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  1.  Home
  2. RPG400-L
  3. October 2010

Re: Safe to maintain pointer to errno() ?

On 10/13/2010 3:39 PM, Jon Paris wrote:
When I first started experimenting with calling C functions from RPG
back before V3R2 came out I asked the guys on the C compiler team about
this. The answer I got was that for "historical" reasons it could not be
guaranteed. I know that the C compiler and run time has changed since
then, so it is possible that this is no longer true, but I never risk
it. Barbara may know for sure.


I don't know, but even if I did know what's true now, I think that errno should be accessed in the way that the C errno.h header causes C programmers to access it, by fetching the pointer each time.

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