[PATCH] D70738: [libFuzzer] Add custom output function

[Manish Goregaokar via Phabricator via llvm-commits]

Manishearth added a comment.

I don't see how this is a corner case: anything fuzzing with structured data by parsing the bytestring into something more structured will benefit from this. cargo-fuzz is used by a lot of Rust programs and some of them use the automatic structured data stuff, so they'd all benefit. I wish C++ codebases had something like this so that it would be easier to write good fuzz testcases, but as of now they don't and you have to convert bytestrings into input by hand. Still, such tests could still make use of a custom output formatter.

I don't see how this can be done outside the program, there's no hook that can be run when fuzzing completes.

(I'm not sure what you mean by interactive use of libFuzzer? This is for when you link libfuzzer to a program defining LLVMTestOneInput and then run the resulting binary)


Repository:
  rCRT Compiler Runtime

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D70738/new/

https://reviews.llvm.org/D70738