I don't have all the details on this at the moment, but I ran out of
time to investigate further today. In summary, opening a new line
in a C comment causes Vim to dump core with various messages about
improper freeing of memory.
To reproduce:
$ cat baz.c
// order to avoid a message like this:
//
$ vim -N -u NONE baz.c
:so $VIMRUNTIME/ftplugin/c.vim
With the cursor on the first line, type A and hit Enter twice. I'm
not it's necessary to hit enter twice. It seems to happen more
consistently if the keys are hit in rapid succession.
Example error message:
*** glibc detected *** vim: free(): invalid next size (fast): 0x08488d88 ***
*** glibc detected *** vim: malloc(): memory corruption: 0x08488d98 ***
Inconsistency detected by ld.so: dl-open.c: 256: dl_open_worker: Assertion
`_dl_debug_initialize (0, args->nsid)->r_state == RT_CONSISTENT' failed!
Example backtrace from core dump:
(gdb) where
#0 0x00827424 in __kernel_vsyscall ()
#1 0x0013ba56 in kill () from /lib/libc.so.6
#2 0x0813e8c0 in may_core_dump () at os_unix.c:3166
#3 0x0813e860 in mch_exit (r=1) at os_unix.c:3132
#4 0x081d62ba in getout (exitval=1) at main.c:1466
#5 0x081050b0 in preserve_exit () at misc1.c:9053
#6 0x0813cc3c in deathtrap (sigarg=6) at os_unix.c:1097
#7 <signal handler called>
#8 0x00827424 in __kernel_vsyscall ()
#9 0x0013b781 in raise () from /lib/libc.so.6
#10 0x0013d04a in abort () from /lib/libc.so.6
#11 0x00179619 in __libc_message () from /lib/libc.so.6
#12 0x0017fa71 in malloc_printerr () from /lib/libc.so.6
#13 0x08108a7f in vim_free (x=0x886c400) at misc2.c:1740
#14 0x080fad89 in open_line (dir=1, flags=2, second_line_indent=0) at
misc1.c:1600
#15 0x0806fda3 in ins_eol (c=13) at edit.c:9812
#16 0x08063def in edit (cmdchar=65, startln=0, count=1) at edit.c:1313
#17 0x0812454b in invoke_edit (cap=0xbff062c0, repl=0, cmd=65, startln=0)
at normal.c:9143
#18 0x081244f1 in nv_edit (cap=0xbff062c0) at normal.c:9116
#19 0x08117cc4 in normal_cmd (oap=0xbff06368, toplevel=1) at normal.c:1193
#20 0x081d5fd9 in main_loop (cmdwin=0, noexmode=0) at main.c:1294
#21 0x081d5ad2 in main (argc=4, argv=0xbff06594) at main.c:998
Version and build info:
$ export CFLAGS=-g
$ ./configure --prefix=/home/garyjohn/src/vim-hg-new --enable-cscope
$ make
$ make install STRIP=/bin/true
$ vim --version
VIM - Vi IMproved 7.3 (2010 Aug 15, compiled Jun 19 2012 11:35:17)
Included patches: 1-556
Compiled by [email protected]
Normal version with GTK2 GUI. Features included (+) or not (-):
-arabic +autocmd +balloon_eval +browse +builtin_terms +byte_offset +cindent
+clientserver +clipboard +cmdline_compl +cmdline_hist +cmdline_info
+comments
-conceal +cryptv +cscope +cursorbind +cursorshape +dialog_con_gui +diff
+digraphs +dnd -ebcdic -emacs_tags +eval +ex_extra +extra_search -farsi
+file_in_path +find_in_path +float +folding -footer +fork() +gettext
-hangul_input +iconv +insert_expand +jumplist -keymap -langmap +libcall
+linebreak +lispindent +listcmds +localmap -lua +menu +mksession
+modify_fname
+mouse +mouseshape -mouse_dec +mouse_gpm -mouse_jsbterm -mouse_netterm
-mouse_sysmouse +mouse_xterm -mouse_urxvt +multi_byte +multi_lang -mzscheme
+netbeans_intg +path_extra -perl +persistent_undo +postscript +printer
-profile
-python -python3 +quickfix +reltime -rightleft -ruby +scrollbind +signs
+smartindent -sniff +startuptime +statusline -sun_workshop +syntax
+tag_binary
+tag_old_static -tag_any_white -tcl +terminfo +termresponse +textobjects
+title
+toolbar +user_commands +vertsplit +virtualedit +visual +visualextra
+viminfo
+vreplace +wildignore +wildmenu +windows +writebackup +X11 -xfontset +xim
+xsmp_interact +xterm_clipboard -xterm_save
system vimrc file: "$VIM/vimrc"
user vimrc file: "$HOME/.vimrc"
user exrc file: "$HOME/.exrc"
system gvimrc file: "$VIM/gvimrc"
user gvimrc file: "$HOME/.gvimrc"
system menu file: "$VIMRUNTIME/menu.vim"
fall-back for $VIM: "/home/garyjohn/src/vim-hg-new/share/vim"
Compilation: gcc -c -I. -Iproto -DHAVE_CONFIG_H -DFEAT_GUI_GTK
-I/usr/include/gtk-2.0 -I/usr/lib/gtk-2.0/include -I/usr/include/atk-1.0
-I/usr/include/cairo -I/usr/include/pango-1.0 -I/usr/include/glib-2.0
-I/usr/lib/glib-2.0/include -I/usr/include/pixman-1 -I/usr/include/freetype2
-I/usr/include/libpng12 -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 -lgdk_pixbuf-2.0
-lpangocairo-1.0 -lcairo -lpango-1.0 -lfreetype -lfontconfig -lgobject-2.0
-lgmodule-2.0 -lglib-2.0 -lSM -lICE -lXpm -lXt -lX11 -lXdmcp -lSM -lICE -lm
-ltinfo -lelf -lnsl -lselinux -lacl -lattr -lgpm
System is Fedora 11 Linux.
Regards,
Gary
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