From: khan@xraylith.wisc.edu (Mumit Khan)
Subject: Re: setting errno
20 Jan 1999 05:53:42 -0800
Message-ID: <199901200125.TAA23275.cygnus.gnu-win32@modi.xraylith.wisc.edu>
References: <3.0.5.32.19990119122347.0a413ec0@linus.mitre.org>
To: Tim Taylor <ttaylor@mitre.org>
Cc: gnu-win32@cygnus.com

Tim Taylor <ttaylor@mitre.org> writes:
> 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?

As you would expect; eg.,

  #include <errno.h>

  /* .... */
  
  errno = ENOENT;

will do the right thing.

Regards,
Mumit

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