[fpc-pascal] Error: Identifier not found "Heap Error"

[Michael Van Canneyt]

On Sat, 15 Oct 2016, Luiz Gonzaga de Oliveira Neto wrote:

> Hello all,
>
> As mentioned in a previous e-mail, I'm having my first contact with Pascal
> during my Masters research, trying to compile a code provided by a
> professor.
>
> The first mistakes I had regarded the *memavail *and *maxavail* functions,
> which I've read are not supported anymore. I believe I have overcome these
> issues, but I still get the following error:
>
> OPTIQAP.PAS(18,21) Error: Identifier not found "HeapError"
> OPTIQAP.PAS(19,6) Error: Identifier not found "HeapError"
>
> As I mentioned in the previous e-mail, this code was provided by me by a
> reputed professor, so I have reasons to believe it's correct. My question
> is: do you know if this error could be happening due to some version
> incompatibility or some missing flag during compilation? Or is it probably
> caused by some mistake in the code? Or would you need more information to
> answer this?
>
> Sorry if the question is silly, as I've mentioned, this is my first contact
> with Pascal and FPC.

This is possibly code intended for Turbo Pascal. 
The HeapError identifier does not exist in Free Pascal. 
At least, I have not found any.

In some old Free Vision code, I found a reference to HeapError which seems
to be a callback function variable, but it is not active for Free Pascal. 
I suggest you simply remove any lines that contain HeapError.

Michael.