This folder contains a working but not fuzz-safe RPN calculator application.
main.cpp: Naive implementation that can still be crashed by the fuzzer
- Build and fuzz the app
$ nix-shell
$ make fuzzIt is possible that AFL emits error messages instead of fuzzing. Read these messages and follow their advice.
Fix the file main.cpp so that it withstands long times of fuzzing.
For every crash, AFL will create a file in out/crashes. Each file contains
input on which the RPN calculator crashed. Examine such inputs, run the program
manually without the fuzzer with them, analyze the cause for the crash and
fix it, one by one.
Following functions are supported:
- addition (+)
- subtraction (-)
- multiplication (*)
- division (/)
- ln (l)
- exponential (e)
- square (s)
- squareroot (q)
9l
User input is "9l"
Result is: 2