libbson fuzzer for OSS-Fuzz integration. (#706)

Author: DavidKorczynski

src/libbson/fuzz/fuzz_test_libbson.c

@@ -0,0 +1,19 @@
+#include <stdlib.h>
+#include <stdio.h>
+#include <stdint.h>
+#include <bson/bson.h>
+
+int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size) {
+    char *nt = malloc(size+1);
+    memcpy(nt, data, size);
+    nt[size] = '\0';
+    bson_error_t error;
+
+    bson_t b;
+    if (bson_init_from_json(&b, nt, -1, &error)) {
+        bson_destroy(&b);
+    }
+
+    free(nt);
+    return 0;
+}