# define constraintList_isUndefined(e) ((e) == constraintList_undefined)
# define constraintList_isError(e) ((e) == constraintList_undefined)
-extern constraintList constraintList_addListFree (/*@returned@*/ constraintList, /*@only@*/ constraintList) ;
+extern constraintList constraintList_single (/*@only@*/ constraint) ;
+
+extern constraintList constraintList_addListFree (/*@returned@*/ constraintList, /*@only@*/ constraintList) ;
extern constraintList constraintList_preserveCallInfo (/*@returned@*/ constraintList p_c, /*@observer@*/ /*@dependent@*/ exprNode p_fcn) ;
/*@iter constraintList_elements (sef constraintList x, yield exposed constraint el); @*/