[Bug gdb/30431] segfault when inspecting remote variable

["tromey at sourceware dot org" <sourceware-bugzilla@sourceware.org>]

https://sourceware.org/bugzilla/show_bug.cgi?id=30431

--- Comment #5 from Tom Tromey <tromey at sourceware dot org> ---
Sorry about the delay on this.

I think it would be better to understand the problem a little more.
The main concern here is that there might be other spots that
would be affected, depending on the command you run; but if the
problem occurs when reading symbols and is fixed there, then that
might fix all instances of the bug.

When I run gdb on the ELF you provided, I don't see the crash.
But maybe it only occurs when connected to the target.

For me gdb thinks the symbol is in:

(top-gdb) p *obj_section.the_bfd_section
$8 = {
  name = 0x291928b "__interrupt_vector_4",


Maybe one way to reproduce the bug without me needing a working
system is a remote log.  If you can do something like:

$ gdb -nx
(gdb) set remotelogfile /tmp/whatever
(gdb) target remote ...
(gdb) break / continue / whatever to reproduce the bug
(gdb) print BCSCTL1

... then send the log.  This can be replayed here without needing
anything else.  (Though if you have to pass a file when starting
gdb, or use "file" or something like that, then the exact files
used would also be needed.)

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