It's been a while since I made this change, but as I recall
without it gdb will tend to crash when you re-start the
inferior using a 'run' command.

Now I don't know exactly the best place to reset the
innermost_block variable, but it *is* a cache variable
that must be reset whenever execution continues, including
on each 'run'.

	* infcmd.c (run_command):  Reset innermost_block.
-- 
	--Per Bothner
per@bothner.com   http://www.bothner.com/per/