Segmentation fault with fun-rec

[brutalsavage]

Description: Segmentation fault with func-rec

small code small.smt2 to reproduce:

(declare-fun x () Int)
(declare-fun z () Int)

(define-fun-rec fib-odd ((n Int)) Int
  (ite (<= n 0)
       0
     (ite (= n 1)
          1
        (+ (fib-even (- n 1)) (fib-odd (- n 2))))))

(define-fun-rec fib-even ((n Int)) Int
  (ite (<= n 0)
           0
     (ite (= n 1)
              0
          (+ (fib-odd (- n 1)) (fib-even (- n 2))))))

(assert (= (mod (+ (fib-even x)) 13) z))

(check-sat)

output

(error "line 9 column 28: unknown constant fib-even (Int) ")
Segmentation fault (core dumped)

Note: changing code to define-fun instead of define-fun-rec no longer segfaults

Command: running z3 (6c24a70) with debug build z3 small.smt2

[NikolajBjorner]

these are fuzz bugs for malformed input. It isn't clear spending bandwidth on these helps anybody.
I may be closing such bugs without further comments in the future.