ossfuzz/decompress_fuzzer.c

#include <stddef.h>
#include <stdint.h>
#include <stdlib.h>
#include "lz4.h"

#define CHECK(COND)   if (!(COND)) { abort(); }

int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size)
{
  // TODO: Size input buffer pseudo-randomly based on seed extracted from input
  size_t const buffer_size = 10 * 1024 * 1024;
  char *const dest_buffer = (char *)malloc(buffer_size);

  CHECK(dest_buffer != NULL);

  // Allocation succeeded, try decompressing the incoming data.
  int result = LZ4_decompress_safe((const char*)data,
                                   dest_buffer,
                                   size,
                                   buffer_size);

  // Ignore the result of decompression.
  (void)result;

  free(dest_buffer);

  return 0;
}