[patch] Fix bootstrap with --with-debug-prefix-map

[Rafael Espindola]

I sometimes would get a comparison failure when bootstrapping gcc with
the  --with-debug-prefix-map. I tracked the problem to the memory used
so store the map being garbage collected. The attached patch fixes it.

OK for trunk?

2009-08-14  Rafael Avila de Espindola  <espindola@google.com>

            * final.c (add_debug_prefix_map): Don't use GC memory for
             old_prefix and new_prefix.

Cheers,
-- 
Rafael Avila de Espindola

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Registered in Dublin, Ireland | Registration Number: 368047
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