Bram,
When working on my plugin SudoEdit[1], I noticed a crash in certain
circumstances, which I can reproduce currently.
Basically, with the plugin installed, you need to do:
:e sudo://etc/fstab
[change something]
:w!
:e!
at this point, Vim crashes. Here is a backtrace:
Program received signal SIGABRT, Aborted.
0x00007ffff63d73a5 in __GI_raise (sig=6) at
../nptl/sysdeps/unix/sysv/linux/raise.c:64
64 ../nptl/sysdeps/unix/sysv/linux/raise.c: Datei oder Verzeichnis nicht
gefunden.
in ../nptl/sysdeps/unix/sysv/linux/raise.c
(gdb) bt
#0 0x00007ffff63d73a5 in __GI_raise (sig=6) at
../nptl/sysdeps/unix/sysv/linux/raise.c:64
#1 0x00007ffff63dab0b in __GI_abort () at abort.c:92
#2 0x00007ffff6410d63 in __libc_message (do_abort=2, fmt=0x7ffff6501e58 "***
glibc detected *** %s: %s: 0x%s ***\n")
at ../sysdeps/unix/sysv/linux/libc_fatal.c:189
#3 0x00007ffff641b6e6 in malloc_printerr (action=3, str=0x7ffff64fee6f
"free(): invalid pointer", ptr=<optimized out>)
at malloc.c:6283
#4 0x00007ffff641f9cc in __GI___libc_free (mem=<optimized out>) at
malloc.c:3738
#5 0x00000000004c5163 in vim_free (x=0x97c888) at misc2.c:1740
#6 0x0000000000550c8b in reset_synblock (wp=0x7f47a0) at syntax.c:3475
#7 0x0000000000405a8f in buf_freeall (buf=0x7f5f80, flags=4) at buffer.c:591
#8 0x000000000044ff89 in do_ecmd (fnum=0, ffname=0x94f560 "sudo://etc/fstab",
sfname=0x956ae0 "sudo://etc/fstab",
eap=0x7fffffffd630, newlnum=19, flags=9, oldwin=0x7f47a0) at ex_cmds.c:3593
#9 0x0000000000467d1f in do_exedit (eap=0x7fffffffd630, old_curwin=0x0) at
ex_docmd.c:7759
#10 0x00000000004679dc in ex_edit (eap=0x7fffffffd630) at ex_docmd.c:7655
#11 0x000000000045f960 in do_one_cmd (cmdlinep=0x7fffffffd818, sourcing=0,
cstack=0x7fffffffd8b0,
fgetline=0x473ccb <getexline>, cookie=0x0) at ex_docmd.c:2668
#12 0x000000000045cfb3 in do_cmdline (cmdline=0x0, fgetline=0x473ccb
<getexline>, cookie=0x0, flags=0)
at ex_docmd.c:1122
#13 0x00000000004d6df8 in nv_colon (cap=0x7fffffffddd0) at normal.c:5404
#14 0x00000000004d08fa in normal_cmd (oap=0x7fffffffde90, toplevel=1) at
normal.c:1193
#15 0x0000000000583c68 in main_loop (cmdwin=0, noexmode=0) at main.c:1282
#16 0x0000000000583733 in main (argc=1, argv=0x7fffffffe1a8) at main.c:986
What happens is, that curwin->w_s differs from curwin->w_buffer->b_s
so both should be the same. The following patch fixes it for me:
diff --git a/src/fileio.c b/src/fileio.c
--- a/src/fileio.c
+++ b/src/fileio.c
@@ -8992,6 +8992,7 @@
curwin = aco->save_curwin;
curbuf = curwin->w_buffer;
+ curwin->w_s = &(curbuf->b_s);
}
}
}
[1] http://www.vim.org/scripts/script.php?script_id=2709
regards,
Christian
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