Shamelessly copy Josiah

source/lib/json/tests/thirdparty/Fuzzer/test/StrcmpTest.cpp

@@ -0,0 +1,32 @@
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+
+// Break through a series of strcmp.
+#include <cstring>
+#include <cstdint>
+#include <cstdio>
+#include <cstdlib>
+#include <cassert>
+
+bool Eq(const uint8_t *Data, size_t Size, const char *Str) {
+  char Buff[1024];
+  size_t Len = strlen(Str);
+  if (Size < Len) return false;
+  if (Len >= sizeof(Buff)) return false;
+  memcpy(Buff, (char*)Data, Len);
+  Buff[Len] = 0;
+  int res = strcmp(Buff, Str);
+  return res == 0;
+}
+
+extern "C" int LLVMFuzzerTestOneInput(const uint8_t *Data, size_t Size) {
+  if (Eq(Data, Size, "ABC") &&
+      Size >= 3 && Eq(Data + 3, Size - 3, "QWER") &&
+      Size >= 7 && Eq(Data + 7, Size - 7, "ZXCVN") &&
+      Size >= 14 && Data[13] == 42
+    ) {
+    fprintf(stderr, "BINGO\n");
+    exit(1);
+  }
+  return 0;
+}