Swiftdiff options
Diffstat (limited to '3rdParty/Boost/src/libs/regex/src/fileiter.cpp')
| -rw-r--r-- | 3rdParty/Boost/src/libs/regex/src/fileiter.cpp | 21 |
1 files changed, 16 insertions, 5 deletions
diff --git a/3rdParty/Boost/src/libs/regex/src/fileiter.cpp b/3rdParty/Boost/src/libs/regex/src/fileiter.cpp index 7d9c7f8..ff1d111 100644 --- a/3rdParty/Boost/src/libs/regex/src/fileiter.cpp +++ b/3rdParty/Boost/src/libs/regex/src/fileiter.cpp @@ -258,11 +258,22 @@ void mapfile::lock(pointer* node)const *p = 0; *(reinterpret_cast<int*>(*node)) = 1; } - std::fseek(hfile, (node - _first) * buf_size, SEEK_SET); - if(node == _last - 1) - std::fread(*node + sizeof(int), _size % buf_size, 1, hfile); - else - std::fread(*node + sizeof(int), buf_size, 1, hfile); + + std::size_t read_size = 0; + int read_pos = std::fseek(hfile, (node - _first) * buf_size, SEEK_SET); + + if(0 == read_pos && node == _last - 1) + read_size = std::fread(*node + sizeof(int), _size % buf_size, 1, hfile); + else + read_size = std::fread(*node + sizeof(int), buf_size, 1, hfile); +#ifndef BOOST_NO_EXCEPTIONS + if((read_size == 0) || (std::ferror(hfile))) + { + throw std::runtime_error("Unable to read file."); + } +#else + BOOST_REGEX_NOEH_ASSERT((0 == std::ferror(hfile)) && (read_size != 0)); +#endif } else { |