setting errno

[DJ Delorie]

Tim Taylor wrote:
> 
> 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 correct way is, always was, and always will be, like thus:

	#include <errno.h>

	errno = N;

The ANSI spec requires it to be so.
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