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Re: Problems with breakpoints in constructors
- From: "Amit S. Kale" <amitkale at linsyssoft dot com>
- To: Jason Merrill <jason at redhat dot com>
- Cc: gcc at gcc dot gnu dot org,drow at mvista dot com,Christopher Faylor <christopher dot faylor at timesys dot com>
- Date: Tue, 6 Jul 2004 18:04:14 +0530
- Subject: Re: Problems with breakpoints in constructors
- Organization: LinSysSoft Technologies Pvt Ltd
- References: <200407061124.38139.amitkale@linsyssoft.com> <xypy8lxbq77.fsf@miranda.boston.redhat.com>
On Tuesday 06 Jul 2004 12:03 pm, Jason Merrill wrote:
> On Tue, 6 Jul 2004 11:24:37 +0530, "Amit S. Kale" <amitkale@linsyssoft.com>
wrote:
> > Mangled names are emitted in debugging information generated in the
> > function add_name_and_src_coords_attributes. They are emitted as
> > attribute DW_AT_MIPS_linkage_name. This attribute is emitted for all
> > member functions except for constructors. It's not emitted when
> > DECL_ABSTRACT is true, which applies to constructors.
>
> ...which applies to the abstract instance of constructors. This should in
> turn be referenced by two concrete instances, which should have
> DW_AT_MIPS_linkage_name.
>
> > This hack generates DW_AT_MIPS_linkage_name for only one attribute.
> > add_name_and_src_coords_attributes is not called for second instance of
> > the constructor since both these constructors are instance of an abstract
> > declaration, for which add_name_and_src_coords_attributes has been called
> > at the time of first instance.
>
> That's a bug; since we (correctly) aren't attaching the linkage name to the
> abstract instance, we need to attach it to the concrete instances.
Any ideas on how to do that?
I guess add_name_and_src_coords_attributes should be called for both the
concrete instances.
Once debugging information is emitted for an abstrace instance, it's not
emitted again. There is a check to that effect. Should we get rid of this
check so that debugging information is emitted multiple times for abstrace
instances?
-Amit