KeqingMoe/argparse
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do_from_chars(): initialize variable to fix Coverity Scan warning

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The argparse.hpp copy inside GDAL has caused Coverity Scan to emit a
(false-positive) warning about x not being initialized.

```
________________________________________________________________________________________________________
*** CID 1544814:  Uninitialized variables  (UNINIT)
/gdal/apps/argparse/argparse.hpp: 257 in gdal_argparse::details::do_from_chars<unsigned char, (int)10>(std::basic_string_view<char, std::char_traits<char>>)()
251       if (ec == std::errc::invalid_argument) {
252         throw std::invalid_argument{"pattern '" + std::string(s) + "' not found"};
253       }
254       if (ec == std::errc::result_out_of_range) {
255         throw std::range_error{"'" + std::string(s) + "' not representable"};
256       }
>>>     CID 1544814:  Uninitialized variables  (UNINIT)
>>>     Using uninitialized value "x".
```

Let's initialize it to 0 to make the analyzer happy
This commit is contained in:
Even Rouault 2024-05-05 21:35:55 +02:00
parent ce7db9962a
commit 5228c57938
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1 changed files with 1 additions and 1 deletions
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include/argparse/argparse.hpp
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@ -238,7 +238,7 @@ constexpr auto consume_hex_prefix(std::string_view s)
template <class T, auto Param> template <class T, auto Param>
inline auto do_from_chars(std::string_view s) -> T { inline auto do_from_chars(std::string_view s) -> T {
T x; T x{0};
auto [first, last] = pointer_range(s); auto [first, last] = pointer_range(s);
auto [ptr, ec] = std::from_chars(first, last, x, Param); auto [ptr, ec] = std::from_chars(first, last, x, Param);
if (ec == std::errc()) { if (ec == std::errc()) {