On Wed, May 26, 2004 at 09:13:10AM -0500, Scott T. Hildreth wrote: > Expecting a single value is not quite the same as knowing that > there will be one. If someone modified Adder to return a list and > we didn't check for that possibility and take appropriate action > the Perl stack would end up in an inconsistent state. That is > something you really don't want to happen ever. > > ...so applying it to your question, I would say you want to check the > return value of call_pv and make sure you are getting the right num > of values "pushed" on the stack. According to the docs, the returned > values will be pushed onto the stack for you, you don't need to set > the stack size.
I don't know how many values will be pushed onto the stack, so I can't check. There may be no returned values on the stack, as well. What I was wondering about was my use of SPAGAIN -- as that resets my local copy of the stack pointer (or so I'm told by perlcall). But, how do I know that the values pushed on the stack by the secondary subroutine get returned correctly to the calling Perl-space code? -- Bill Moseley [EMAIL PROTECTED]
