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-rw-r--r--llvm/docs/LibFuzzer.rst7
1 files changed, 7 insertions, 0 deletions
diff --git a/llvm/docs/LibFuzzer.rst b/llvm/docs/LibFuzzer.rst
index d7947eba6ad..e2f6d943b0d 100644
--- a/llvm/docs/LibFuzzer.rst
+++ b/llvm/docs/LibFuzzer.rst
@@ -81,6 +81,13 @@ is to use the `-merge=1` flag:
mkdir NEW_CORPUS_DIR # Store minimized corpus here.
./my-fuzzer -merge=1 NEW_CORPUS_DIR FULL_CORPUS_DIR
+You may use the same flag to add more interesting items to an existing corpus.
+Only the inputs that trigger new coverage will be added to the first corpus.
+
+.. code-block:: console
+
+ ./my-fuzzer -merge=1 CURRNT_CORPUS_DIR NEW_POTENTIALLY_INTERESTING_INPUTS_DIR
+
Getting Started
===============
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