[PATCH] Fix heap-use-after-free in index-cached with --disable-threading

[Tom Tromey]

>>>>> "Bernd" == Bernd Edlinger <bernd.edlinger@hotmail.de> writes:

Bernd> due to this incident you fixed here, I did some testing with tsan,
Bernd> and found a couple issues that I think are important, but I have no
Bernd> good idea how to solve them.
Bernd> https://sourceware.org/bugzilla/show_bug.cgi?id=31713
Bernd> https://sourceware.org/bugzilla/show_bug.cgi?id=31715
Bernd> https://sourceware.org/bugzilla/show_bug.cgi?id=31716

One option is to disable background reading, by having the DWARF reader
wait for the indexer to finish its work before returning.

This is easy to implement, but unfortunate to have to do.  Still, maybe
the best approach for GDB 15.

I'll try to look into these bugs soon.

Tom