Question 1 - 10 Points

• 1 point: You had two pipes upon which you call pipe().
• 1 point: Call fork(), and execlp() in the child.
• 0.5 points: Cardinal sin of exec handled.
• 1 point: Properly dup2() stdin/stdout in the child.
• 1 point: Close all pipe buffers in the child.
• 1 point: Close proper pipe buffers in the parent.
• 0.5 points: Parent has while 1 loop with proper structure.
• 1 point: Parent calls read()/write() to the proper fd's.
• 1 point: Parent makes proper read() call.
• 1 point: Parent prints the value correctly.
• 1 point: No extraneous dups/pipes/closes.

Question 2 - 5 Points

Question 3 - 12 Points

• Part A: Clearly demarcated areas for a, b, & c.
• Part A: B overruns its area.
• Part A: There is a final free chunk.
• Part A: A/B/C's sizes are implicitly correct.
• Part A: A & B's sizes are explicitly correct (24).
• Part A: The numbers look right (100-103, etc).
• Part A: The free chunk's size is 8112.
• Part A: The free chunk's pointers are NULL.
• Part B: A's size is 24 & has decent looking flink/blink's.
• Part B: B's size is 24 still.
• Part B: The free chunk's flink/blink pointers look right.
• Overall thre is no extraneous stuff (like i) in the heap.

Question 4 - 10 Points

Question 5 - 8 Points

• 2 points: You state that you are longjmping somewhere bad in memory.
• 2 points: You state that the return causes you to longjmp to a corrupted stack location.
• 1 point: ID-string is pointing to buf.
• 1.5 points: The fprintf may seg fault or print garbage.
• 1.5 points: The free may seg fault, bus error, or corrupt memory.