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bug#17288: SegFault with emacs in CPP header file (long constructor)


From: Dan Faudemer
Subject: bug#17288: SegFault with emacs in CPP header file (long constructor)
Date: Thu, 17 Apr 2014 14:04:44 +0200

From: address@hidden
To: address@hidden
Subject: 24.3; Segfault in CPP Header File with linum
Date: Thu, 17 Apr 2014 07:00:58 -0500
Message-ID: <>
--text follows this line--

Hello,

I have some issue with emacs in a long intialisation constructor, emacs
exit with a segault.

My .emacs contains :
(global-linum-mode 1)
(set-default 'truncate-lines t)

And the header file bug.h :
    aaaaaaaaaaa("aaaaaaaaaaa"),aaaaaaaaaaa("aaaaaaaaaaa"),aaaaaaaaaaa("aaaaaaaaaaa"),aaaaaaaaaaa("aaaaaaaaaaa"),aaaaaaaaaaa("aaaaaaaaaaa"),aaaaaaaaaaa("aaaaaaaaaaa"),aaaaaaaaaaa("aaaaaaaaaaa"),aaaaaaaaaaa("aaaaaaaaaaa"),aaaaaaaaaaa("aaaaaaaaaaa"),aaaaaaaaaaa("aaaaaaaaaaa"),aaaaaaaaaaa("aaaaaaaaaaa"),aaaaaaaaaaa("aaaaaaaaaaa"),aaaaaaaaaaa("aaaaaaaaaaa"),aaaaaaaaaaa("aaaaaaaaaaa"),aaaaaaaaaaa("aaaaaaaaaaa"),aaaaaaaaaaa("aaaaaaaaaaa"),aaaaaaaaaaa("aaaaaaaaaaa"),aaaaaaaaaaa("aaaaaaaaaaa"),aaaaaaaaaaa("aaaaaaaaaaa"),aaaaaaaaaaa("aaaaaaaaaaa"),aaaaaaaaaaa("aaaaaaaaaaa"),aaaaaaaaaaa("aaaaaaaaaaa"),aaaaaaaaaaa("aaaaaaaaaaa"),aaaaaaaaaaa("aaaaaaaaaaa"),aaaaaaaaaaa("aaaaaaaaaaa"),aaaaaaaaaaa("aaaaaaaaaaa"),aaaaaaaaaaa("aaaaaaaaaaa"),aaaaaaaaaaa("aaaaaaaaaaa"),aaaaaaaaaaa("aaaaaaaaaaa"),aaaaaaaaaaa("aaaaaaaaaaa"),aaaaaaaaaaa("aaaaaaaaaaa"),aaaaaaaaaaa("aaaaaaaaaaa"),aaaaaaaaaaa("aaaaaaaaaaa"),aaaaaaaaaaa("aaaaaaaaaaa"),aaaaaaaaaaa("aaaaaaaaaaa"),aaaaaaaaaaa("aaaaaaaaaaa"),aaaaaaaaaaa("aaaaaaaaaaa"),aaaaaaaaaaa("aaaaaaaaaaa"),aaaaaaaaaaa("aaaaaaaaaaa"),aaaaaaaaaaa("aaaaaaaaaaa"),aaaaaaaaaaa("aaaaaaaaaaa"),aaaaaaaaaaa("aaaaaaaaaaa"),aaaaaaaaaaa("aaaaaaaaaaa"),aaaaaaaaaaa("aaaaaaaaaaa"),aaaaaaaaaaa("aaaaaaaaaaa"),aaaaaaaaaaa("aaaaaaaaaaa"),aaaaaaaaaaa("aaaaaaaaaaa"),aaaaaaaaaaa("aaaaaaaaaaa"),aaaaaaaaaaa("aaaaaaaaaaa"),aaaaaaaaaaa("aaaaaaaaaaa"),aaaaaaaaaaa("aaaaaaaaaaa"),aaaaaaaaaaa("aaaaaaaaaaa"),aaaaaaaaaaa("aaaaaaaaaaa"),aaaaaaaaaaa("aaaaaaaaaaa"),aaaaaaaaaaa("aaaaaaaaaaa"),aaaaaaaaaaa("aaaaaaaaaaa"),aaaaaaaaaaa("aaaaaaaaaaa"),aaaaaaaaaaa("aaaaaaaaaaa"),aaaaaaaaaaa("aaaaaaaaaaa"),aaaaaaaaaaa("aaaaaaaaaaa"),aaaaaaaaaaa("aaaaaaaaaaa"),aaaaaaaaaaa("aaaaaaaaaaa"),aaaaaaaaaaa("aaaaaaaaaaa"),aaaaaaaaaaa("aaaaaaaaaaa"),aaaaaaaaaaa("aaaaaaaaaaa"),aaaaaaaaaaa("aaaaaaaaaaa"),aaaaaaaaaaa("aaaaaaaaaaa"),aaaaaaaaaaa("aaaaaaaaaaa"),aaaaaaaaaaa("aaaaaaaaaaa"),aaaaaaaaaaa("aaaaaaaaaaa"),aaaaaaaaaaa("aaaaaaaaaaa"),aaaaaaaaaaa("aaaaaaaaaaa"),aaaaaaaaaaa("aaaaaaaaaaa"),aaaaaaaaaaa("aaaaaaaaaaa"),aaaaaaaaaaa("aaaaaaaaaaa"),aaaaaaaaaaa("aaaaaaaaaaa"),aaaaaaaaaaa("aaaaaaaaaaa"),aaaaaaaaaaa("aaaaaaaaaaa"),aaaaaaaaaaa("aaaaaaaaaaa"),aaaaaaaaaaa("aaaaaaaaaaa"),aaaaaaaaaaa("aaaaaaaaaaa"),aaaaaaaaaaa("aaaaaaaaaaa"),aaaaaaaaaaa("aaaaaaaaaaa"),aaaaaaaaaaa("aaaaaaaaaaa"),aaaaaaaaaaa("aaaaaaaaaaa"),aaaaaaaaaaa("aaaaaaaaaaa"),aaaaaaaaaaa("aaaaaaaaaaa"),aaaaaaaaaaaaaaa("aaaaaaaaaaaaaaaaa"), aaaaaaaaaaaaaaaaa("aaaaaaaaaaaaaaaaa"), aaaaaaaaaaaaaaaaa("aaaaaaaaaaaaaaaaa"), aaaaaaaaaaaaaaaaa("aaaaaaaaaaaaaaaaa"),
                aaaaaaaaaaaaaaaaa("aaaaaaaaaaaaaaaaa"), aaaaaaaaaaaaaaaaa("aaaaaaaaaaaaaaaaa"),taaaaaaaaaaaaaaaaa("aaaaaaaaaaaaaaaaa"),saaaaaaaaaaaaaaaaa("aaaaaaaaaaaaaaaaa"),aaaaaaaaaaaaaaaaa("aaaaaaaaaaaaaaaaa"),gaaaaaaaaaaaaaaaaa("aaaaaaaaaaaaaaaaa"),caaaaaaaaaaaaaaaaa("aaaaaaaaaaaaaaaaa"),laaaaaaaaaaaaaaaaa("aaaaaaaaaaaaaaaaa"),saaaaaaaaaaaaaaaaa("aaaaaaaaaaaaaaaaa"),aaaaaaaaaaaaaaaaa("aaaaaaaaaaaaaaaaa"),aaaaaaaaaaaaaaaaa("aaaaaaaaaaaaaaaaa"),laaaaaaaaaaaaaaaaa("aaaaaaaaaaaaaaaaa"),_aaaaaaaaaaaaaaaaa("aaaaaaaaaaaaaaaaa"),aaaaaaaaaaaaaaaaa("aaaaaaaaaaaaaaaaa"),aaaaaaaaaaaaaaaaa("aaaaaaaaaaaaaaaaa"), aaaaaaaaaaaaaaa("aaaaaaaaaaaaaaaaa"),faaaaaaaaaaaaaaaaa("aaaaaaaaaaaaaaaaa")

To reproduce the segfault you have to put the cursor on the second line
and press the button to go to the end of the line.

Emacs return to me this error :
/usr/bin/emacs[0x4ef391]
/usr/bin/emacs[0x4d4dbd]
/usr/bin/emacs[0x4ef2ee]
/usr/bin/emacs[0x4ef6a3]
/lib64/libpthread.so.0[0x2b8f483b6be0]
/usr/bin/emacs[0x498926]
/usr/bin/emacs[0x49c180]
/usr/bin/emacs[0x43aab9]
/usr/bin/emacs[0x43abf5]
/usr/bin/emacs[0x44b2dc]
/usr/bin/emacs[0x44f0ff]
/usr/bin/emacs[0x454f8b]
/usr/bin/emacs[0x457349]
/usr/bin/emacs[0x545aa3]
/usr/bin/emacs[0x458675]
/usr/bin/emacs[0x4e2939]
/usr/bin/emacs[0x4e4da7]
/usr/bin/emacs[0x4e6c7b]
/usr/bin/emacs[0x545bf6]
/usr/bin/emacs[0x4dd6ea]
/usr/bin/emacs[0x545cea]
/usr/bin/emacs[0x4dde40]
/usr/bin/emacs[0x4ddf8a]
/usr/bin/emacs[0x4d5ba6]
/lib64/libc.so.6(__libc_start_main+0xf4)[0x3affa1d994]
/usr/bin/emacs[0x413f19]
 
And with emacs -Q
Fatal error 11: Segmentation fault
Backtrace:
/usr/bin/emacs[0x4ef391]
/usr/bin/emacs[0x4d4dbd]
/usr/bin/emacs[0x4ef2ee]
/usr/bin/emacs[0x4ef6a3]
/lib64/libpthread.so.0[0x2b05af4dbbe0]
/usr/bin/emacs[0x498926]
/usr/bin/emacs[0x49c180]
/usr/bin/emacs[0x43aab9]
/usr/bin/emacs[0x43abf5]
/usr/bin/emacs[0x44b2dc]
/usr/bin/emacs[0x44f0ff]
/usr/bin/emacs[0x454f8b]
/usr/bin/emacs[0x457349]
/usr/bin/emacs[0x545aa3]
/usr/bin/emacs[0x458675]
/usr/bin/emacs[0x4e2939]
/usr/bin/emacs[0x4e4da7]
/usr/bin/emacs[0x4e6c7b]
/usr/bin/emacs[0x545bf6]
/usr/bin/emacs[0x4dd6ea]
/usr/bin/emacs[0x545cea]
/usr/bin/emacs[0x4dde40]
/usr/bin/emacs[0x4ddf8a]
/usr/bin/emacs[0x4d5ba6]
/lib64/libc.so.6(__libc_start_main+0xf4)[0x3affa1d994]
/usr/bin/emacs[0x413f19]

Regards,

Dan.

In GNU Emacs 24.3.1 (x86_64-unknown-linux-gnu, GTK+ Version 2.14.7)
 of 2013-05-22 on bkahne-ec1
System Description:    Red Hat Enterprise Linux Client release 5.8 (Tikanga)

Configured using:
 `configure '--prefix=/usr/'
 '--with-x-toolkit=gtk'
 'LDFLAGS=-Wl,-R/pkg/gtk+-/2.14.7/x86_64-linux/lib''

Important settings:
  value of $LANG: en_US.UTF-8
  locale-coding-system: utf-8-unix
  default enable-multibyte-characters: t

Major mode: C/l

Minor modes in effect:
  global-linum-mode: t
  linum-mode: t
  tooltip-mode: t
  mouse-wheel-mode: t
  tool-bar-mode: t
  menu-bar-mode: t
  file-name-shadow-mode: t
  global-font-lock-mode: t
  font-lock-mode: t
  auto-composition-mode: t
  auto-encryption-mode: t
  auto-compression-mode: t
  line-number-mode: t
  transient-mark-mode: t
  abbrev-mode: t

Recent input:
ESC [ > 0 ; 1 1 5 ; 0 c ESC x r e p o TAB r TAB RE
T

Recent messages:
("/usr/bin/emacs" "-bg" "black" "-fg" "#FFFFFF" "bug.h")
For information about GNU Emacs and the GNU system, type C-h C-a.
Loading cc-langs...done
Making completion list...

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