[Bug c++/21873] GDB Crashes when ^C pressed while debugging ARM-Cortex M4F

["qiyao at gcc dot gnu.org" <sourceware-bugzilla at sourceware dot org>]

https://sourceware.org/bugzilla/show_bug.cgi?id=21873

--- Comment #8 from Yao Qi <qiyao at gcc dot gnu.org> ---
(In reply to Ismail from comment #7)
> I did that works to start debugging the GDB. But, the only problem is when I
> attach the GDB that will be debugged does not responses to anything
> including Ctrl+C keystrokes. The other debugger GDB gets stop. In order to
> continue, i need to go to the other terminal and continue. That's weird.

Maybe it is easier to get coredump.  If you don't debug arm-none-eabi-gdb, does
it still crash?  If it does, you can get the coredump, and then, start your
host gdb like this,

$ gdb ./gdb ./core

and gdb command "bt" can tell us why gdb is crashed.

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