Hi
afl-fuzz found this case which causes the
internal error E315 in latest vim-8.0.760
and older:
$ vim -u NONE -c 'h|0f|ps.'
It gives:
"help.txt" [readonly] 225 lines, 8437 characters
"[No Name]" [Not edited][readonly] line 1 of 227 --0%-- col 1
Error detected while processing command line:
E315: ml_get: invalid lnum: 2
E315: ml_get: invalid lnum: 3
E315: ml_get: invalid lnum: 3
Press ENTER or type command to continue
Stack with gdb:
$ gdb --args ./vim -u NONE -c 'h|0f|ps.'
(gdb) br memline.c:2455
Breakpoint 1 at 0x8100400: file memline.c, line 2455.
(gdb) run
Breakpoint 1, ml_get_buf (buf=0x836eb88, lnum=2, will_change=0) at
memline.c:2455
2455 IEMSGN(_("E315: ml_get: invalid lnum: %ld"), lnum);
(gdb) bt
#0 ml_get_buf (buf=0x836eb88, lnum=2, will_change=0) at memline.c:2455
#1 0x08108d48 in plines_win_nofold (wp=0x836d4d0, lnum=2) at misc1.c:2015
#2 0x08108e1a in plines_win_nofill (wp=0x836d4d0, lnum=2,
winheight=1) at misc1.c:1998
#3 0x08108e59 in plines_win (wp=0x836d4d0, lnum=2, winheight=1) at misc1.c:1965
#4 0x0811c1b7 in curs_rows (wp=0x836d4d0) at move.c:740
#5 0x0811e045 in curs_columns (may_scroll=1) at move.c:951
#6 0x0811e2bc in validate_cursor () at move.c:642
#7 0x081994e1 in find_pattern_in_path (ptr=0x832c27a ".", dir=0,
len=1, whole=1,
skip_comments=1, type=1, count=0, action=2, start_lnum=1, end_lnum=227)
at search.c:5459
#8 0x080b2f6b in ex_findpat (eap=0xbfffeb54) at ex_docmd.c:10489
#9 0x080b3066 in ex_psearch (eap=0xbfffeb54) at ex_docmd.c:10433
#10 0x080b9c95 in do_one_cmd (cookie=0x0, fgetline=0x0,
cstack=0xbfffec54, sourcing=1,
cmdlinep=0xbfffeae8) at ex_docmd.c:2951
#11 do_cmdline (cmdline=0xbffff319 "h|0f|ps.", fgetline=0x0,
cookie=0x0, flags=11)
at ex_docmd.c:1089
#12 0x080bd952 in do_cmdline_cmd (cmd=0xbffff319 "h|0f|ps.") at ex_docmd.c:689
#13 0x08227c82 in exe_commands (parmp=0x8313500 <params>) at main.c:2960
#14 vim_main2 () at main.c:805
#15 0x0805661b in main (argc=5, argv=0xbffff114) at main.c:419
Regards
Dominique
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