fuzz: add bus-label fuzzer

src/fuzz/fuzz-bus-label.c

@@ -0,0 +1,18 @@
+/* SPDX-License-Identifier: LGPL-2.1+ */
+
+#include <errno.h>
+
+#include "alloc-util.h"
+#include "bus-label.h"
+#include "fuzz.h"
+
+int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size) {
+        _cleanup_free_ char *unescaped = NULL, *escaped = NULL;
+
+        unescaped = bus_label_unescape_n((const char*)data, size);
+        assert_se(unescaped != NULL);
+        escaped = bus_label_escape(unescaped);
+        assert_se(escaped != NULL);
+
+        return 0;
+}

src/fuzz/meson.build

@@ -112,4 +112,8 @@ fuzzers += [
         [['src/fuzz/fuzz-compress.c'],
          [libshared],
          []],
+
+        [['src/fuzz/fuzz-bus-label.c'],
+         [libshared],
+         []],
 ]