I triggered a seg fault when I accidentally hit '&' instead of '^' in normal mode. I can easily reproduce it with the attached viminfo file (compressed for integrity) and by starting vim as
vim -N -u NONE -i vimrc
then typing
&
The lines in viminfo that seem to be causing the problem are these:
# Last Search Pattern:
~MSle0~/extern
# Last Substitute Search Pattern:
~MSle0&\<[A-Z][A-Z0-9]\+\>
# Last Substitute String:
$
Here is the backtrace from gdb.
#0 0x0000003dbfa35c47 in kill () from /lib64/libc.so.6
#1 0x000000000053f911 in may_core_dump () at os_unix.c:3251
#2 0x000000000053f8b5 in mch_exit (r=1) at os_unix.c:3217
#3 0x00000000006118a7 in getout (exitval=1) at main.c:1500
#4 0x00000000004fcfd0 in preserve_exit () at misc1.c:9166
#5 0x000000000053d9b1 in deathtrap (sigarg=11) at os_unix.c:1113
#6 <signal handler called>
#7 0x0000003dbfb2ecd6 in __strcmp_sse42 () from /lib64/libc.so.6
#8 0x0000000000481285 in do_sub (eap=0x7fffb2d1b120) at ex_cmds.c:4428
#9 0x0000000000490167 in do_one_cmd (cmdlinep=0x7fffb2d1b798, sourcing=0,
cstack=0x7fffb2d1b2f0, fgetline=0x4a5453 <getexline>, cookie=0x0) at
ex_docmd.c:2701
#10 0x000000000048d7d7 in do_cmdline (cmdline=0x0, fgetline=0x4a5453
<getexline>, cookie=0x0, flags=0) at ex_docmd.c:1126
#11 0x000000000051a17e in nv_colon (cap=0x7fffb2d1b8c0) at normal.c:5308
#12 0x0000000000512cc4 in normal_cmd (oap=0x7fffb2d1b990, toplevel=1) at
normal.c:1156
#13 0x0000000000611599 in main_loop (cmdwin=0, noexmode=0) at main.c:1325
#14 0x0000000000610fe8 in main (argc=6, argv=0x7fffb2d1bca8) at main.c:1025
The problem is that strcmp() is being called at line 4428 of
ex_cmds.c,
if (STRCMP(pat, "\\n") == 0 && STRLEN(pat) == 2
with a null value of pat. From a little poking around and
checking the values of eap->cmd, cmd and eap->skip, it appears that
pat was set to null at line 4415:
pat = NULL; /* search_regcomp() will use previous pattern */
That doesn't seem like a good thing to do.
That's as much debugging as I've had time to do today. Hope it's
enough for someone to find the root problem. Otherwise, I'll try to
get back to it next week and try it with a more recent version.
I'm running the following version of Vim on Fedora 17.
VIM - Vi IMproved 7.4 (2013 Aug 10, compiled Apr 1 2014 10:56:21)
Included patches: 1-233
Compiled by [email protected]
Normal version with GTK2 GUI. Features included (+) or not (-):
+acl -farsi -mouse_netterm +syntax
-arabic +file_in_path -mouse_sgr +tag_binary
+autocmd +find_in_path -mouse_sysmouse +tag_old_static
+balloon_eval +float -mouse_urxvt -tag_any_white
+browse +folding +mouse_xterm -tcl
+builtin_terms -footer +multi_byte +terminfo
+byte_offset +fork() +multi_lang +termresponse
+cindent +gettext -mzscheme +textobjects
+clientserver -hangul_input +netbeans_intg +title
+clipboard +iconv +path_extra +toolbar
+cmdline_compl +insert_expand -perl +user_commands
+cmdline_hist +jumplist +persistent_undo +vertsplit
+cmdline_info -keymap +postscript +virtualedit
+comments -langmap +printer +visual
-conceal +libcall -profile +visualextra
+cryptv +linebreak +python +viminfo
+cscope +lispindent -python3 +vreplace
+cursorbind +listcmds +quickfix +wildignore
+cursorshape +localmap +reltime +wildmenu
+dialog_con_gui -lua -rightleft +windows
+diff +menu -ruby +writebackup
+digraphs +mksession +scrollbind +X11
+dnd +modify_fname +signs -xfontset
-ebcdic +mouse +smartindent +xim
-emacs_tags +mouseshape -sniff +xsmp_interact
+eval -mouse_dec +startuptime +xterm_clipboard
+ex_extra +mouse_gpm +statusline -xterm_save
+extra_search -mouse_jsbterm -sun_workshop +xpm
system vimrc file: "$VIM/vimrc"
user vimrc file: "$HOME/.vimrc"
2nd user vimrc file: "~/.vim/vimrc"
user exrc file: "$HOME/.exrc"
system gvimrc file: "$VIM/gvimrc"
user gvimrc file: "$HOME/.gvimrc"
2nd user gvimrc file: "~/.vim/gvimrc"
system menu file: "$VIMRUNTIME/menu.vim"
fall-back for $VIM: "/home/gary/src/vim-7.4/share/vim"
Compilation: gcc -c -I. -Iproto -DHAVE_CONFIG_H -DFEAT_GUI_GTK -pthread
-I/usr/include/gtk-2.0 -I/usr/lib64/gtk-2.0/include -I/usr/include/atk-1.0
-I/usr/include/cairo -I/usr/include/gdk-pixbuf-2.0 -I/usr/include/pango-1.0
-I/usr/include/glib-2.0 -I/usr/lib64/glib-2.0/include -I/usr/include/pixman-1
-I/usr/include/freetype2 -I/usr/include/libpng15 -g -U_FORTIFY_SOURCE
-D_FORTIFY_SOURCE=1
Linking: gcc -L/usr/local/lib -Wl,--as-needed -o vim -lgtk-x11-2.0
-lgdk-x11-2.0 -latk-1.0 -lgio-2.0 -lpangoft2-1.0 -lpangocairo-1.0
-lgdk_pixbuf-2.0 -lcairo -lpango-1.0 -lfreetype -lfontconfig -lgobject-2.0
-lglib-2.0 -lSM -lICE -lXpm -lXt -lX11 -lXdmcp -lSM -lICE -lm -ltinfo -lnsl
-lselinux -lacl -lattr -lgpm -ldl -L/usr/lib64/python2.7/config -lpython2.7
-lpthread -ldl -lutil -lm -Xlinker -export-dynamic
Regards,
Gary
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viminfo.gz
Description: GNU Zip compressed data
