1  // Copyright (c) 2009-present The Bitcoin Core developers
 2  // Distributed under the MIT software license, see the accompanying
 3  // file COPYING or http://www.opensource.org/licenses/mit-license.php.
 4  
 5  #include <test/fuzz/fuzz.h>
 6  #include <util/moneystr.h>
 7  #include <util/strencodings.h>
 8  #include <util/string.h>
 9  
10  #include <cassert>
11  #include <cstdint>
12  #include <optional>
13  #include <string>
14  
15  FUZZ_TARGET(parse_numbers)
16  {
17      const std::string random_string(buffer.begin(), buffer.end());
18      {
19          const auto i8{ToIntegral<int8_t>(random_string)};
20          const auto u8{ToIntegral<uint8_t>(random_string)};
21          const auto i16{ToIntegral<int16_t>(random_string)};
22          const auto u16{ToIntegral<uint16_t>(random_string)};
23          const auto i32{ToIntegral<int32_t>(random_string)};
24          const auto u32{ToIntegral<uint32_t>(random_string)};
25          const auto i64{ToIntegral<int64_t>(random_string)};
26          const auto u64{ToIntegral<uint64_t>(random_string)};
27          // Dont check any values, just that each success result must fit into
28          // the one with the largest bit-width.
29          if (i8) {
30              assert(i8 == i64);
31          }
32          if (u8) {
33              assert(u8 == u64);
34          }
35          if (i16) {
36              assert(i16 == i64);
37          }
38          if (u16) {
39              assert(u16 == u64);
40          }
41          if (i32) {
42              assert(i32 == i64);
43          }
44          if (u32) {
45              assert(u32 == u64);
46          }
47          constexpr auto digits{"0123456789"};
48          if (i64) {
49              assert(util::RemovePrefixView(random_string, "-").find_first_not_of(digits) == std::string::npos);
50          }
51          if (u64) {
52              assert(random_string.find_first_not_of(digits) == std::string::npos);
53          }
54      }
55  
56      (void)ParseMoney(random_string);
57  
58      (void)LocaleIndependentAtoi<int>(random_string);
59  
60      int64_t i64;
61      (void)LocaleIndependentAtoi<int64_t>(random_string);
62      (void)ParseFixedPoint(random_string, 3, &i64);
63  }