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+# custum mutator: libfuzzer LLVMFuzzerMutate()
+
+This uses the libfuzzer LLVMFuzzerMutate() function in llvm 12.
+
+just type `make` to build
+
+```AFL_CUSTOM_MUTATOR_LIBRARY=custom_mutators/libfuzzer/libfuzzer-mutator.so afl-fuzz ...```
+
+Note that is is currently simple and is missing two features:
+  * Splicing ("Crossover")
+  * Dictionary support
+
+To update the source, all that is needed is that FuzzerDriver.cpp has to receive
+```
+#include "libfuzzer.inc"
+```
+before the closing namespace bracket.
+
+It is also libfuzzer.inc where the configuration of the libfuzzer mutations
+are done.
+
+> Original repository: https://github.com/llvm/llvm-project
+> Path: compiler-rt/lib/fuzzer/*.{h|cpp}
+> Source commit: d4b88ac1658d681e143482336cac27c6a74b8b24