make $1 et al readonly under threads; make C<undef $1> fail like
authorGurusamy Sarathy <gsar@cpan.org>
Sat, 28 Nov 1998 11:27:46 +0000 (11:27 +0000)
committerGurusamy Sarathy <gsar@cpan.org>
Sat, 28 Nov 1998 11:27:46 +0000 (11:27 +0000)
commita3f914c54a06647534c0855205d45eb950aebdd4
tree8bada15a2dcc58072ddcdefbe9a64796f0017be0
parent60ad88b8fe9480f2f097fca26f4f3a9f83a4f830
make $1 et al readonly under threads; make C<undef $1> fail like
C<$1 = undef> does

p4raw-id: //depot/perl@2335
op.c
pp.c
t/op/undef.t