Lab Report 2: Making Commits

First Change

We made these changes in response to this failure inducing input. That input led to this symptom:

Here, the bug was that the program always updated currentIndex to closeParen + 1. The failure-inducing input had symbols after the last closing parenthesis, so the while loop ran again after the last link, and currentIndex would be assigned as 0 because closeParen was assigned as -1 when another closing parenthesis was not found. This resulted in the symptom of an infinite loop.

Second Change

We made these changes in response to this failure inducing input. The input led to this output:

The bug was that the program used the presence of an open bracket, closing bracket, open parenthesis, and closing parenthesis to identify a link. The input included an image. Since the image had these elements, the symptom of the program adding the image name to the list of links, which was then printed, arose.

Third Change

We made these changes in response to this failure inducing input. The input led to this output:

The bug was that the program did not check the space between the closing parenthesis and open bracket. The failure-inducing input had the correct link format except that there were characters in between these two symbols. Because of the bug combined with the nearly-correct format, the symptom of page.com being added to the list of links and then printed arose.