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Re: gc-sections and DWARF ranges

From: Cary Coutant <ccoutant at google dot com>
To: Richard Henderson <rth at redhat dot com>
Cc: binutils at sourceware dot org
Date: Fri, 22 Oct 2010 10:50:37 -0700
Subject: Re: gc-sections and DWARF ranges
References: <20101021214058.GW8337@caradoc.them.org> <4CC1B066.5000306@redhat.com>

>> Is there any provision in GNU ld for this that I'm not seeing? ?We
>> ought to remove discarded entries with knowledge of the .debug_ranges
>> output; I don't see how we can get this right otherwise.
>
> Isn't this ideally handled with section groups?

Yes, it is, but I think gcc is a long way from being able to emit
debug info as part of a comdat group. I think other binutils tools
(readelf, objdump) may also need some work in order to handle
relocatable objects with several sets of debug sections.

-cary

References:
- gc-sections and DWARF ranges
  - From: Daniel Jacobowitz
- Re: gc-sections and DWARF ranges
  - From: Richard Henderson

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