| commit | e7eeeb9f2a4a358fb0bbed81e145ef5538ff60f0 | [log] [tgz] |
|---|---|---|
| author | Rich Felker <dalias@aerifal.cx> | Sat Feb 24 11:19:54 2018 -0500 |
| committer | Rich Felker <dalias@aerifal.cx> | Sat Feb 24 11:19:54 2018 -0500 |
| tree | 0632ca84dcfa25c74f610e74d3241d91291eea88 | |
| parent | f92804188eb464536d638548e51e835b6c49e373 [diff] |
avoid use of readv syscall in __stdio_read backend when not needed formally, calling readv with a zero-length first iov component should behave identically to calling read on just the second component, but presence of a zero-length iov component has triggered bugs in some kernels and performs significantly worse than a simple read on some file types.