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diff --git a/docs/important_changes.md b/docs/important_changes.md new file mode 100644 index 00000000..e847f360 --- /dev/null +++ b/docs/important_changes.md @@ -0,0 +1,60 @@ +# Important changes in AFL++ + +This document lists important changes in AFL++, for example, major behavior +changes. + +## From version 3.00 onwards + +With AFL++ 4.00, we introduced the following changes from previous behaviors: + * the complete documentation was overhauled and restructured thanks to @llzmb! + * a new CMPLOG target format requires recompiling CMPLOG targets for use with + AFL++ 4.0 onwards + * better naming for several fields in the UI + +With AFL++ 3.15, we introduced the following changes from previous behaviors: + * afl-cmin and afl-showmap `-Ci` now descend into subdirectories like afl-fuzz + `-i` does (but note that afl-cmin.bash does not) + +With AFL++ 3.14, we introduced the following changes from previous behaviors: + * afl-fuzz: deterministic fuzzing is not a default for `-M main` anymore + * afl-cmin/afl-showmap -i now descends into subdirectories (afl-cmin.bash, + however, does not) + +With AFL++ 3.10, we introduced the following changes from previous behaviors: + * The '+' feature of the `-t` option now means to auto-calculate the timeout + with the value given being the maximum timeout. The original meaning of + "skipping timeouts instead of abort" is now inherent to the `-t` option. + +With AFL++ 3.00, we introduced changes that break some previous AFL and AFL++ +behaviors 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. + 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! + * 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. Additionally QEMU 5.1 supports more CPU targets so this is really worth + it. + * When instrumenting targets, afl-cc will not supersede optimizations anymore + if any were given. This allows to fuzz targets build regularly like those + for debug or release versions. + * 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 fail on crashes and too large files, instead it skips them and uses + them for splicing mutations + * `-m` none is now the 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` + * a caching of test cases can now be performed and can be modified by + editing config.h for `TESTCASE_CACHE` or by specifying the environment + variable `AFL_TESTCACHE_SIZE` (in MB). Good values are between 50-500 + (default: 50). + * `-M` mains do not perform trimming + * `examples/` got renamed to `utils/` + * `libtokencap/`, `libdislocator/`, and `qdbi_mode/` were moved to `utils/` + * afl-cmin/afl-cmin.bash now search first in `PATH` and last in `AFL_PATH` |