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Date: Wed, 5 Aug 2015 19:59:31 +0200
Message-ID: <CAHYJk3Thbi1rbT02_QzSMjjiqpSVQ3awtEkGi0nYHrY8ZbAPnA@mail.gmail.com>
Subject: typeset -T crash
From: Mikael Magnusson <mikachu@gmail.com>
To: zsh workers <zsh-workers@zsh.org>
Content-Type: text/plain; charset=UTF-8

typeset -T i j k; typeset -T j i k

Program received signal SIGSEGV, Segmentation fault.
bin_typeset (name=0x7ffff7ff67e8 "typeset", argv=0x7ffff7ff6828, assigns=0x0,
    ops=0x7fffffffce20, func=0) at builtin.c:2680
2680                tdp->joinchar = joinchar;
(gdb) bt
#0  bin_typeset (name=0x7ffff7ff67e8 "typeset", argv=0x7ffff7ff6828,
assigns=0x0,
    ops=0x7fffffffce20, func=0) at builtin.c:2680
#1  0x000000000041da86 in execbuiltin (args=args@entry=0x7ffff7ff6758,
    assigns=assigns@entry=0x0, bn=bn@entry=0x6ae640 <builtins+4096>)
at builtin.c:480
#2  0x000000000042c357 in execcmd (state=state@entry=0x7fffffffd460,
input=input@entry=0,
    output=output@entry=0, how=<optimized out>, how@entry=18, last1=1)
at exec.c:3622
#3  0x000000000042c871 in execpline2 (state=state@entry=0x7fffffffd460,
    pcode=pcode@entry=131, how=how@entry=18, input=0, output=0,
last1=last1@entry=1)
    at exec.c:1724
#4  0x000000000042ce7b in execpline (state=state@entry=0x7fffffffd460,
    slcode=<optimized out>, how=how@entry=18, last1=1) at exec.c:1507
#5  0x000000000042dcda in execlist (state=state@entry=0x7fffffffd460,
    dont_change_job=dont_change_job@entry=0, exiting=exiting@entry=1)
at exec.c:1277
#6  0x000000000042e1a0 in execode (p=0x7ffff7ff6588,
    dont_change_job=dont_change_job@entry=0, exiting=exiting@entry=1,
    context=context@entry=0x492af7 "cmdarg") at exec.c:1074
#7  0x000000000042e235 in execstring (s=0x7fffffffda66 "typeset -T i j
k; typeset -T j i k",
    dont_change_job=dont_change_job@entry=0, exiting=exiting@entry=1,
    context=context@entry=0x492af7 "cmdarg") at exec.c:1040
(gdb) p tdp
$1 = (struct tieddata *) 0x0


I don't know what any of the things are, and the comment looks like PWS does.

I would have thought the earlier checks that i/j and j/i are scalar /
array respectively respectively would have stopped the code until we
got to this point though?

-- 
Mikael Magnusson