Re: Crash when capturing command output in completion

[Vin Shelton <acs@alumni.princeton.edu>]

On Thu, Jan 15, 2015 at 7:27 PM, Bart Schaefer
<schaefer@brasslantern.com> wrote:
> What's in your zle-line-init function?

Here's a simpler formulation, requiring only compint:

(gdb) run
Starting program: /raid-3tb/opt/zsh-2015-01-15-1337/bin/zsh -f
legolas-i5% autoload -U compinit
legolas-i5% compinit -u
legolas-i5% installed_packages
apel build c-support calc cc-mode cedet-common debug dired easypg ecb
ecrypto edebug ediff edit-utils efs eieio elib emerge fsf-compat
general-docs gnus ibuffer igrep ilisp ispell mail-lib mmm-mode
net-utils os-utils pc pcl-cvs perl-modes pgg prog-modes ps-print psgml
psgml-dtds python-modes re-builder ruby-modes semantic sgml sh-script
speedbar supercite texinfo text-modes tramp vc xemacs-base
xemacs-devel
legolas-i5% echo $(installed_packages<TAB>

This prints " )" before

Program received signal SIGSEGV, Segmentation fault.
0x00007ffff7379d40 in ?? () from /lib/x86_64-linux-gnu/libc.so.6
(gdb) bt
#0  0x00007ffff7379d40 in ?? () from /lib/x86_64-linux-gnu/libc.so.6
#1  0x00007ffff6367d6a in callcompfunc (s=0x7ffff7ff47a8 "installed_packages",
    fn=0x754df0 "_main_complete") at compcore.c:743
#2  0x00007ffff6368ced in makecomplist (s=0x7ffff7ff47a8
"installed_packages", incmd=0, lst=0)
    at compcore.c:989
#3  0x00007ffff6366915 in do_completion (dummy=0x7ffff67dab48 <zlehooks+40>,
    dat=0x7fffffffd800) at compcore.c:349
#4  0x00000000004682ac in runhookdef (h=0x7ffff67dab48 <zlehooks+40>,
d=0x7fffffffd800)
    at module.c:996
#5  0x00007ffff65c02ed in docompletion (s=0x75f128 "", lst=0, incmd=0)
at zle_tricky.c:2282
#6  0x00007ffff65bba42 in docomplete (lst=0) at zle_tricky.c:866
#7  0x00007ffff65ba345 in expandorcomplete (args=0x7ffff67db0c8 <zlenoargs>)
    at zle_tricky.c:315
#8  0x00007ffff65b9f2a in completecall (args=0x7ffff67db0c8
<zlenoargs>) at zle_tricky.c:208
#9  0x00007ffff65a7502 in execzlefunc (func=0x7ffff67d76a0 <thingies+1920>,
    args=0x7ffff67db0c8 <zlenoargs>, set_bindk=0) at zle_main.c:1345
#10 0x00007ffff65a66d6 in zlecore () at zle_main.c:1066
#11 0x00007ffff65a7060 in zleread (lp=0x6dbcf0 <prompt>, rp=0x0,
flags=3, context=0,
    init=0x7ffff65cd14d "zle-line-init", finish=0x7ffff65cd13d
"zle-line-finish")
    at zle_main.c:1253
#12 0x00007ffff65a9b65 in zle_main_entry (cmd=1, ap=0x7fffffffdde8) at
zle_main.c:1914
#13 0x000000000044f2a0 in zleentry (cmd=1) at init.c:1516
#14 0x0000000000450197 in inputline () at input.c:287
#15 0x000000000045000b in ingetc () at input.c:221
#16 0x0000000000443699 in ihgetc () at hist.c:361
#17 0x0000000000459b4a in gettok () at lex.c:583
#18 0x0000000000459322 in zshlex () at lex.c:264
#19 0x000000000047c78f in parse_event (endtok=37) at parse.c:538
#20 0x000000000044bd75 in loop (toplevel=1, justonce=0) at init.c:145
#21 0x000000000044f794 in zsh_main (argc=2, argv=0x7fffffffe178) at init.c:1671
#22 0x000000000040e82d in main (argc=2, argv=0x7fffffffe178) at ./main.c:93
(gdb)

  - Vin