September 30, 1999 ECS 153 — FALL 1999 Page 1
Version of September 30, 1999 12:59 pm
Homework 1
Points
: 100
Due Date
: Monday, October 11, 1999 at 11:59PM
1. (
7 points
) Chapter 1, exercise 1
2. (
14 points
) Chapter 1, exercise 2
3. (
5 points
) Chapter 1, exercise 3
4. (
12 points
) Chapter 1, exercise 5
5. (
6 points
) Chapter 1, exercise 7
6. (
6 points
) Chapter 1, exercise 13
7. (
6 points
) Chapter 1, exercise 14
8. (
9 points
) Robust Programming handout, exercise 2
9. (
5 points
) Robust Programming handout, exercise 17
10. (
30 points
)
This exercise asks you to look at a standard UNIX C library for problems with robustness. Please
write three programs that use functions from the standard I/O library. You are to call the functions in such a way
that they cause the program to crash, or generate unpredictable results. To demonstrate “crashing,” use
gdb
out-
put to show that the crash occured within the standard I/O library function. To demonstrate “unpredictable
results,” run your program (without changes) on at least two different types of computers in the CSIF (for exam-
ple, once on a DEC and once on an SGI) and show that the results of the function differ (you can use
gdb
, or print
the relevant values).
Important note:you must supply the correct type of argument for the functions. You may
not, for example, pass a character pointer where a file pointer is expected.
Please submit both the programs and typescripts for each program showing the crash or the unpredictable results.
