fix C<$1 .. $2> coredump under debugger

p4raw-id: //depot/perl@1574

diff --git a/pp_ctl.c b/pp_ctl.c
index c781870..5a4dcf4 100644 (file)
--- a/pp_ctl.c
+++ b/pp_ctl.c
@@ -856,6 +856,7 @@ PP(pp_flop)
            char *tmps = SvPV(final, len);
 
            sv = sv_mortalcopy(left);
+           SvPV_force(sv,na);
            while (!SvNIOKp(sv) && SvCUR(sv) <= len) {
                XPUSHs(sv);
                if (strEQ(SvPVX(sv),tmps))