1 files changed, 14 insertions, 0 deletions
diff --git a/pw_hdlc/decoder_test.cc b/pw_hdlc/decoder_test.cc
index 358bb26dc..4a90a4d21 100644
--- a/pw_hdlc/decoder_test.cc
+++ b/pw_hdlc/decoder_test.cc
@@ -19,12 +19,14 @@
 
 #include "gtest/gtest.h"
 #include "pw_bytes/array.h"
+#include "pw_fuzzer/fuzztest.h"
 #include "pw_hdlc/internal/protocol.h"
 
 namespace pw::hdlc {
 namespace {
 
 using std::byte;
+using namespace fuzzer;
 
 TEST(Frame, Fields) {
   static constexpr auto kFrameData =
@@ -152,5 +154,17 @@ TEST(Decoder, TooLargeForBuffer_DecodesNextFrame) {
   EXPECT_EQ(OkStatus(), decoder.Process(kFlag).status());
 }
 
+void ProcessNeverCrashes(ConstByteSpan data) {
+  DecoderBuffer<1024> decoder;
+  for (byte b : data) {
+    if (decoder.Process(b).status() != Status::Unavailable()) {
+      decoder.Clear();
+    }
+  }
+}
+
+FUZZ_TEST(Decoder, ProcessNeverCrashes)
+    .WithDomains(VectorOf<1024>(Arbitrary<byte>()));
+
 }  // namespace
 }  // namespace pw::hdlc