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truncate file when saving settings

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This commit is contained in:
Miguel Freitas 2014-04-06 17:00:42 -03:00
parent ad83ba061c
commit 03d037c197
1 changed files with 1 additions and 0 deletions
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src/twister_utils.cpp
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@ -71,6 +71,7 @@ int save_file(std::string const& filename, std::vector<char>& v)
libtorrent::error_code ec;
if (!f.open(filename, file::write_only, ec)) return -1;
if (ec) return -1;
f.set_size(0, ec);
file::iovec_t b = {&v[0], v.size()};
size_type written = f.writev(0, &b, 1, ec);
if (written != int(v.size())) return -3;