Re: ERRNO not getting cleared

[Aharon Robbins]

> Date: Sun, 12 Oct 2003 07:56:26 -0400
> Subject: ERRNO not getting cleared
> From: Jim Hart <address@hidden>
>
> localhost ~/lib bash2.05$ awk 'BEGIN{close("something");print 
> ERRNO;"ls"|getline;print $0;print ERRNO}'
> close of redirection that was never opened
> Makefile
> close of redirection that was never opened
> localhost ~/lib bash2.05$ awk --version
> GNU Awk 3.1.1
>
> As the above code snippet demonstrates, the ERRNO variable isn't 
> getting cleared when a related I/O is successful. I apologize if this 
> is already fixed in a newer version.

ERRNO is like the C errno variable.  It is only set upon an error
and not otherwise cleared unless user-level code clears it.  I
have updated the documentation to state this explicitly.

Thanks,

Arnold