decl.c (grokdeclarator): Use declarator->id_loc in five error_at calls.

decl.c (grokdeclarator): Use declarator->id_loc in five error_at calls.

/cp
2019-05-31  Paolo Carlini  <paolo.carlini@oracle.com>

	* decl.c (grokdeclarator): Use declarator->id_loc in five
	error_at calls.

/testsuite
2019-05-31  Paolo Carlini  <paolo.carlini@oracle.com>

	* g++.dg/cpp0x/alias-decl-18.C: Test location too.
	* g++.dg/cpp0x/udlit-nofunc-neg.C: Likewise.
	* g++.dg/parse/crash59.C: Likewise.
	* g++.dg/parse/error38.C: Likewise.
	* g++.dg/parse/error39.C: Likewise.
	* g++.dg/template/crash31.C: Likewise.
	* g++.dg/template/operator8.C: Likewise.
	* g++.dg/template/operator9.C: Likewise.

From-SVN: r271762