Re: gdb-patches RFA: Fix pascal behavior for class fields

> Pierre Muller wrote:
> > 
> > It compiles if you put a 'program' statement at the beginning, and
> > change a.check(b) to assign the function result,
>   I tried this,
> but here is what I get after your changes:
> $ gpc  test-class-pascal.pas
> test-class-pascal.pas:4: error: undeclared identifier `class' (first use in
> this routine)
> test-class-pascal.pas:4: error:  (Each undeclared identifier is reported
> only once
> test-class-pascal.pas:4: error:  for each routine it appears in.)
> test-class-pascal.pas:6: error: undeclared identifier `x' (first use in this
> routine)
> test-class-pascal.pas:6: error: syntax error before `,'
> 
> Pierre@d620-muller ~/pas/test
> $ gpc --version
> gpc 20050331, based on gcc-3.4.4 (cygming special, gdc 0.12, using dmd
> 0.125)
> Copyright (C) 2005 Free Software Foundation, Inc.
> This is free software; see the source for copying conditions.  There is NO
> warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
> 
> Is it because I am using version 3.4.4?

gcc version is not a problem.  But your gpc is too old: classes are
supported starting from gpc-20051104 (the next version after the one
you tried).

> The problem is that I did not find any system 
> with easy installation of GPC,

AFAICS old Debian binaries should work on new systems.  In 2012
Peter Blackman generated Debian/Ubuntu package (IIRC it was
at launchpad).

>  Anyhow, by using objects instead of classes, I was able to compile the
> modified program,
> and it turns out that GPC is using 'Self' for the hidden 
> object name for stabs debugging, so that the problem probably does not apply
> to
> GPC compiled sources.
> 

Classes are transformed by GPC into pointers to objects, so
there is small difference.  Attacheched is assembler output
from gpc-20070904 using '-fextended-syntax -gstabs -O -S'
as options.

-- 
                              Waldek Hebisch
[email protected]

_______________________________________________
Gpc mailing list
[email protected]
https://www.g-n-u.de/mailman/listinfo/gpc