Re: My Emacs unicode 2 crash again when I do some *Replace String (M-%)*, I give the debug informations under gdb in the attachments.

[Eli Zaretskii]

> From: Andreas Schwab <address@hidden>
> Cc: Miles Bader <address@hidden>, address@hidden
> Date: Fri, 09 Mar 2007 16:26:03 +0100
> 
> Eli Zaretskii <address@hidden> writes:
> 
> > To be user-friendlier to developers who want to debug optimized code.
> 
> GCC gives all information it has to the debugger.  It's up to the debugger
> to make best use of it.  But GCC can't invent information that does not
> exist any more.  An incoming argument register that is subsequently
> resused for something different simply does not contain the original value
> any more.

I wasn't arguing that GCC had bugs in how it produces the debug info.

I was arguing that there's no practical way for me to see a usable
backtrace in an optimized program.  No matter how you turn it, this
remains a sad fact.