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Fuzzing: Update build instructions

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The project needs clang-12, which is not on all systems the default
(e.g. Debian Testing).
This commit is contained in:
Ben Wiederhake 2021-10-21 20:20:51 +02:00 • committed by Linus Groh
parent e503b60bdc
commit fc519d43ba
1 changed files with 3 additions and 1 deletions
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Meta/Lagom/ReadMe.md
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@ -29,11 +29,13 @@ Lagom can be used to fuzz parts of SerenityOS's code base. This requires buildli
# Or as a handy rebuild-rerun line: # Or as a handy rebuild-rerun line:
ninja FuzzJs && ./Fuzzers/FuzzJs ninja FuzzJs && ./Fuzzers/FuzzJs
(Note that we require clang >= 12, so depending on your package manager you may need to specify `clang++-12` and `clang-12` instead.)
Any fuzzing results (particularly slow inputs, crashes, etc.) will be dropped in the current directory. Any fuzzing results (particularly slow inputs, crashes, etc.) will be dropped in the current directory.
clang emits different warnings than gcc, so you may have to remove `-Werror` in CMakeLists.txt and Meta/Lagom/CMakeLists.txt. clang emits different warnings than gcc, so you may have to remove `-Werror` in CMakeLists.txt and Meta/Lagom/CMakeLists.txt.
Fuzzers work better if you give them a fuzz corpus, e.g. `./Fuzzers/FuzzBMP ../Base/res/html/misc/bmpsuite_files/rgba32-61754.bmp` Pay attention that LLVM also likes creating new files, don't blindly commit them (yet)! Fuzzers work better if you give them a fuzz corpus, e.g. `./Fuzzers/FuzzBMPLoader ../Base/res/html/misc/bmpsuite_files/rgba32-61754.bmp` Pay attention that LLVM also likes creating new files, don't blindly commit them (yet)!
To run several fuzz jobs in parallel, pass `-jobs=24 -workers=24`. To run several fuzz jobs in parallel, pass `-jobs=24 -workers=24`.