Memory leak?

Memory leak?

[Alan Mackenzie]

Hi, Emacs,

in my recent attempts to build Emacs-23, I have encountered Seg-faults
continually.  These occur when the (prototype) Emacs is byte-compiling
the mass of Emacs lisp files.

However, if I just type 'make', the build continues.

My system is Debian-Sarge GNU/Linux.

My first suspicion was that my swap partition was too small.  So I
terminated all competing applications, but that didn't prevent the
problem.

So I suspect there is a store leak somewhere.  Would somebody please
suggest some appropriate tool(s) for me to look at this with.  A graphic
X-Window program continuously displaying allocated/free store is the
sort of thing I'm thinking of.

Thanks!

-- 
Alan Mackenzie (Nuremberg, Germany).

Re: Memory leak?

[David Kastrup]

Alan Mackenzie <acm@muc.de> writes:

> Hi, Emacs,
>
> in my recent attempts to build Emacs-23, I have encountered Seg-faults
> continually.  These occur when the (prototype) Emacs is byte-compiling
> the mass of Emacs lisp files.
>
> However, if I just type 'make', the build continues.
>
> My system is Debian-Sarge GNU/Linux.
>
> My first suspicion was that my swap partition was too small.  So I
> terminated all competing applications, but that didn't prevent the
> problem.
>
> So I suspect there is a store leak somewhere.

A normal leak would not likely bring a byte compile session to a
standstill.  It is more likely that you have run out of pure space when
dumping Emacs.  When that happens, garbage collection is no longer done
at all.  If you write
M-: (garbage-collect) RET
and get nil, this has happened.

Try recompiling Emacs and watch for "pure space overflow".

-- 
David Kastrup, Kriemhildstr. 15, 44793 Bochum

Re: Memory leak?

[Gilaras Drakeson]

Hi,

> in my recent attempts to build Emacs-23, I have encountered Seg-faults
> continually.  These occur when the (prototype) Emacs is byte-compiling
> the mass of Emacs lisp files.
>
> However, if I just type 'make', the build continues.
>
> My system is Debian-Sarge GNU/Linux.

Does cat /proc/sys/kernel/randomize_va_space return 2, by any chance? I
get a segfault in that case on Debian sid GNU/Linux, whenever I try to
dump-emacs.

Gilaras Drakeson