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diff --git a/README.md b/README.md index 819da093..384ae830 100644 --- a/README.md +++ b/README.md @@ -28,28 +28,30 @@ ## Major changes in afl++ 3.0 With afl++ 3.0 we introduced changes that break some previous afl and afl++ -behaviours: +behaviours and defaults: * There are no llvm_mode and gcc_plugin subdirectories anymore and there is only one compiler: afl-cc. All previous compilers now symlink to this one compiler. All instrumentation source code is now in the `instrumentation/` folder. - * The gcc_plugin was replaced with a new version submitted by AdaCore, that - supports more features, thank you! + * The gcc_plugin was replaced with a new version submitted by AdaCore that + supports more features. thank you! * qemu_mode got upgraded to QEMU 5.1, but to be able to build this a current ninja build tool version and python3 setuptools are required. qemu_mode also got new options like snapshotting, instrumenting specific - shared libraries, etc. and QEMU 5.1 supports more CPU targets so this is - worth it. + shared libraries, etc. Additionally QEMU 5.1 supports more CPU targets so + this is really worth it. * When instrumenting targets, afl-cc will not supersede optimizations. This allows to fuzz targets as same as they are built for debug or release. - * afl-fuzz': - * `-i` option now descends into subdirectories. + * afl-fuzz: + * if neither -M or -S is specified, `-S default` is assumed, so more + fuzzers can easily be added later + * `-i` input directory option now descends into subdirectories. It also + does not fatal on crashes and too large files, instead it skips them + and uses them for splicing mutations * -m none is now default, set memory limits (in MB) with e.g. -m 250 * deterministic fuzzing is now disabled by default (unless using -M) and can be enabled with -D - * afl-fuzz will skip over empty dictionaries and too-large test cases instead - of failing, and use them as a source for splicing mutations ## Contents |