--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/fuzz/fuzz-harness.c	Fri Oct 23 23:10:20 2020 +0800
@@ -0,0 +1,48 @@
+#include "includes.h"
+#include "buffer.h"
+#include "dbutil.h"
+
+extern int LLVMFuzzerTestOneInput(const unsigned char *data, size_t size);
+
+int main(int argc, char ** argv) {
+    int i;
+    buffer *input = buf_new(100000);
+
+    for (i = 1; i < argc; i++) {
+#if DEBUG_TRACE
+        if (strcmp(argv[i], "-v") == 0) {
+            debug_trace = 1;
+            TRACE(("debug printing on"))
+        }
+#endif
+    }
+
+    int old_fuzz_wrapfds = 0;
+    for (i = 1; i < argc; i++) {
+        if (argv[i][0] == '-') {
+            /* ignore arguments */
+            continue;
+        }
+
+        char* fn = argv[i];
+        buf_setlen(input, 0);
+        buf_readfile(input, fn);
+        buf_setpos(input, 0);
+
+		/* Run twice to catch problems with statefulness */
+        fuzz.wrapfds = old_fuzz_wrapfds;
+        printf("Running %s once \n", fn);
+        LLVMFuzzerTestOneInput(input->data, input->len);
+        printf("Running %s twice \n", fn);
+        LLVMFuzzerTestOneInput(input->data, input->len);
+        printf("Done %s\n", fn);
+
+        /* Disable wrapfd so it won't interfere with buf_readfile() above */
+        old_fuzz_wrapfds = fuzz.wrapfds;
+        fuzz.wrapfds = 0;
+    }
+
+    printf("Finished\n");
+
+    return 0;
+}