From:	khan AT xraylith DOT wisc DOT 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 DOT 0 DOT 5 DOT 32 DOT 19990119122347 DOT 0a413ec0 AT linus DOT mitre DOT org>
To:	Tim Taylor <ttaylor AT mitre DOT org>
Cc:	gnu-win32 AT cygnus DOT com

Tim Taylor <ttaylor AT mitre DOT 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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