Re: [patch] stack.c, check return value of lookup_symbol

[Jim Blandy <jimb@codesourcery.com>]

msnyder@sonic.net writes:
> Since it's known that lookup_symbol can return NULL, my first impulse
> was to call gdb_assert.  That still might be the right thing to do,
> since it indicates some sort of internal fault -- but it seems to
> me that it isn't necessarily fatal, and simply doing nothing is an
> option...

gdb_assert calls internal_error, so it's not going to sweep GDB out
from under the user.  And the situation we're talking about here would
be one where we found a symbol in a block, and then looked up that
name in that block and didn't find the symbol.  I definitely want to
see an internal error if that happens.