alphabetize perldiag.pod
[p5sagit/p5-mst-13.2.git] / op.c
diff --git a/op.c b/op.c
index a89d29d..be05875 100644 (file)
--- a/op.c
+++ b/op.c
@@ -1,6 +1,7 @@
 /*    op.c
  *
- *    Copyright (c) 1991-2002, Larry Wall
+ *    Copyright (C) 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999,
+ *    2000, 2001, 2002, 2003, by Larry Wall and others
  *
  *    You may distribute under the terms of either the GNU General Public
  *    License or the Artistic License, as specified in the README file.
@@ -299,6 +300,18 @@ Perl_op_clear(pTHX_ OP *o)
     case OP_CONST:
        SvREFCNT_dec(cSVOPo->op_sv);
        cSVOPo->op_sv = Nullsv;
+#ifdef USE_ITHREADS
+       /** Bug #15654
+         Even if op_clear does a pad_free for the target of the op,
+         pad_free doesn't actually remove the sv that exists in the bad
+         instead it lives on. This results in that it could be reused as 
+         a target later on when the pad was reallocated.
+       **/
+        if(o->op_targ) {
+          pad_swipe(o->op_targ,1);
+          o->op_targ = 0;
+        }
+#endif
        break;
     case OP_GOTO:
     case OP_NEXT:
@@ -1784,7 +1797,7 @@ Perl_newPROG(pTHX_ OP *o)
        CALL_PEEP(PL_eval_start);
     }
     else {
-       if (!o)
+       if (o->op_type == OP_STUB)
            return;
        PL_main_root = scope(sawparens(scalarvoid(o)));
        PL_curcop = &PL_compiling;
@@ -2630,7 +2643,7 @@ Perl_pmruntime(pTHX_ OP *o, OP *expr, OP *repl)
                    if (curop->op_type == OP_GV) {
                        GV *gv = cGVOPx_gv(curop);
                        repl_has_vars = 1;
-                       if (strchr("&`'123456789+-", *GvENAME(gv)))
+                       if (strchr("&`'123456789+-\016\022", *GvENAME(gv)))
                            break;
                    }
                    else if (curop->op_type == OP_RV2CV)
@@ -2777,13 +2790,13 @@ Perl_package(pTHX_ OP *o)
 }
 
 void
-Perl_utilize(pTHX_ int aver, I32 floor, OP *version, OP *id, OP *arg)
+Perl_utilize(pTHX_ int aver, I32 floor, OP *version, OP *idop, OP *arg)
 {
     OP *pack;
     OP *imop;
     OP *veop;
 
-    if (id->op_type != OP_CONST)
+    if (idop->op_type != OP_CONST)
        Perl_croak(aTHX_ "Module name must be constant");
 
     veop = Nullop;
@@ -2801,8 +2814,8 @@ Perl_utilize(pTHX_ int aver, I32 floor, OP *version, OP *id, OP *arg)
            if (version->op_type != OP_CONST || !SvNIOKp(vesv))
                Perl_croak(aTHX_ "Version number must be constant number");
 
-           /* Make copy of id so we don't free it twice */
-           pack = newSVOP(OP_CONST, 0, newSVsv(((SVOP*)id)->op_sv));
+           /* Make copy of idop so we don't free it twice */
+           pack = newSVOP(OP_CONST, 0, newSVsv(((SVOP*)idop)->op_sv));
 
            /* Fake up a method call to VERSION */
            meth = newSVpvn("VERSION",7);
@@ -2819,14 +2832,14 @@ Perl_utilize(pTHX_ int aver, I32 floor, OP *version, OP *id, OP *arg)
     /* Fake up an import/unimport */
     if (arg && arg->op_type == OP_STUB)
        imop = arg;             /* no import on explicit () */
-    else if (SvNIOKp(((SVOP*)id)->op_sv)) {
+    else if (SvNIOKp(((SVOP*)idop)->op_sv)) {
        imop = Nullop;          /* use 5.0; */
     }
     else {
        SV *meth;
 
-       /* Make copy of id so we don't free it twice */
-       pack = newSVOP(OP_CONST, 0, newSVsv(((SVOP*)id)->op_sv));
+       /* Make copy of idop so we don't free it twice */
+       pack = newSVOP(OP_CONST, 0, newSVsv(((SVOP*)idop)->op_sv));
 
        /* Fake up a method call to import/unimport */
        meth = aver ? newSVpvn("import",6) : newSVpvn("unimport", 8);
@@ -2846,7 +2859,7 @@ Perl_utilize(pTHX_ int aver, I32 floor, OP *version, OP *id, OP *arg)
        Nullop,
        append_elem(OP_LINESEQ,
            append_elem(OP_LINESEQ,
-               newSTATEOP(0, Nullch, newUNOP(OP_REQUIRE, 0, id)),
+               newSTATEOP(0, Nullch, newUNOP(OP_REQUIRE, 0, idop)),
                newSTATEOP(0, Nullch, veop)),
            newSTATEOP(0, Nullch, imop) ));
 
@@ -4179,7 +4192,7 @@ Perl_newATTRSUB(pTHX_ I32 floor, OP *o, OP *proto, OP *attrs, OP *block)
        if (*s != 'B' && *s != 'E' && *s != 'C' && *s != 'I')
            goto done;
 
-       if (strEQ(s, "BEGIN")) {
+       if (strEQ(s, "BEGIN") && !PL_error_count) {
            I32 oldscope = PL_scopestack_ix;
            ENTER;
            SAVECOPFILE(&PL_compiling);
@@ -4261,7 +4274,7 @@ Perl_newCONSTSUB(pTHX_ HV *stash, char *name, SV *sv)
        CopSTASH_set(PL_curcop,stash);
     }
 
-    cv = newXS(name, const_sv_xsub, __FILE__);
+    cv = newXS(name, const_sv_xsub, savepv(CopFILE(PL_curcop)));
     CvXSUBANY(cv).any_ptr = sv;
     CvCONST_on(cv);
     sv_setpv((SV*)cv, "");  /* prototype is "" */
@@ -4706,10 +4719,9 @@ Perl_ck_eval(pTHX_ OP *o)
            o->op_flags &= ~OPf_KIDS;
            op_null(o);
        }
-       else if (kid->op_type == OP_LINESEQ) {
+       else if (kid->op_type == OP_LINESEQ || kid->op_type == OP_STUB) {
            LOGOP *enter;
 
-           kid->op_next = o->op_next;
            cUNOPo->op_first = 0;
            op_free(o);
 
@@ -4921,6 +4933,11 @@ Perl_ck_ftst(pTHX_ OP *o)
            op_free(o);
            o = newop;
        }
+       else {
+         if ((PL_hints & HINT_FILETEST_ACCESS) &&
+             OP_IS_FILETEST_ACCESS(o))
+           o->op_private |= OPpFT_ACCESS;
+       }
     }
     else {
        op_free(o);
@@ -5097,9 +5114,51 @@ Perl_ck_fun(pTHX_ OP *o)
                            else if (kid->op_type == OP_AELEM
                                     || kid->op_type == OP_HELEM)
                            {
-                               name = "__ANONIO__";
-                               len = 10;
-                               mod(kid,type);
+                                OP *op;
+
+                                name = 0;
+                                if ((op = ((BINOP*)kid)->op_first)) {
+                                     SV *tmpstr = Nullsv;
+                                     char *a =
+                                          kid->op_type == OP_AELEM ?
+                                          "[]" : "{}";
+                                     if (((op->op_type == OP_RV2AV) ||
+                                          (op->op_type == OP_RV2HV)) &&
+                                         (op = ((UNOP*)op)->op_first) &&
+                                         (op->op_type == OP_GV)) {
+                                          /* packagevar $a[] or $h{} */
+                                          GV *gv = cGVOPx_gv(op);
+                                          if (gv)
+                                               tmpstr =
+                                                    Perl_newSVpvf(aTHX_
+                                                                  "%s%c...%c",
+                                                                  GvNAME(gv),
+                                                                  a[0], a[1]);
+                                     }
+                                     else if (op->op_type == OP_PADAV
+                                              || op->op_type == OP_PADHV) {
+                                          /* lexicalvar $a[] or $h{} */
+                                          char *padname =
+                                               PAD_COMPNAME_PV(op->op_targ);
+                                          if (padname)
+                                               tmpstr =
+                                                    Perl_newSVpvf(aTHX_
+                                                                  "%s%c...%c",
+                                                                  padname + 1,
+                                                                  a[0], a[1]);
+                                          
+                                     }
+                                     if (tmpstr) {
+                                          name = savepv(SvPVX(tmpstr));
+                                          len = strlen(name);
+                                          sv_2mortal(tmpstr);
+                                     }
+                                }
+                                if (!name) {
+                                     name = "__ANONIO__";
+                                     len = 10;
+                                }
+                                mod(kid, type);
                            }
                            if (name) {
                                SV *namesv;
@@ -5446,6 +5505,25 @@ Perl_ck_open(pTHX_ OP *o)
     }
     if (o->op_type == OP_BACKTICK)
        return o;
+    {
+        /* In case of three-arg dup open remove strictness
+         * from the last arg if it is a bareword. */
+        OP *first = cLISTOPx(o)->op_first; /* The pushmark. */
+        OP *last  = cLISTOPx(o)->op_last;  /* The bareword. */
+        OP *oa;
+        char *mode;
+
+        if ((last->op_type == OP_CONST) &&             /* The bareword. */
+            (last->op_private & OPpCONST_BARE) &&
+            (last->op_private & OPpCONST_STRICT) &&
+            (oa = first->op_sibling) &&                /* The fh. */
+            (oa = oa->op_sibling) &&                   /* The mode. */
+            SvPOK(((SVOP*)oa)->op_sv) &&
+            (mode = SvPVX(((SVOP*)oa)->op_sv)) &&
+            mode[0] == '>' && mode[1] == '&' &&        /* A dup open. */
+            (last == oa->op_sibling))                  /* The bareword. */
+             last->op_private &= ~OPpCONST_STRICT;
+    }
     return ck_fun(o);
 }
 
@@ -5802,7 +5880,13 @@ Perl_ck_subr(pTHX_ OP *o)
                        if (PERLDB_ASSERTION && PL_curstash != PL_debstash)
                            o->op_private |= OPpENTERSUB_DB;
                    }
-                   else delete=1;
+                   else {
+                       delete=1;
+                       if (ckWARN(WARN_ASSERTIONS) && !(PL_hints & HINT_ASSERTIONSSEEN)) {
+                           Perl_warner(aTHX_ packWARN(WARN_ASSERTIONS),
+                                       "Impossible to activate assertion call");
+                       }
+                   }
                }
            }
        }