a DT scalar and x an array component at level > 1, or
    if z is a DT array and x an array (at any level), use "z...%x"
Use a new helper function abridged_ref_name for construction of that name.

gcc/fortran/ChangeLog:

	PR fortran/30802
	* trans-array.cc (abridged_ref_name): New helper function.
	(trans_array_bound_check): Use it.
	(array_bound_check_elemental): Likewise.
	(gfc_conv_array_ref): Likewise.

gcc/testsuite/ChangeLog:

	PR fortran/30802
	* gfortran.dg/bounds_check_17.f90: Adjust pattern.
	* gfortran.dg/bounds_check_fail_8.f90: New test.

0 files changed, 0 insertions, 0 deletions