Re: 100% CPU usage for a few minutes when visiting large Unicode file

[Richard Stallman]

        (gdb) Run till exit from #0  interrupt_signal (signalnum=2) at
        keyboard.c:10390
        Warning:
        Cannot insert breakpoint 0.
        Error accessing memory address 0xffffe420: Input/output error.

        (gdb) Run till exit from #0  interrupt_signal (signalnum=2) at
        keyboard.c:10390
        Warning:
        Cannot insert breakpoint 0.
        Error accessing memory address 0xffffe420: Input/output error.

interrupt_signal is a signal handler.  How did you stop Emacs?
Did you do it by typing a command at Emacs?  That is dumb -- it will
interfere with what happens inside Emacs.  You should stop Emacs by
going to the window where GDB is running, and typing C-z.

Anyway, it looks like GDB has a bug in returning from signal handler
commands with `finish'.  Please report the GDB bug, because we need to
get it fixed.

Meanwhile, you probably CAN proceed from this.  Just use the `up' command
to select the containing frame, and type `finish' in that one.
If you get to an ordinary (non-signal-handler) frame this way,
`finish' should work on it.