Re: Internal compiler error (should be diagnostic error)

[john o goyo]

Greetings, Andreas.

On 2024-05-09 06:21, Fischlin Andreas wrote:

Hi John,

I do not understand why this code should be legal PIM code. Within the scope of the local MODULE Inside the ident CardType is not known and you should not be able to export it.

Of course this has nothing to do with the gm2 compiler having difficulties to detect this coding error. But perhaps ‘unknown symbol’ means that? Admitted, not a very clear and helpful error message, but perhaps this is what’s going on?

    Yes -- the original behaviour from gm2 was to stop with the message
    "not implemented yet" giving no indication of the cause (or even a
    line number in the file).  I changed this message to "unknown
    symbol" but there was still no line number.
    
    Sincerely,
    john

Regards,

Andreas

ETH Zurich

Prof. em. Dr. Andreas Fischlin

Systems Ecology - Institute of Biogeochemistry and Pollutant Dynamics

CHN E 24

Universitaetstrasse 16

8092 Zurich

SWITZERLAND

andreas.fischlin@env.ethz.ch

www.sysecol.ethz.ch/people/andreas.fischlin.html

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             Make it as simple as possible, but distrust it!

________________________________________________________________________

On 8 May 2024, at 23:23, john o goyo <jog37@riddermarkfarm.ca> wrote:

Greetings, Gaius.

Here is Test.mod (greatly culled out of legacy working PIM code):

MODULE Test;
(*
 * Produces internal compiler error
 * Inside SymbolTable.GetScope, GetPsym() returns an unexpected token.
 *)

TYPE CardType = CARDINAL;

  MODULE Inside;

  EXPORT
       CardType;

  END Inside;

END Test.

Here is what happens:

=> gm2-git -c Test.mod
cc1gm2: internal compiler error: GetScope: unknown symbol
0x6d6beb m2linemap_internal_error
/home/build/opt/gcc/src/gcc-git/gcc/m2/gm2-gcc/m2linemap.cc:253
[...]

(I added some output to gm2-compiler/SymbolTable.mod to report.)

Sincerely,
john