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From: <tlake AT twcny DOT rr DOT com>
To: <cygwin AT cygwin DOT com>
References: <78512bbe-b912-9bf5-d6cf-9da5b982c955 AT SystematicSw DOT ab DOT ca>
In-Reply-To: <78512bbe-b912-9bf5-d6cf-9da5b982c955@SystematicSw.ab.ca>
Subject: RE: Bug in TIME function
Date: Fri, 13 Sep 2019 07:27:21 -0400
Message-ID: <016201d56a26$37271f70$a5755e50$@twcny.rr.com>
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In Linux it returns a time value and return code of 0:

tom AT LinuxPC:~/Downloads$ ./timetest
return value 10452
errno 0
 Success
tom AT LinuxPC:~/Downloads$ ./timetest
return value 14048
errno 0
 Success

-----Original Message-----
From: Brian Inglis <Brian DOT Inglis AT SystematicSw DOT ab DOT ca> 
Sent: Thursday, September 12, 2019 02:45 PM
To: cygwin AT cygwin DOT com
Subject: Re: Bug in TIME function

On 2019-09-12 12:05, tlake AT twcny DOT rr DOT com wrote:
> The code below returns -1. It shouldn't.
> #include <sys/times.h>
> #include <stdio.h>
> int main(int argc, char *argv[])
> {
>   printf("return value %ld\n", (long)times((struct tms*)0));
>   return 0;
> }

It should.
The times(3) function requires a pointer to object storage to return the results which are its function.
An invalid pointer to object storage is an error, requiring -1 be returned and errno set.
You should also print errno and strerror(errno).

--
Take care. Thanks, Brian Inglis, Calgary, Alberta, Canada

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