How to see labels in common block

[Toon Moene]

Andy Vaught wrote:

> I thought I had posted the patch allowing g77 to emit debug info for
> common variables a year ago, but I can't find it anywhere, so here it is.
> Its against 0.5.24, but the context should allow you to apply it to any
> version.  The patch is simple, adding a single line of code and removing
> lots of #ifdefs...

Well, I haven't seen your patch before (otherwise I'd certainly have
given it a try - support of debug information for COMMON block items is
on the top-3 list of desirable improvements of g77 ...)

I bootstrapped the CVS trunk with your patch (which applied with a lot
of "offset" whining) and passed the testsuite with no regressions. 
However, the g77 testsuite doesn't seem to use the -g option (according
to the g77.log file) so I also compiled all source files with -g -c
-O[3] without adverse effects.

Richard Henderson tried another approach at this problem, after a
discussion we had during the g77 BoF session at Linux Expo in Raleigh,
last May.

His patch is at
	http://gcc.gnu.org/ml/gcc-bugs/1999-08/msg00318.html

Craig's comments are at
	http://gcc.gnu.org/ml/gcc-bugs/1999-09/msg00130.html

which made me try to compile the following with debug enabled:

      subroutine aap(a)
      dimension a(n)
      common /commie/ n
      print *,a
      end

It passed OK.

The above looks promising enough to apply your patch to the trunk - do
you already have write access ?  I.e. has the FSF received your
paperwork ?

Cheers,

-- 
Toon Moene (toon@moene.indiv.nluug.nl)
Saturnushof 14, 3738 XG  Maartensdijk, The Netherlands
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