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* bug#29269: 27.0.50; assertion failed: XTYPE (a) == type && XUNTAG (a, type) == ptr
@ 2017-11-12  1:19 Stefan Monnier
  2017-11-13 19:02 ` Paul Eggert
  0 siblings, 1 reply; 3+ messages in thread
From: Stefan Monnier @ 2017-11-12  1:19 UTC (permalink / raw)
  To: 29269

Package: Emacs
Version: 27.0.50


The recent changes w.r.t alignment seem to have introduced a regression
on my 32bit system:

    [...]
    ./temacs --batch  --load loadup bootstrap
    
    lisp.h:1068: Emacs fatal error: assertion failed: XTYPE (a) == type && XUNTAG (a, type) == ptr

The corresponding backtrace looks like:

    (gdb) bt
    #0  0x08196f56 in terminate_due_to_signal (sig=6, backtrace_limit=2147483647)
        at emacs.c:363
    #1  0x0821873e in die (msg=0x831ec24 "XTYPE (a) == type && XUNTAG (a, type) == ptr", file=0x831e36d "lisp.h", line=1068) at alloc.c:7431
    #2  0x0828102b in make_lisp_ptr (type=
        Lisp_Vectorlike, ptr=0x844328c <Sinternal_make_lisp_face>) at lisp.h:1068
    #3  0x0828102b in defsubr (sname=0x844328c <Sinternal_make_lisp_face>)
        at lread.c:4354
    #4  0x0814c4f0 in syms_of_xfaces () at xfaces.c:6460
    #5  0x08197c29 in main (argc=<optimized out>, argv=<optimized out>)
        at emacs.c:1220
    (gdb) 

So it looks like we're missing an alignment constraint on the Lisp_Subr
objects.


        Stefan



In GNU Emacs 27.0.50 (build 1, x86_64-unknown-linux-gnu, GTK+ Version 3.22.24)
 of 2017-11-05 built on alfajor
Repository revision: 7b20a85bf651debb66742d7ed8a55bdc883ded79
Windowing system distributor 'The X.Org Foundation', version 11.0.11905000
System Description:	Debian GNU/Linux testing (buster)

Recent messages:
Decrypting /home/monnier/share/misc/test2.gpg...done
Mark saved where search started [2 times]
delete-backward-char: Text is read-only [3 times]
Entering debugger...
Back to top level
Command: set annotate 1
Mark set
Mark saved where search started [3 times]
Mark set
Mark saved where search started [2 times]

Configured using:
 'configure -C --enable-checking --with-modules --enable-check-lisp-object-type
 'CFLAGS=-Wall -g3 -Og -Wno-pointer-sign'
 PKG_CONFIG_PATH=/home/monnier/lib/pkgconfig'

Configured features:
XPM JPEG TIFF GIF PNG RSVG IMAGEMAGICK SOUND GPM DBUS GSETTINGS NOTIFY
GNUTLS LIBXML2 FREETYPE M17N_FLT LIBOTF XFT ZLIB TOOLKIT_SCROLL_BARS
GTK3 X11 MODULES LCMS2

Important settings:
  value of $LANG: fr_CH.UTF-8
  locale-coding-system: utf-8-unix

Major mode: InactiveMinibuffer

Minor modes in effect:
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  global-prettify-symbols-mode: t
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  auto-composition-mode: t
  auto-encryption-mode: t
  auto-compression-mode: t
  line-number-mode: t
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Load-path shadows:
/home/monnier/src/emacs/elpa/packages/svg/svg hides /home/monnier/src/emacs/work/lisp/svg
/home/monnier/src/emacs/elpa/packages/ada-mode/ada-mode hides /home/monnier/src/emacs/work/lisp/progmodes/ada-mode
/home/monnier/src/emacs/elpa/packages/ada-mode/ada-stmt hides /home/monnier/src/emacs/work/lisp/progmodes/ada-stmt
/home/monnier/src/emacs/elpa/packages/ada-mode/ada-prj hides /home/monnier/src/emacs/work/lisp/progmodes/ada-prj
/home/monnier/src/emacs/elpa/packages/ada-mode/ada-xref hides /home/monnier/src/emacs/work/lisp/progmodes/ada-xref
/home/monnier/src/emacs/elpa/packages/hyperbole/set hides /home/monnier/src/emacs/work/lisp/emacs-lisp/set
/home/monnier/src/emacs/elpa/packages/landmark/landmark hides /home/monnier/src/emacs/work/lisp/obsolete/landmark
/home/monnier/src/emacs/elpa/packages/crisp/crisp hides /home/monnier/src/emacs/work/lisp/obsolete/crisp

Features:
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custom widget hashtable-print-readable backquote dbusbind inotify lcms2
dynamic-setting system-font-setting font-render-setting move-toolbar gtk
x-toolkit x multi-tty make-network-process emacs)

Memory information:
((conses 8 608518 161871)
 (symbols 24 56889 1) (miscs 20 11008 2257) (strings 16 196540 11360)
 (string-bytes 1 5388769)
 (vectors 8 84622) (vector-slots 4 2887622 174516) (floats 8 922 780)
 (intervals 28 42970 258)
 (buffers 528 110))





^ permalink raw reply	[flat|nested] 3+ messages in thread

* bug#29269: 27.0.50; assertion failed: XTYPE (a) == type && XUNTAG (a, type) == ptr
  2017-11-12  1:19 bug#29269: 27.0.50; assertion failed: XTYPE (a) == type && XUNTAG (a, type) == ptr Stefan Monnier
@ 2017-11-13 19:02 ` Paul Eggert
  2017-11-13 20:34   ` Stefan Monnier
  0 siblings, 1 reply; 3+ messages in thread
From: Paul Eggert @ 2017-11-13 19:02 UTC (permalink / raw)
  To: Stefan Monnier; +Cc: 29269

I installed some alignment-related patches into emacs-26 and just now 
merged them into master. They are supposed fix the Lisp_Subr alignment 
problem. Please give them a try.






^ permalink raw reply	[flat|nested] 3+ messages in thread

* bug#29269: 27.0.50; assertion failed: XTYPE (a) == type && XUNTAG (a, type) == ptr
  2017-11-13 19:02 ` Paul Eggert
@ 2017-11-13 20:34   ` Stefan Monnier
  0 siblings, 0 replies; 3+ messages in thread
From: Stefan Monnier @ 2017-11-13 20:34 UTC (permalink / raw)
  To: Paul Eggert; +Cc: 29269-done

> I installed some alignment-related patches into emacs-26 and just now merged
> them into master. They are supposed fix the Lisp_Subr alignment
> problem. Please give them a try.

Works for me, thanks,


        Stefan





^ permalink raw reply	[flat|nested] 3+ messages in thread

end of thread, other threads:[~2017-11-13 20:34 UTC | newest]

Thread overview: 3+ messages (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
2017-11-12  1:19 bug#29269: 27.0.50; assertion failed: XTYPE (a) == type && XUNTAG (a, type) == ptr Stefan Monnier
2017-11-13 19:02 ` Paul Eggert
2017-11-13 20:34   ` Stefan Monnier

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