Am 20.11.19 um 07:56 schrieb Sven Barth via fpc-pascal:
Ryan Joseph via fpc-pascal <fpc-pascal@lists.freepascal.org
<mailto:fpc-pascal@lists.freepascal.org>> schrieb am Mi., 20. Nov. 2019,
04:36:
I came across get_caller_frame in some unrelated code and I was
just curious about this so I wanted to ask.
What does get_caller_frame return exactly? Is this a pointer to a
stack frame that could be copied to the heap? I'm still interested
in how we could add some form of coroutine like behaviors to pascal
and so I was wondering if we could copy/restore the current stack
pointer so that SetJmp and LongJmp would not blow things up.
It returns the address of the caller's frame pointer. See also
https://www.freepascal.org/docs-html/rtl/system/get_caller_frame.html
It's mainly used in context of raising exceptions with the help of a
second function. See here:
https://freepascal.org/docs-html/current/ref/refse112.html#x227-24900017.1
For the record: the reliability of this function is limited, in
particular in combination with optimization.
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