Large compound commands resulting in a segfault

Hi, 

The following script generates a compound command consisting of many instances 
of the : command. I have found that it reproducibly induces a segfault in all 
versions of bash from 2 onwards. I tested various other shells - several more 
than are implied here - all of which could handle the generated code without 
issue.

#!/bin/bash
shells=('busybox sh' dash posh ksh mksh bash)
code=$(printf '{ '; printf '%.s:; ' {1..50000}; printf '}')
for shell in "${shells[@]}"; do
    type "${shell%% *}" &>/dev/null || continue
    echo "testing: $shell"
    echo "$code" | $shell || echo "$shell failed"
done

-- 
Kerin Millar <kfm@plushkava.net>