From: jjf@bcs.org.uk (J. J. Farrell) Subject: Re: setting errno 20 Jan 1999 08:24:17 -0800 Message-ID: <199901200233.SAA26740.cygnus.gnu-win32@aleph.ssd.hal.com> References: <3.0.5.32.19990119122347.0a413ec0@linus.mitre.org> Content-Type: text To: ttaylor@mitre.org (Tim Taylor) Cc: gnu-win32@cygnus.com > From: Tim Taylor > > I'm porting a program that sets errno if an operation fails. However, in > the B20.1 errno is a macro that dereferences the pointer returned by a > function #define errno (*__errno()) > > What is the proper way to set errno in cygwin? The same as with any other Standard C conformant definition of errno - something like errno = whatever; > Based on comments I've read in the headers, it appears that the following > will work: > > _REENT->_errno = xxx > > Is this correct, or is there a more compatible or preferred way of doing this? Is there some problem with doing it the normal way? - For help on using this list (especially unsubscribing), send a message to "gnu-win32-request@cygnus.com" with one line of text: "help".