shift "fatal error"

[Dan Muresan <danmbox@xxxxxxxxx>]

Hi, is there some consensus on whether shift should cause a "fatal
error" as reported by Herbert against bash:

http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=252378

# doesn't print anything
dash -c 'shift 2; echo hi'

My copy of SUSv3 doesn't seem to imply any "fatal error" handling
requirement for shift:

--- 8-X ---
EXIT STATUS

The exit status is >0 if n>$#; otherwise, it is zero.

CONSEQUENCES OF ERRORS

Default.
--- 8-X ---

-- Dan
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