[Bug default/25024] dwz: Multifile temporary files too large

["vries at gcc dot gnu.org" <sourceware-bugzilla@sourceware.org>]

https://sourceware.org/bugzilla/show_bug.cgi?id=25024

Tom de Vries <vries at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Severity|normal                      |enhancement

--- Comment #9 from Tom de Vries <vries at gcc dot gnu.org> ---
There are a few things to mention here:
- there is no clear reason why this should be an error, we could also warn
  about not being able to add to the temporary files, and continue the
  multifile optimization
- it should be possible to continue writing at the point we run into an error
  now, by switching to 64-bit dwarf, but reading 64-bit dwarf is currently not
  supported.
- the setup of collecting all the info for the multifile optimization into
  one temporary file per section is very convenient because it follows the way
  single-file optimization is done closely.  But things don't have to be setup
  like that. We could also have one temporary file per section per input file,
  which would fix the limitation we're running into here.  Of course we'd
  spent more effort juggling things around once we start reading in those
files,
  but there is also the possibility that we'd be able to manage memory in
  a more fine-grained way, which could possibly reduce peak memory usage.

For now, I'm classifying this as enhancement, given that we're running into an
implementation-defined limitation, which dwz is correctly reporting.

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