pt.c (check_explicit_specialization): Use cp_expr_loc_or_input_loc.

pt.c (check_explicit_specialization): Use cp_expr_loc_or_input_loc.

/cp
2019-09-23  Paolo Carlini  <paolo.carlini@oracle.com>

	* pt.c (check_explicit_specialization): Use cp_expr_loc_or_input_loc.
	(process_partial_specialization): Likewise.
	(convert_nontype_argument_function): Likewise.
	(invalid_tparm_referent_p): Likewise.
	(convert_template_argument): Likewise.
	(check_valid_ptrmem_cst_expr): Tidy.

/testsuite
2019-09-23  Paolo Carlini  <paolo.carlini@oracle.com>

	* g++.dg/cpp0x/pr68724.C: Check location(s) too.
	* g++.dg/cpp0x/variadic38.C: Likewise.
	* g++.dg/cpp1z/nontype2.C: Likewise.
	* g++.dg/parse/explicit1.C: Likewise.
	* g++.dg/template/crash11.C: Likewise.
	* g++.dg/template/non-dependent8.C: Likewise.
	* g++.dg/template/nontype-array1.C: Likewise.
	* g++.dg/template/nontype3.C: Likewise.
	* g++.dg/template/nontype8.C: Likewise.
	* g++.dg/template/partial5.C: Likewise.
	* g++.dg/template/spec33.C: Likewise.
	* g++.old-deja/g++.pt/memtemp64.C: Likewise.
	* g++.old-deja/g++.pt/spec20.C: Likewise.
	* g++.old-deja/g++.pt/spec21.C: Likewise.
	* g++.old-deja/g++.robertl/eb103.C: Likewise.

From-SVN: r276064