Re: Insight crash I have not seen before.

[Keith Seitz <kseitz@firetalk.com>]

Mo DeJong wrote:
> 
> Nevermind the last email I sent with the stack trace. I got this
> crash a couple of times and gdb never seems to core in the same
> place twice. I think the problem is actually with gdb rereading
> symbols from and applicaiton when you recompile tha app in between
> runs in the debugger (without quitting the debugger). My app
> was also dying from a call to assert(), but I am not sure if
> that made a diff.
> 
> I was running on Red Hat 6.2 when I got these crashes by the way.

This came up last week with Tom. Fernando has some state on it. What's
happening is that the variable code that gdbtk uses (which I guess gdb
is going to slowly migrate to?) hangs on to a lot of pointers to the
symbol table and obstacks. When the symbol table is re-read (and maybe
even if you just re-run the executable), all of these references are
bogus.

We found out that a hook which is supposed to clean this up is not being
run anymore. I think this is either the clear_file or no_inferior hook.
Both the variable windows (Locals and Watch) and the SrcTextWin
(variable balloons) should be erasing any variable objects whenever the
inferior is killed/re-run or has symbols re-read.

Keith
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