Re: Compile failure on IRIX 6.5

[Daichi Kawahata]

On Mon, 21 Feb 2005 05:21:59 -0500
Richard Stallman wrote:

> This looks like stack overflow printing an object that contains
> a pointer to itself.  Could you verify this was stack overflow?

I'm afraid I have no idea what can be considered stack overflow.

> What is the value of Vprint_length?

Although I don't know at where step of Vprint_length is required,

$ dbx ./bootstrap-emacs 
[...]
(dbx) run -q
Process 898774 (bootstrap-emacs) started
[...]
Process 898774 (bootstrap-emacs) stopped on signal SIGSEGV:
  Segmentation violation (handler sig_fixup_mask) at
  [print_object:1485 +0x8,0x101a622c]
1485  float_to_string (pigbuf, XFLOAT_DATA (obj));
(dbx) p Vprint_length
272150529 
(dbx)

> Anyway, it is not a bug that Emacs can crash if you print a
> cyclic structure with the wrong settings.

Could you tell me wrong settings of what/mine?

> The question is, why is that happening?  The crucial point for
> finding the Emacs bug is, what Lisp program is trying to print
> something,

Does that mean built-in/included Lisp program? as a total beginner,
I'd think option '-q' has Emacs not to take any initial/external
file.

> and why, and why is that object such as to get an error in
> printing.  For this, it would be useful to look at the log of
> output from bootstrapping shortly before the crash.

If it's allowed, I'll attach entire make.log, well I don't know
log of which (in the GDB or make process) you mentioned, but as
far as make process is concerned, output log just before the
crash is,

[...]
Dumping under names emacs and emacs-22.0.50
73668 pure bytes used
mv -f emacs bootstrap-emacs
gmake[1]: Leaving directory `/opt/src/i18n/emacs/src'
(cd lisp; gmake  bootstrap EMACS=../src/bootstrap-emacs)
gmake[1]: Entering directory `/opt/src/i18n/emacs/lisp'
wd=/opt/src/i18n/emacs/lisp; subdirs=`(cd $wd; find . -type d -print)`;
for file in $subdirs; do case $file in */Old | */RCS | */CVS | */CVS/*
| */.* | */. */* | */=* ) ;; *) wins="$wins $wd/$file" ;; esac; done; \
| for file in $wins; do \
   /opt/src/i18n/emacs/lisp/../update-subdirs $file; \
done;
wd=/opt/src/i18n/emacs/lisp; subdirs=`(cd $wd; find . -type d -print)`;
for file in $subdirs; do case $file in */Old | */RCS | */CVS | */CVS/*
| */.* | */. */* | */=* ) ;; *) wins="$wins $wd/$file" ;; esac; done; \
| echo Directories: $wins; \
../src/bootstrap-emacs -batch --no-site-file --multibyte -l autoload --
eval '(setq generated-autoload-file "/opt/src/i18n/emacs/lisp/
loaddefs.el")' -f batc h-update-autoloads $wins Directories: /opt/src/
i18n/emacs/lisp/. /opt/src/i18n/emacs/lisp/./net /opt/src/i18n/emacs/
lisp/./url /opt/src/i18n/emacs/lisp/./calc /opt/src/i18n/emacs/l isp/./
gnus /opt/src/i18n/emacs/lisp/./mail /opt/src/i18n/emacs/lisp/./mh-e /
opt/src/i18n/emacs/lisp/./play /opt/src/i18n/emacs/lisp/./term /opt/src/
i18n/em acs/lisp/./emacs-lisp /opt/src/i18n/emacs/lisp/./eshell /opt/
src/i18n/emacs/lisp/./calendar /opt/src/i18n/emacs/lisp/./
international /opt/src/i18n/emacs/li sp/./emulation /opt/src/i18n/emacs/
lisp/./language /opt/src/i18n/emacs/lisp/./textmodes /opt/src/i18n/
emacs/lisp/./progmodes /opt/src/i18n/emacs/lisp/./obs olete /opt/src/
i18n/emacs/lisp/./toolbar Fatal error (11)gmake[1]: *** [autoloads]
Segmentation fault (core dumped) gmake[1]: Leaving directory `/opt/src/
i18n/emacs/lisp' gmake: *** [bootstrap-build] Error 2

Regards,
-- 
Daichi