Using both 4.2 and 4.3, I can reproduce a segfault on completion (though
not using gdb)
This can happen very consistently using a time-consuming completion like
the one for `man`, eg:
$ man g^C
Attached is the trace from a core-file using `man gpg-agent g^C`
with bash 4.3.
Side note: as more and more completions take time to finish (think ssh,
dpkg, ...), having ^G to interrupt the completion process and not having
to use ^C which discard the whole line could be useful.
Core was generated by `comp/dev/bash/bash'.
Program terminated with signal 11, Segmentation fault.
#0 0x004a0b12 in rl_completion_matches (text=0x1d858d8 "g",
entry_function=0x468b60 ) at complete.c:2142
2142 match_list[++matches] = string;
#0 0x004a0b12 in rl_completion_matches (text=0x1d858d8 "g",
entry_function=0x468b60 ) at complete.c:2142
i =
match_list_size = 0
match_list = 0x0
matches = 1
string = 0x1e452e8 "gnokii"
#1 0x0046eca0 in attempt_shell_completion (text=0x1d858d8 "g",
start=14, end=15) at bashline.c:1514
s = 0
e = 15
s1 = 0
e1 = 3
os = 14
foundcs = 1
n =
in_command_position = 0
ti =
saveti =
qc = -1
dflags =
matches =
command_separator_chars = 0x4be18b ";|&{(`"
#2 0x004a0c18 in gen_completion_matches (text=0x1d858d8 "g",
start=, end=, our_func=0x49f5c0
,
found_quote=, quote_char=) at complete.c:1162
matches =
#3 0x004a16cb in rl_complete_internal (what_to_do=63) at
complete.c:1955
matches =
our_func = 0x49f5c0
start = 14
end =
delimiter = 0
found_quote = 0
i =
nontrivial_lcd =
text = 0x1d858d8 "g"
saved_line_buffer = 0x1b026a8 "man gpg-agent g"
quote_char = 0 '\000'
tlen =
mlen =
#4 0x00498871 in _rl_dispatch_subseq (key=9, map=0x6f3920
, got_subseq=0) at readline.c:820
r = 0
newkey =
func = 0x4a1b60
cxt =
#5 0x0049901f in readline_internal_char () at readline.c:592
lastc = 9
eof_found = 0
c =
code =
lk = 0
#6 0x0049951d in readline_internal_charloop () at readline.c:619
eof =
#7 readline_internal () at readline.c:633
eof = 1
#8 readline (prompt=) at readline.c:364
value = 0x0
#9 0x004250ac in yy_readline_get () at ./parse.y:1442
old_sigint = 0x45fce0
line_len =
c =
#10 0x00426eee in yy_getc () at ./parse.y:1376
No locals.
#11 shell_getc (remove_quoted_newline=1) at ./parse.y:2244
i = 0
c =
truncating = 0
uc =
#12 0x00429c86 in read_token (command=0) at ./parse.y:2947
character =
peek_char =
result =
#13 0x0042c6db in yylex () at ./parse.y:2556
No locals.
#14 yyparse () at y.tab.c:2031
yystate =
yyerrstatus =
yyssa = {0, 66, 95, 0, 10696, 432, 0, 0, 0, 0, 304, 0, 17672, 477, 0,
0, -7233, 76, 0, 0, 17672, 477, 0, 0, -7233, 76, 291, 0, 17608, 477, 0, 0,
-28501, 75, 0,
0, 0, 0, 0, 0, 19272, 477, 0, 0, 0, 0, 0, 0, -28501, 75, 0, 0,
-21360, -4014, 32767, 0, 1, 0, 0, 0, -5230, 69, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0,
9, 0, 0, 0,
-17804, 75, 0, 0, 2437, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 24617, 71,
0, 0, -17277, 75, 603, 0, -17400, 268, 0, 0, 17544, 477, 0, 0, -11662, 75, 0,
0, 0, 0,
2554, 0, 9992, 432, 0, 0, 17544, 477, 0, 0, -17400, 268, 0, 0, 17384,
477, 0, 0, -11662, 75, 0, 0, -15480, 267, 2511, 0, 17544, 477, 0, 0, 1, 0, 0,
0, 17544,
477, 0, 0, 0, 0, 0, 0, 28488, 287, 0, 0, -28501, 75, 0, 0, 0, 0, 0,
0, 1, 0, 0, 0, -3524, 66, 0, 0, 0, 0, 0, 0, 17384, 477, 0, 0, 12296, 335, 0, 0,
5616, 0,
0, 0, 0, 0, 0, 0, -9792, 111, 0, 0}
yyss = 0x7052abf0
yyssp = 0x7052abf0
yyvsa = {{word = 0x0, number = 0, word_list = 0x0, command = 0x0,
redirect = 0x0, element = {word = 0x0, redirect = 0x482bb0 },
pattern = 0x0},
{word = 0x10cda28, number = 17619496, word_list = 0x10cda28, command
= 0x10cda28, redirect = 0x10cda28, element = {word = 0x10cda28, redirect =
0x482bfd},
pattern = 0x10cda28}, {word = 0x, number = -1, word_list =
0x, command = 0x, redirect = 0x, element = {word =
0x,
redirect = 0x435726 }, pattern =
0x}, {word = 0x0, number = 0, word_list = 0x0, command = 0x0, redirect
= 0x0, element = {
word = 0x0, redirect = 0x11185c8}, pattern = 0x0}, {word = 0x0,
number = 0, word_list = 0x0, command = 0x0, redirect = 0x0, element = {word =
0x0,
redirect = 0x}, pattern = 0x0}, {word = 0x,
number = -1, word_list = 0x, command = 0x, redirect =
0x, element = {
word
