compiler-rt/test/fuzzer/StrcmpTest.cpp

   1 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
   2 // See https://llvm.org/LICENSE.txt for license information.
   3 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
   4
   5 // Break through a series of strcmp.
   6 #include <cassert>
   7 #include <cstdint>
   8 #include <cstdio>
   9 #include <cstdlib>
  10 #include <cstring>
  11
  12 bool Eq(const uint8_t *Data, size_t Size, const char *Str) {
  13   char Buff[1024];
  14   size_t Len = strlen(Str);
  15   if (Size < Len) return false;
  16   if (Len >= sizeof(Buff)) return false;
  17   memcpy(Buff, (const char*)Data, Len);
  18   Buff[Len] = 0;
  19   int res = strcmp(Buff, Str);
  20   return res == 0;
  21 }
  22
  23 extern "C" int LLVMFuzzerTestOneInput(const uint8_t *Data, size_t Size) {
  24   if (Eq(Data, Size, "ABC") &&
  25       Size >= 3 && Eq(Data + 3, Size - 3, "QWER") &&
  26       Size >= 7 && Eq(Data + 7, Size - 7, "ZXCVN")) {
  27     fprintf(stderr, "BINGO\n");
  28     exit(1);
  29   }
  30   return 0;
  31 }