func go/types.argErrPos

2 uses

	go/types (current package)
		builtins.go#L81: 			check.errorf(argErrPos(call), WrongArgCount, invalidOp+"%s arguments for %v (expected %d, found %d)", msg, call, bin.nargs, nargs)
		util.go#L47: func argErrPos(call *ast.CallExpr) positioner { return inNode(call, call.Rparen) }