Re: [Sdcc-user] I am getting nowhere :(

[Jesus Calvino-F. <Je...@ec...>]

Hi Borut,

I am getting an access violation at line 94 of cpp/libcpp/line-map.c:

const struct line_map *
linemap_add (struct line_maps *set, enum lc_reason reason,
              unsigned int sysp, const char *to_file, linenum_type to_line)
{
   struct line_map *map;
   source_location start_location = set->highest_location + 1;

   if (set->used && start_location < set->maps[set->used - 
1].start_location) <-- HERE
     abort ();
.
.
.

In debug mode using VC6, set->used=0xCDCDCDCD.  That means that the 
variable was never initialized.  This is probably a C runtime library 
issue on Windows when allocating memory. Same goes for set->highest_location.

Jesus

At 10:06 PM 03/05/2009, you wrote:

>Raphael,
>
>sorry, I misunderstood where the problem is. So it is my fault!
>
>Is this a general problem or it happens only with a specific source code?
>
>It is strange that it seems everything OK on other platforms -
>regression test pass. And everything is OK if I compile sdcc on my win32
>cygming box too. I didn't try to run tests on the snapshot package...
>
>Borut
>
>
>Raphael Neider wrote:
> > Dear Borut,
> >
> >
> >>> I suppose that the problem was introduced in revision 5439 with
> >>> "src/pic16/gen.c (genNearPointerGet): fix double indirect access to
> >>> bitfields (#2782405)", so I can probably remove build 5432. Please
> >>> confirm if I can remove it.
> >>>
> >> I meant to remove revision 5436, not 5432...
> >>
> >
> > That's a definite no! Snapshots r5436 and r5441 work fine,
> > r5444 breaks in sdcpp (the preprocessor): Its output is empty!!!
> > Try "sdcpp test.c" with r5441 and compare it to r5444.
> >
> > As I see it, the upgrade to gcc cpp 4.4.0 broke things.
> > This can also be concluded from Kevins initial report,
> > though on my WinXP-box, windows does not complain about
> > sdcpp.exe encountering problems as with Kevin. Strange ...
> >
> > BTW: Kevin compiled for the default target, which is the 8051.
> > The pic16 backend is not involved at all (probably no backend is:
> > sdcc should error out in the frontend due to no tokens seen on end
> > of file).
> >
> >
> >>> Done, snapshots stored in (sdcc-snapshot-20090427) folder at the end of
> >>> http://sdcc.sourceforge.net/snap.php page.
> >>>
> >
> > Thanks a lot.
> >
> >
> >>> I copied both 5436 and 5438 revisions.
> >>> I suppose that the problem was introduced in revision 5439 with
> >>> "src/pic16/gen.c (genNearPointerGet): fix double indirect access to
> >>> bitfields (#2782405)", so I can probably remove build 5432. Please
> >>> confirm if I can remove it.
> >>>
> >>> I thing that it would be better solution to revert the fix of
> >>> #2782405 until the proper solution is found.
> >>>
> >
> > Nope, the proper solution is to fix the MinGW build of GCC CPP 4.4.0.
> > As a temporary fix, I would propose to revert r5444.
> >
> > I do not want to just put the blame on you -- I really appreciate
> > your effort in actively maintaining the preprocessor branch. This
> > time, however, some "interesting" problems seem to have crept in ...
> >
> > Best regards,
> > Raphael
> >
> > 
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