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-rw-r--r--docs/Changelog.md5
-rw-r--r--docs/env_variables.md3
2 files changed, 8 insertions, 0 deletions
diff --git a/docs/Changelog.md b/docs/Changelog.md
index 2f0fba33..e5169daf 100644
--- a/docs/Changelog.md
+++ b/docs/Changelog.md
@@ -7,6 +7,11 @@
   - afl-fuzz:
     - the new deterministic fuzzing feature is now activated by default,
       deactivate with -z. Parameters -d and -D are ignored.
+  - afl-cc:
+    - added collision free caller instrumentation to LTO mode. activate with
+      `AFL_LLVM_LTO_CALLER=1`. You can set a max depth to go through single
+      block functions with `AFL_LLVM_LTO_CALLER_DEPTH` (default 0)
+
 
 ### Version ++4.10c (release)
   - afl-fuzz:
diff --git a/docs/env_variables.md b/docs/env_variables.md
index a972b6da..1e4fc7ba 100644
--- a/docs/env_variables.md
+++ b/docs/env_variables.md
@@ -248,6 +248,9 @@ use (which only ever the author of this LTO implementation will use). These are
 used if several separated instrumentations are performed which are then later
 combined.
 
+  - `AFL_LLVM_LTO_CALLER` activates collision free CALLER instrumentation
+  - `AFL_LLVM_LTO_CALLER` sets the maximum mumber of single block functions
+    to dig deeper into a real function. Default 0.
   - `AFL_LLVM_DOCUMENT_IDS=file` will document to a file which edge ID was given
     to which function. This helps to identify functions with variable bytes or
     which functions were touched by an input.