From d5b1a4f0958c860e825bfd5827cb985a4b86147d Mon Sep 17 00:00:00 2001
From: Eric Biggers <ebiggers3@gmail.com>
Date: Fri, 27 Oct 2023 21:04:32 -0700
Subject: [PATCH] fuzz.sh: add --max-len option

---
 tools/libFuzzer/fuzz.sh | 14 +++++++++++---
 1 file changed, 11 insertions(+), 3 deletions(-)

diff --git a/tools/libFuzzer/fuzz.sh b/tools/libFuzzer/fuzz.sh
index 94bd5a95..ad7e5e9b 100755
--- a/tools/libFuzzer/fuzz.sh
+++ b/tools/libFuzzer/fuzz.sh
@@ -18,6 +18,7 @@ Fuzz wimlib with LLVM's libFuzzer.
 Options:
    --asan          Enable AddressSanitizer
    --input=INPUT   Test a single input file only
+   --max-len=LEN   Maximum length of generated inputs (default: $MAX_LEN)
    --msan          Enable MemorySanitizer
    --time=SECONDS  Stop after the given time has passed
    --ubsan         Enable UndefinedBehaviorSanitizer
@@ -39,13 +40,15 @@ run_cmd()
 }
 
 EXTRA_SANITIZERS=
-EXTRA_FUZZER_ARGS=('-max_len=32768')
+EXTRA_FUZZER_ARGS=()
 INPUT=
+MAX_LEN=32768
 
 longopts_array=(
 asan
 help
 input:
+max-len:
 msan
 time:
 ubsan
@@ -70,13 +73,17 @@ while true; do
 		INPUT=$2
 		shift
 		;;
-	--time)
-		EXTRA_FUZZER_ARGS+=("-max_total_time=$2")
+	--max-len)
+		MAX_LEN=$2
 		shift
 		;;
 	--msan)
 		EXTRA_SANITIZERS+=",memory"
 		;;
+	--time)
+		EXTRA_FUZZER_ARGS+=("-max_total_time=$2")
+		shift
+		;;
 	--ubsan)
 		EXTRA_SANITIZERS+=",undefined"
 		;;
@@ -91,6 +98,7 @@ while true; do
 	esac
 	shift
 done
+EXTRA_FUZZER_ARGS+=("-max_len=$MAX_LEN")
 
 if (( $# != 1 )); then
 	echo 1>&2 "No fuzz target specified!"
-- 
2.46.1