Subject: Re: setting errno
From: [email-masked] (J. J. Farrell)

20 Jan 1999 08:24:17 -0800
Message-ID: <[email-masked]>
References: <[email-masked]>
Content-Type: text
To: [email-masked] (Tim Taylor)
Cc: [email-masked]

> From: Tim Taylor <[email-masked]>
> 
> 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?

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