In looking at 32076 I wonder if instead of bringing back solib-legacy we could 
   go down the route of using procfs to assist attach. This means the symbols 
   can be read and the ABI get initialised correctly. The downside is that /proc 
   needs to mounted:
   
   
   (gdb) attach 12155
   Attaching to process 12155
   /proc/12155/file: No such file or directory.
   
   which is better than gdb crashing.
   
   Anyone object to this?


this only matters for when you don't tell gdb a filename, right?

in any case, is there a way to use solib-legacy as a fall back
if /proc is not mounted?