libc/fuzzing/stdlib/atof_differential_fuzz.cpp

   1 //===-- atof_fuzz.cpp -----------------------------------------------------===//
   2 //
   3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
   4 // See https://llvm.org/LICENSE.txt for license information.
   5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
   6 //
   7 //===----------------------------------------------------------------------===//
   8 ///
   9 /// Fuzzing test for llvm-libc atof implementation.
  10 ///
  11 //===----------------------------------------------------------------------===//
  12 #include "src/stdlib/atof.h"
  13 #include <stddef.h>
  14 #include <stdint.h>
  15 #include <stdlib.h>
  16
  17 #include "fuzzing/stdlib/StringParserOutputDiff.h"
  18
  19 extern "C" int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size) {
  20   uint8_t *container = new uint8_t[size + 1];
  21   if (!container)
  22     __builtin_trap();
  23   size_t i;
  24
  25   for (i = 0; i < size; ++i)
  26     container[i] = data[i];
  27   container[size] = '\0'; // Add null terminator to container.
  28
  29   StringParserOutputDiff<double>(&LIBC_NAMESPACE::atof, &::atof, container,
  30                                  size);
  31   delete[] container;
  32   return 0;
  33 }