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| author | Hexcoder <heiko@hexco.de> | 2019-06-25 22:03:59 +0200 |
|---|---|---|
| committer | Hexcoder <heiko@hexco.de> | 2019-06-25 22:03:59 +0200 |
| commit | 45be91ff48554569be7f1ba6e4fc1de57e7286c3 (patch) | |
| tree | 5004e9fef6f8a3cbe693ceffd8b847a9c789ec1a /docs/env_variables.txt | |
| parent | c657b3d0727835cd53e57a5d14b2e766fa241c7d (diff) | |
| download | afl++-45be91ff48554569be7f1ba6e4fc1de57e7286c3.tar.gz | |
experimental implementation of counters that skip zero on overflow.
Enable with AFL_NZERO_COUNTS=1 during compilation of target.
Diffstat (limited to 'docs/env_variables.txt')
| -rw-r--r-- | docs/env_variables.txt | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/docs/env_variables.txt b/docs/env_variables.txt index f5db3b4f..725dc82e 100644 --- a/docs/env_variables.txt +++ b/docs/env_variables.txt @@ -106,6 +106,11 @@ Then there are a few specific features that are only available in llvm_mode: See llvm_mode/README.whitelist for more information. + OTHER + ===== + - Setting AFL_NZERO_COUNTS=1 during compilation will use counters + that skip zero on overflow. + Note that AFL_INST_RATIO will behave a bit differently than for afl-gcc, because functions are *not* instrumented unconditionally - so low values will have a more striking effect. For this tool, 0 is not a valid choice. |