zsh crash in recent -current

[Chavdar Ivanov <ci4ic4%gmail.com@localhost>]

Hi,

On amd64 -curent from yesterday (and a couple of days earlier) I
started to get zsh crashes when tab-completing  (files, directories,
packages), similar to
.....
Core was generated by `zsh'.
Program terminated with signal SIGSEGV, Segmentation fault.
#0  0x00007cf050211540 in permmatches () from
/usr/pkg/lib/zsh/5.7/zsh/complete.so
(gdb) bt
#0  0x00007cf050211540 in permmatches () from
/usr/pkg/lib/zsh/5.7/zsh/complete.so
#1  0x00007cf050208b7c in ?? () from /usr/pkg/lib/zsh/5.7/zsh/complete.so
#2  0x00000000004550d5 in getstrvalue ()
#3  0x0000000000456085 in ?? ()
#4  0x0000000000456f67 in getindex ()
#5  0x0000000000457557 in fetchvalue ()
#6  0x0000000000471da6 in ?? ()
#7  0x0000000000476ab7 in prefork ()
#8  0x0000000000476f42 in singsub ()
#9  0x000000000042057c in evalcond ()
#10 0x0000000000421f49 in ?? ()
#11 0x000000000042bbb8 in ?? ()
#12 0x0000000000429a88 in execlist ()
........ (several repeats of the above snippet).

Rebuilding zsh did not solve it. I have been usiing the latest version
- 5.7 - since it became available in pkgsrc, under -current, and have
never had problems before; the user zsh environment hasn't changed for
a while. It is not impossiible that some of the files in this
environment is damaged, so I will recreate it from scratch and retry,
but wanted to mention it in case someone else has seen similar.
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