#afl_harec / afl-hare

A Hare compiler instrumentation for AFL.

#Building

mkdir build
cd build
../configure
make

#Using the instrumentation

In most cases, the following is enough:

1. Import the afl module in a target program.
2. Build that program using afl-hare instead of hare with the same arguments. Using HARE=afl-hare setting for custom build systems is also supported.

Example:

// test.ha
use afl; // !!!
use io;
use os;

export fn main() void = {
	const buf = io::drain(os::stdin)!;
	if (len(buf) > 0 && buf[0] == 42) {
		abort("ohno");
	};
};

$ afl-hare build -o test test.ha
$ afl-fuzz -i /tmp/in -o /tmp/out ./test