will do the "right" thing if we want NULL to map to undef.
p4raw-id: //depot/perl@32137
sv_setiv(sv, (IV)PL_hints);
break;
case '\011': /* ^I */ /* NOT \t in EBCDIC */
- if (PL_inplace)
- sv_setpv(sv, PL_inplace);
- else
- sv_setsv(sv, &PL_sv_undef);
+ sv_setpv(sv, PL_inplace); /* Will undefine sv if PL_inplace is NULL */
break;
case '\017': /* ^O & ^OPEN */
if (nextchar == '\0') {