const declaration fixup

[p5sagit/p5-mst-13.2.git] / pp_hot.c

diff --git a/pp_hot.c b/pp_hot.c
index 5d2388d..1a40441 100644 (file)
--- a/pp_hot.c
+++ b/pp_hot.c
@@ -1466,6 +1466,8 @@ Perl_do_readline(pTHX)
                report_evil_fh(PL_last_in_gv, io, PL_op->op_type);
        }
        if (gimme == G_SCALAR) {
+           /* undef TARG, and push that undefined value */
+           SV_CHECK_THINKFIRST_COW_DROP(TARG);
            (void)SvOK_off(TARG);
            PUSHTARG;
        }
@@ -1527,6 +1529,7 @@ Perl_do_readline(pTHX)
                }
            }
            if (gimme == G_SCALAR) {
+               SV_CHECK_THINKFIRST_COW_DROP(TARG);
                (void)SvOK_off(TARG);
                SPAGAIN;
                PUSHTARG;
@@ -2126,7 +2129,8 @@ PP(pp_subst)
            sv_catpvn(dstr, s, strend - s);
 
        (void)SvOOK_off(TARG);
-       Safefree(SvPVX(TARG));
+       if (SvLEN(TARG))
+           Safefree(SvPVX(TARG));
        SvPVX(TARG) = SvPVX(dstr);
        SvCUR_set(TARG, SvCUR(dstr));
        SvLEN_set(TARG, SvLEN(dstr));
@@ -2696,7 +2700,7 @@ try_autoload:
            else {
                sub_name = sv_newmortal();
                gv_efullname3(sub_name, gv, Nullch);
-               DIE(aTHX_ "Undefined subroutine &%s called", SvPVX(sub_name));
+               DIE(aTHX_ "Undefined subroutine &%"SVf" called", sub_name);
            }
        }
        if (!cv)
@@ -2713,8 +2717,8 @@ Perl_sub_crush_depth(pTHX_ CV *cv)
     else {
        SV* tmpstr = sv_newmortal();
        gv_efullname3(tmpstr, CvGV(cv), Nullch);
-       Perl_warner(aTHX_ packWARN(WARN_RECURSION), "Deep recursion on subroutine \"%s\"",
-               SvPVX(tmpstr));
+       Perl_warner(aTHX_ packWARN(WARN_RECURSION), "Deep recursion on subroutine \"%"SVf"\"",
+               tmpstr);
     }
 }
 
@@ -2730,7 +2734,7 @@ PP(pp_aelem)
     SV *sv;
 
     if (SvROK(elemsv) && !SvGAMAGIC(elemsv) && ckWARN(WARN_MISC))
-       Perl_warner(aTHX_ packWARN(WARN_MISC), "Use of reference \"%s\" as array index", SvPV_nolen(elemsv));
+       Perl_warner(aTHX_ packWARN(WARN_MISC), "Use of reference \"%"SVf"\" as array index", elemsv);
     if (elem > 0)
        elem -= PL_curcop->cop_arybase;
     if (SvTYPE(av) != SVt_PVAV)