At 00.38 -0400 0-09-25, Dean Herington wrote:
>And also lexer generators, apparently. After extending my lexer modestly
>(I think), I now get:
>
>INTERNAL ERROR: Application parameter stack overflow
>
>from Hugs when trying to run Alex to generate a lexer. I haven't been
>able to find any mention of internal errors in all the Hugs documentation
>I've seen. Any ideas?
Yes, I recognize the error, as I wrote it. :-) On MacHugs, just increase
the stack by the -X command (check the :s console command).
I would also suggest you to use the Heap Profiler, together with the
excellent ho2ps port provided by Pablo Azero. You automatically get PS
files, which you can view using MacGS PPC
ftp://ftp.cs.wisc.edu/pub/ghost/aladdin/gs550/mac/, or convert them to PDF
using this program before viewing them in Adobe Acrobat.
This way you can get a good idea of what memory resources you are using,
and to some extent get hints about stack allocation, as this is caused by
recursive function calls that consume heap memory. (If a recursive function
call does not consume heap memory, it can be eliminated on the stack with a
so called tail-recursive evaluator, even though I do not know if Hugs is
doing that.)
Hans Aberg
