debug strings output order is arbitrary

[Martin Uecker]

Am Mon, 17 Mar 2014 09:44:53 +0100
schrieb Richard Biener <richard.guenther@gmail.com>:

> On Sun, Mar 16, 2014 at 3:58 AM, Martin Uecker <uecker@eecs.berkeley.edu> wrote:
> >
> > Hi list,
> >
> > the strings in the ".debug_str" section are output
> > in an arbitrary order. Could this be changed?
> >
> > The function 'output_indirect_strings' in 'gcc/dwarf2out.c'
> > uses htab_traverse which then outputs the string in the
> > order they appear in the hash table. Instead, it would
> > be nicer to output them based on their labels (which are
> > assigned based on the order of creation).
> >
> > This would minimize differences between builds with
> > slightly different build environments, e.g. directory.
> 
> Can you propose a patch?  Note that at creation time only
> the string itself is known, so sorting after the string may
> be another possibility.

I will propose a patch.

Sorting at the end would be easiest, but one could also keep
track of the order. Is this performance critical?

Also it seems there is other stuff which is output/indexed
in hash table order, maybe this should be changed to.

Martin