1 // Copyright 2018 The Chromium Authors
2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file.
4
5 #include <tuple>
6
7 #include "base/strings/string_util.h"
8 #include "base/strings/utf_string_conversions.h"
9
10 std::string output_std_string;
11 std::wstring output_std_wstring;
12 std::u16string output_string16;
13
14 // Entry point for LibFuzzer.
LLVMFuzzerTestOneInput(const uint8_t * data,size_t size)15 extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size) {
16 base::StringPiece string_piece_input(reinterpret_cast<const char*>(data),
17 size);
18
19 std::ignore = base::UTF8ToWide(string_piece_input);
20 base::UTF8ToWide(reinterpret_cast<const char*>(data), size,
21 &output_std_wstring);
22 std::ignore = base::UTF8ToUTF16(string_piece_input);
23 base::UTF8ToUTF16(reinterpret_cast<const char*>(data), size,
24 &output_string16);
25
26 // Test for char16_t.
27 if (size % 2 == 0) {
28 base::StringPiece16 string_piece_input16(
29 reinterpret_cast<const char16_t*>(data), size / 2);
30 std::ignore = base::UTF16ToWide(output_string16);
31 base::UTF16ToWide(reinterpret_cast<const char16_t*>(data), size / 2,
32 &output_std_wstring);
33 std::ignore = base::UTF16ToUTF8(string_piece_input16);
34 base::UTF16ToUTF8(reinterpret_cast<const char16_t*>(data), size / 2,
35 &output_std_string);
36 }
37
38 // Test for wchar_t.
39 size_t wchar_t_size = sizeof(wchar_t);
40 if (size % wchar_t_size == 0) {
41 std::ignore = base::WideToUTF8(output_std_wstring);
42 base::WideToUTF8(reinterpret_cast<const wchar_t*>(data),
43 size / wchar_t_size, &output_std_string);
44 std::ignore = base::WideToUTF16(output_std_wstring);
45 base::WideToUTF16(reinterpret_cast<const wchar_t*>(data),
46 size / wchar_t_size, &output_string16);
47 }
48
49 // Test for ASCII. This condition is needed to avoid hitting instant CHECK
50 // failures.
51 if (base::IsStringASCII(string_piece_input)) {
52 output_string16 = base::ASCIIToUTF16(string_piece_input);
53 base::StringPiece16 string_piece_input16(output_string16);
54 std::ignore = base::UTF16ToASCII(string_piece_input16);
55 }
56
57 return 0;
58 }
59