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Diffstat (limited to 'instrumentation/README.neverzero.md')
| -rw-r--r-- | instrumentation/README.neverzero.md | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/instrumentation/README.neverzero.md b/instrumentation/README.neverzero.md index 49104e00..06334eab 100644 --- a/instrumentation/README.neverzero.md +++ b/instrumentation/README.neverzero.md @@ -33,3 +33,8 @@ AFL_LLVM_SKIP_NEVERZERO=1 ``` If the target does not have extensive loops or functions that are called a lot then this can give a small performance boost. + +Please note that the default counter implementations are not thread safe! + +Support for thread safe counters in mode LLVM CLASSIC can be activated with setting +`AFL_LLVM_THREADSAFE_INST=1`. \ No newline at end of file |