[Bug debug/23190] [4.0/4.1 Regression] debug info omitted for uninitialized variables (stabs)

[dpatel at apple dot com]

------- Additional Comments From dpatel at apple dot com  2005-08-02 17:12 -------
Subject: Re:  [4.0/4.1 Regression] debug info omitted for uninitialized variables (stabs)


On Aug 2, 2005, at 10:00 AM, mmitchel at gcc dot gnu dot org wrote:

>
> ------- Additional Comments From mmitchel at gcc dot gnu dot org   
> 2005-08-02 17:00 -------
> Devang --
>
> The DWARF-2 information looks correct to me, from the section of  
> DWARF-2 code
> that you posted in the original report for this bug.  I know GDB  
> doesn't print
> the variable, but I don't think that's the compiler's fault; the  
> information
> looks OK.  Is there something wrong with the DWARF-2 generated, or  
> is this just
> a GDB bug?

Without the patch, GCC does not emit DW_OP_addr and DW_AT_location.

> I'm not oppposed to making the kind of change you're proposing for  
> the C front
> end; I suggested the same thing.  But, it is a complex change; as  
> you've noted,
> there are regressions when you try it.

There is only one regression. One way to avoid it is to split  
wrapup_global...
in two halves. One to emit code and second to generate debug info.  
This allows
C front end to put cgraph_optimize() after writing globals but before
generating debug info.

thoughts ?
-
Devang



-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=23190