Re: [RFC] breakpoint.c: Fix nasty problem with msvcrt DLL on Windows

[Pedro Alves <pedro@codesourcery.com>]

(Please don't top post.)

On Friday 13 August 2010 09:46:46, Pierre Muller wrote:
> > On Thursday 05 August 2010 12:35:51, Pierre Muller wrote:
> > > (gdb) maint inf b
> > > Num     Type           Disp Enb Address    What
> > > -10     longjmp master keep n   0x61093868 <longjmp> inf 1
> > > -11     longjmp master keep n   0x77c06d74  inf 1
> > >
> > > (gdb) n
> > > Warning:
> > > Cannot insert breakpoint -11.
> > > Error accessing memory address 0x77c06d74: Input/Output error.
> > 
> > 1. Did we really try to insert a Enb=n breakpoint?
> > 2. Did we really try to insert a longjmp master breakpoint?
> > 
> > If yes to any of those, something else is broken.

>  If I understood the code correctly,
> "longjmp master" breakpoints type are internal breakpoints
> that stay always disabled and never get enabled.

(...)

>   If my analysis is correct, the answer to your two questions
> is no.

Your analysis is correct.  But then why did gdb print
"Cannot insert breakpoint -11.", with -11 being the
number of one of the internal longjmp master breakpoints?
Are we copying the breakpoint number when creating the
longjmp momentary breakpoints from the master, meaning that's
a red herring (though one that I'd like fixed), or is there
something else really broken?

-- 
Pedro Alves