Below is a dialogue between software developers, the first one used ChatGPT in his solution of code task and makes a comment,   the second one gives him reply on his solution. Write a reply that appropriately answers the comment.

### Comment:
 related issue_no response_ googling result chatgpt result your question herewhile running test_rational_arithmetic function, i found an error which is as followthread assignmentsassignmentsymbolic_differentiation_gradetesttest_rational_arithmetic has overflowed its stackfatal runtime error stack overflowerror test failed, to rerun pass p cs libcaused byprocess didnt exit successfully homeubuntucstargetdebugdepscscead assignmentsassignmentsymbolic_differentiation_gradetesttest_rational_arithmetic exact noc### Reply:
first, try printing the values of arugments a, b coming into gcd. by e.g. inserting println!a ? b ?, a, b in the first line of the function gcdthen, see the printed values of a, b.examine the pattern of values and see the gcd is called at correct places or doing the computation correctly.