On 10/24/07, Rob <[EMAIL PROTECTED]> wrote:
> In a previous thread, Ben described things that you can't access when your
> app is running as a sublaunch without globals
>
> "You cannot access any variables that aren't located on the stack. This
> includes global variables, static variables, and some kinds of constant
> data."
>
> My question is - 'what kinds of constant data?'
>
> I know I can't use normal globals
> I know I can't use static variables
>
> but what about initialisers
>
> RectangleType bottomRect={0,145,160,15};
> or
> Char string[]={"initialise with string"};
> or
> StrCopy(stringP,"some text to copy");
>
> what is the underlying rule here - how do I know what Codewarrior will put
> on the stack vs what it won't ???
Actually, the question is "what will CodeWarrior put in PC-relative
storage (code segment) and what will CW put in global storage (data
segment that gets copied to the heap at app startup).
Anonymous constant data that doesn't contain pointers will probably be
PC-allocated. The key is to use the "Disassemble" command and look at
the function. If you see code that uses A5, you've got global access.
If you're code uses PC, then you're OK.
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