Hi Michael. It looks I was inspecting an outdated version of manpages on another system, that didn't mention errno.
You are right the current version in Debian does clearly states how the errors are communicate. Please close this bug. Sorry for the confusion, and thanks for a quick response. On Wed, 6 May 2020 at 10:27, Michael Kerrisk (man-pages) <[email protected]> wrote: > > Hello Witold, > > > The man page doesn't tell how the error code is returned back to the > > caller. > > > > Looking at the source code of hsearch and hsearch_r it looks to be via > > errno, but manpage doesn't mention this at all. > > I'm a bit lost here. The manual page says: > > In the event of an error, these two functions set errno to > indicate the cause of the error. > > This seems clear to me, or, otherwise, I really am missing your > point, I'm sorry. > > -- > Michael Kerrisk > Linux man-pages maintainer; http://www.kernel.org/doc/man-pages/ > Linux/UNIX System Programming Training: http://man7.org/training/
