fix for missed accounting for null byte in pack("Z",...) (from

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

diff --git a/op.c b/op.c
index 64b8006..681efae 100644 (file)
--- a/op.c
+++ b/op.c
@@ -321,9 +321,12 @@ S_pad_findlex(pTHX_ char *name, PADOFFSET newoff, U32 seq, CV* startcv,
                        }
                    }
                    else if (!CvUNIQUE(PL_compcv)) {
-                       if (ckWARN(WARN_CLOSURE) && !SvFAKE(sv) && !CvUNIQUE(cv))
+                       if (ckWARN(WARN_CLOSURE) && !SvFAKE(sv) && !CvUNIQUE(cv)
+                           && !(SvFLAGS(sv) & SVpad_OUR))
+                       {
                            Perl_warner(aTHX_ WARN_CLOSURE,
                                "Variable \"%s\" will not stay shared", name);
+                       }
                    }
                }
                av_store(PL_comppad, newoff, SvREFCNT_inc(oldsv));
@@ -5995,6 +5998,7 @@ Perl_ck_shift(pTHX_ OP *o)
 OP *
 Perl_ck_sort(pTHX_ OP *o)
 {
+    OP *firstkid;
     o->op_private = 0;
 #ifdef USE_LOCALE
     if (PL_hints & HINT_LOCALE)
@@ -6003,10 +6007,10 @@ Perl_ck_sort(pTHX_ OP *o)
 
     if (o->op_type == OP_SORT && o->op_flags & OPf_STACKED)
        simplify_sort(o);
-    if (o->op_flags & OPf_STACKED) {                /* may have been cleared */
-       OP *kid = cLISTOPo->op_first->op_sibling;       /* get past pushmark */
+    firstkid = cLISTOPo->op_first->op_sibling;         /* get past pushmark */
+    if (o->op_flags & OPf_STACKED) {                   /* may have been cleared */
        OP *k;
-       kid = kUNOP->op_first;                          /* get past null */
+       OP *kid = cUNOPx(firstkid)->op_first;           /* get past null */
 
        if (kid->op_type == OP_SCOPE || kid->op_type == OP_LEAVE) {
            linklist(kid);
@@ -6036,17 +6040,26 @@ Perl_ck_sort(pTHX_ OP *o)
            }
            peep(k);
 
-           kid = cLISTOPo->op_first->op_sibling;       /* get past pushmark */
-           if (o->op_type == OP_SORT)
+           kid = firstkid;
+           if (o->op_type == OP_SORT) {
+               /* provide scalar context for comparison function/block */
+               kid = scalar(kid);
                kid->op_next = kid;
+           }
            else
                kid->op_next = k;
            o->op_flags |= OPf_SPECIAL;
        }
        else if (kid->op_type == OP_RV2SV || kid->op_type == OP_PADSV)
-           null(cLISTOPo->op_first->op_sibling);
+           null(firstkid);
+
+       firstkid = firstkid->op_sibling;
     }
 
+    /* provide list context for arguments */
+    if (o->op_type == OP_SORT)
+       list(firstkid);
+
     return o;
 }
 
@@ -6252,7 +6265,9 @@ Perl_ck_subr(pTHX_ OP *o)
                proto++;
                arg++;
                if (o2->op_type != OP_REFGEN && o2->op_type != OP_UNDEF)
-                   bad_type(arg, "block", gv_ename(namegv), o2);
+                   bad_type(arg,
+                       arg == 1 ? "block or sub {}" : "sub {}",
+                       gv_ename(namegv), o2);
                break;
            case '*':
                /* '*' allows any scalar type, including bareword */
@@ -6300,8 +6315,8 @@ Perl_ck_subr(pTHX_ OP *o)
                        bad_type(arg, "symbol", gv_ename(namegv), o2);
                    goto wrapref;
                case '&':
-                   if (o2->op_type != OP_RV2CV)
-                       bad_type(arg, "sub", gv_ename(namegv), o2);
+                   if (o2->op_type != OP_ENTERSUB)
+                       bad_type(arg, "subroutine entry", gv_ename(namegv), o2);
                    goto wrapref;
                case '$':
                    if (o2->op_type != OP_RV2SV
@@ -6418,9 +6433,18 @@ Perl_peep(pTHX_ register OP *o)
             * for reference counts, sv_upgrade() etc. */
            if (cSVOP->op_sv) {
                PADOFFSET ix = pad_alloc(OP_CONST, SVs_PADTMP);
-               SvREFCNT_dec(PL_curpad[ix]);
-               SvPADTMP_on(cSVOPo->op_sv);
-               PL_curpad[ix] = cSVOPo->op_sv;
+               if (SvPADTMP(cSVOPo->op_sv)) {
+                   /* If op_sv is already a PADTMP then it is being used by
+                    * another pad, so make a copy. */
+                   sv_setsv(PL_curpad[ix],cSVOPo->op_sv);
+                   SvREADONLY_on(PL_curpad[ix]);
+                   SvREFCNT_dec(cSVOPo->op_sv);
+               }
+               else {
+                   SvREFCNT_dec(PL_curpad[ix]);
+                   SvPADTMP_on(cSVOPo->op_sv);
+                   PL_curpad[ix] = cSVOPo->op_sv;
+               }
                cSVOPo->op_sv = Nullsv;
                o->op_targ = ix;
            }