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# C Sample
This shows a simple persistent harness for unicornafl in C.
In contrast to the normal c harness, this harness manually resets the unicorn
state on each new input.
Thanks to this, you can rerun the test case in unicorn multiple times, without
the need to fork again.
## Compiling sample.c
The target can be built using the `make` command.
Just make sure you have built unicorn support first:
```bash
cd /path/to/afl/unicorn_mode
./build_unicorn_support.sh
```
## Compiling persistent_target.c
You don't need to compile persistent_target.c since a X86_64 binary version is
pre-built and shipped in this sample folder. This file documents how the binary
was built in case you want to rebuild it or recompile it for any reason.
The pre-built binary (persistent_target_x86_64.bin) was built using -g -O0 in
gcc.
Then load the binary and execute the main function directly.
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