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Fix build on GNU/Hurd

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There is no path length limitation there, even via pathconf.  But glibc
provides a getcwd function that allocates the buffer dynamically so we can
just leverage that.
This commit is contained in:
Samuel Thibault 2022-08-16 20:29:54 +02:00
parent cd6805e94d
commit d3d968e583
1 changed files with 7 additions and 0 deletions
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7
include/ghc/filesystem.hpp
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@ -4199,6 +4199,13 @@ GHC_INLINE path current_path(std::error_code& ec)
return path(); return path();
} }
return path(std::wstring(buffer.get()), path::native_format); return path(std::wstring(buffer.get()), path::native_format);
#elif defined(__GLIBC__)
std::unique_ptr<char, decltype(&std::free)> buffer { ::getcwd(NULL, 0), std::free };
if (buffer == nullptr) {
ec = detail::make_system_error();
return path();
}
return path(buffer.get());
#else #else
size_t pathlen = static_cast<size_t>(std::max(int(::pathconf(".", _PC_PATH_MAX)), int(PATH_MAX))); size_t pathlen = static_cast<size_t>(std::max(int(::pathconf(".", _PC_PATH_MAX)), int(PATH_MAX)));
std::unique_ptr<char[]> buffer(new char[pathlen + 1]); std::unique_ptr<char[]> buffer(new char[pathlen + 1]);