Re: please set both MALLOC_PERTURB_ and MALLOC_CHECK_ envvars

[Paul Eggert]

On 05/27/11 14:50, Jim Meyering wrote:
>     export MALLOC_PERTURB_=$((RANDOM % 255 + 1))
>     export MALLOC_CHECK_=3
> 

I tried that, on Fedora 14 x86-64, and the Emacs trunk build failed
as follows:

  Compiling language/thai-word.el

  In toplevel form:
  language/thai-word.el:10738:5:Error: Memory exhausted--use C-x s then exit 
and restart Emacs
  make[2]: *** [language/thai-word.elc] Error 1
  make[2]: Leaving directory `/home/eggert/src/gnu/emacs/int-hash/lisp'

As near as I can discover, Emacs was fine, but the malloc debugging
caused it to use so much more memory that Emacs ran out of memory
trying to compile thai-word.el.  This is on a host with
8 GiB of RAM.

Perhaps there is a real Emacs bug in there somewhere, but I spent
a reasonable amount of time looking for it unsuccessfully.