Re: Gnu Emacs and Vista ASLR feature

[Jason Rumney]

Fabrice Popineau wrote:
> What kind of problems ? Because actually, it is running ok (Gnus, 
> Slime, whatever)
> I thought about the ASLR "feature" because it stops working after a 
> reboot.
> Which is kind of strange.

It is strange that Emacs works the first time. The problems that using 
msvcrt.dll directly causes are to do with Emacs defining its own 
implementation of malloc (in gmalloc.c), and the way Windows separates 
DLLs into their own process space, so they do not share any application 
overridden standard library functions. Apparently in the startup code 
supplied by MSVC 2005 (at least), a non-standard malloc related function 
was called during heap initialization which we do not override, causing 
the function in the DLL to be called, but because prior calls to malloc 
related initialization had been handled by Emacs own malloc 
implementation, the DLL's heap was not in a state where it was ready for 
that call, and crashed.