$ perl -e'undef a';echo $?
Modification of a read-only value attempted at -e line 1.
Duplicate free() ignored.
Bus Error(coredump)
138
$ uname -a
SunOS boxname 5.6 Generic_105181-15 sun4u sparc SUNW,Ultra-2
$ perl -v

This is perl, v5.6.1 built for sun4-solaris
 ...