heredoc & file descriptor parameter segfault

heredoc & file descriptor parameter segfault

[Subscriber Grey]

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Executing this
> exec {INDOC}<<----
> this is a test
> of the emergency
> broadcast system
> ---

reliably segfaults on
ZSH_VERSION=5.2, OpenBSD 6.0 GENERIC.MP#2319 amd64
ZSH_VERSION=5.3.1, Darwin 16.3.0; root:xnu-3789.31.2~1/RELEASE_X86_64 x86_64
ZSH_VERSION=5.3.1, Linux 4.9.7-x86_64-linode80 #2 SMP x86_64 GNU/Linux

Using any other combination (numeric file descriptor, here-string, etc)
seems to be fine.

This construction does not segfault on versions of bash I have available.

Re: heredoc & file descriptor parameter segfault

[Bart Schaefer]

On Feb 27,  2:06pm, Subscriber Grey wrote:
} 
} Executing this
} > exec {INDOC}<<----
} > this is a test
} > of the emergency
} > broadcast system
} > ---
} 
} reliably segfaults

The parser is quite confused by this, execution of the resulting wordcode
is attempting to find "exec" as an autoload function.  Probably indicates
that the program counter has gone astray.