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Folks, I have often wondered and have never found reference to the internal
workings of errno. My specific question is whether it is safe to obtain a
pointer to errno only one time, and then reference the based value from then
on. It makes sense to me that errno's value would be at a static location
and won't float around in memory, but - again - I haven't seen any guarantee
of that. So in my programs every time I want to measure success of certain
operations, it's the old retrieve-the-address-and-test-the-value approach.
This really is like the C approach except that in C it can be a single
instruction ( if (*errno < 1) . ).
Any takers from folks in the know?
Dennis E. Lovelady
AIM/Skype: delovelady MSN: fastcounter@xxxxxxxxxxxx
<
http://www.linkedin.com/in/dennislovelady>
www.linkedin.com/in/dennislovelady --
Using Windows is better than eating glass*
- *Depending upon the quality of the glass.
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