Re: GDB PATCH to disable specific G++ demangling

[Eli Zaretskii <eliz at delorie dot com>]

> Date: Mon, 18 Dec 2000 03:42:10 -0500 (EST)
> From: Daniel Berlin <dberlin@redhat.com>
> 
> AUTO_DEMANGLING detects the mangling style automatically, and demangles it
> based on that.
> This change defaults to doing this, now that we have two very different
> demangling styles about to common usage, and we previously defaulted to
> assuming we had one of these styles (the old abi mangling) if we
> determined it was a gcc compiled program, and we were using dwarf or
> stabs.

Thanks for the explanations.  I have one question, though: If
AUTO_DEMANGLING can detect the mangling style, why was it not used
previously?  Why did the previous version trust the fact that it was
looking at a GCC-compiled program more than it trusted auto-detection?

> > > I recall that I had to make a change in GDB at the time to make it
> > recognize DJGPP programs as compiled by GCC.  I'd like to make sure
> > this change doesn't undo what I did back then.  (Unfortunately, I
> > don't have a recent snapshot on my machine and don't have time to
> > download and try it, to find this out myself.)
> 
> No, it doesn't, unless your change was broken to begin with (IE depended
> on the old-abi mangling being present, which won't work now anyway).

The change had to do with how GCC-compiled programs was recognized.
The original code didn't get it right, in the DJGPP case.  I forget
the details, but can dust them off, if that's important.