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New dumping problem...

From: David Kastrup
Subject: New dumping problem...
Date: Tue, 29 Mar 2005 01:59:16 +0200
User-agent: Gnus/5.11 (Gnus v5.11) Emacs/22.0.50 (gnu/linux)

On the newest Fedora Core tests, the setarch i386 workaround is no
longer sufficient for dumping.

It turns out that one way to fix this is to use

  echo 0 >/proc/sys/kernel/randomize_va_space

(which only root can do).

Uh oh.

The error message is

Dumping under names emacs and emacs-22.0.50
Warning: Your system has a gap between BSS and the
heap (6716260 byte).  This usually means that exec-shield
or something similar is in effect.  The dump may
fail because of this.  See the section about 
exec-shield in etc/PROBLEMS for more information.
make[1]: *** [bootstrap-emacs] Segmentation fault
make[1]: Leaving directory `/usr/local/tmp/emacs-build/src'
make: *** [bootstrap-build] Error 2

It seems like we are playing catchup with the operating system's
security games.

David Kastrup, Kriemhildstr. 15, 44793 Bochum

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