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`PHANTOM_TRAILS_NO_SNIPPET=1` prevents the mutator from generating call/ret snippets. `PHANTOM_TRAILS_NO_ARG_REUSE=1` prevents the mutator from (intentionally) reusing args when generating instructions.
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This PR upgrades the fuzzer to LibAFL 0.15.1.
The following need to be checked before this can be merged:
rustup default 1.82Why?
It would be nice to be able to dynamically insert/remove the
snippetmutation when evaluating its effects, instead of having a (compile-time) tuple (see here).For now I implemented this by simply putting the Snippet mutation as last element fo the tuple and constraining the rng at runtime, which is horrible and makes me want to cry.
It seems like newer LibAFL versions can handle dynamic mutation lists, but I didn't manage to make it work and got bored.
Anyways, since I did the porting effort, we might as well upstream it.