Unbreaking gdb on Solaris post-multitarget [PR 25939]

[Rainer Orth]

Hi Tom,

> Pedro> Could this be a race somehow more exposed now due to GDB now
> Pedro> spawning worker
> Pedro> threads?  What happens if you debug a GDB that doesn't spawn worker
> Pedro> threads?  Like:
>
> Pedro> ./gdb -D ./data-directory --args ./gdb -ex "maint set worker-threads 0"
>
> You have to be sure to build without Guile if you want to try this; the
> garbage collector automatically starts threads as well.

thanks for the hint.  Fortunately, Guile is no longer bundled with
Solaris 11.4 and the libguile I had built some time ago for autogen is
32-bit only.

	Rainer

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Rainer Orth, Center for Biotechnology, Bielefeld University