gdb behavior on tight loop

[John Gilmore]

> >> Please see the gdb session below. When I run "next" on line 5, the tight
> >> loop, it will take several seconds before gdb stop on line 6 and I regain
> >> control. 
> >>
> >> If I set an additional breackpoint on line 6, and "continue" on line 5 instead
> >> of "next", everything looks good.

In situations like this, the "until" command is convenient.
You can say "u 6" and gdb will set a temporary breakpoint at line 6,
run the program at full speed until it hits that breakpoint (or some
other breakpoint or error) and then remove the temporary breakpoint.

	John Gilmore