constexpr.c (ensure_literal_type_for_constexpr_object): Use DECL_SOURCE_LOCATION...

constexpr.c (ensure_literal_type_for_constexpr_object): Use DECL_SOURCE_LOCATION in error_at calls.

/cp
2018-11-15  Paolo Carlini  <paolo.carlini@oracle.com>

	* constexpr.c (ensure_literal_type_for_constexpr_object): Use
	DECL_SOURCE_LOCATION in error_at calls.

/testsuite
2018-11-15  Paolo Carlini  <paolo.carlini@oracle.com>

	* g++.dg/cpp0x/constexpr-diag3.C: Check locations too.
	* g++.dg/cpp0x/constexpr-ice19.C: Likewise.
	* g++.dg/cpp0x/constexpr-nonlit2.C: Likewise.
	* g++.dg/cpp1z/constexpr-lambda15.C: Likewise.
	* g++.dg/ext/constexpr-vla5.C: Likewise.
	* g++.dg/gomp/pr85134.C: Likewise.

From-SVN: r266192