view contrib/fuzz/README.rst @ 39001:a6e1ff40e335

changegroup: pass clrevtolocalrev to each group

clrevtolocalrev is a per-changegroup group mapping revisions to
aid with shallow clone.

Back when this functionality was implemented in an extension, this
dict was added to the packer instance so monkeypatched functions
could reference it there. Now that this code is part of core, we
can pass the dict to each consumer properly so it doesn't have to
live on the cgpacker instance. This commit does that.

Differential Revision: https://phab.mercurial-scm.org/D4193

How to add fuzzers (partially cribbed from oss-fuzz[0]):

  1) git clone https://github.com/google/oss-fuzz
  2) cd oss-fuzz
  3) python infra/helper.py build_image mercurial
  4) docker run --cap-add=SYS_PTRACE -it -v $HG_REPO_PATH:/hg-new \
         gcr.io/oss-fuzz/mercurial bash
  5) cd /src
  6) rm -r mercurial
  7) ln -s /hg-new mercurial
  8) cd mercurial
  9) compile
  10) ls $OUT

Step 9 is literally running the command "compile", which is part of
the docker container. Once you have that working, you can build the
fuzzers like this (in the oss-fuzz repo):

python infra/helper.py build_fuzzers --sanitizer address mercurial $HG_REPO_PATH

(you can also say "memory", "undefined" or "coverage" for
sanitizer). Then run the built fuzzers like this:

python infra/helper.py run_fuzzer mercurial -- $FUZZER

0: https://github.com/google/oss-fuzz/blob/master/docs/new_project_guide.md