Re: Fix for Cygwin/GSlice problem

[Ken Brown]

On 12/9/2009 9:31 AM, Stefan Monnier wrote:
> > > > > +/* Emacs supplies its own malloc, but glib (part of Gtk+) calls
> > > > > + memalign and on Cygwin, that becomes the Cygwin supplied memalign.
> > > > > + As malloc is not the Cygwin malloc, the Cygwin memalign always
> > > > > + returns ENOSYS. A workaround is to set G_SLICE=always-malloc. */
> > > > > +#define G_SLICE_ALWAYS_MALLOC
> > > > Why does Cygwin-Emacs use its own malloc rather than the system malloc?
> > Emacs prefers its own malloc when the system malloc doesn't have the
> > required hooks.  If this is critical or not I don't know.
>
> I'd suggest we try to use Cygwin's system malloc, with a clear comment
> about why we don't use our own, and what kind of workaround could be
> used (the G_SLICE_ALWAYS_MALLOC) if we wanted to use our own.

OK, I'll give it a try and report back.  I assume the way to do this is 
to remove '#define G_SLICE_ALWAYS_MALLOC' from src/s/cygwin.h and 
instead #define SYSTEM_MALLOC.  [You don't need to respond unless this 
is wrong.]

Ken