Binary-Fuzzing/vuln_code.cpp at main · theyoge/Binary-Fuzzing · GitHub

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#include <stdint.h>
#include <stddef.h>

bool vulncode(const uint8_t *Data, size_t DataSize) {
  return DataSize >= 3 &&
      Data[0] == 'F' &&
      Data[1] == 'U' &&
      Data[2] == 'Z' &&
      Data[3] == 'Z';  // :‑<
}

extern "C" int LLVMFuzzerTestOneInput(const uint8_t *Data, size_t Size) {
  vulncode(Data, Size);
  return 0;
}