X-Git-Url: http://git.shadowcat.co.uk/gitweb/gitweb.cgi?a=blobdiff_plain;f=mg.c;h=19479db62bc968f2bf02e7e879f805b9817fe379;hb=98f185c877b1e36d5243b8e4023f75e5ff587c20;hp=75c14d0f59e7458d754811a8d591414d8130cf65;hpb=af7f9c15b19acb8a3505931059b5c163366afc7d;p=p5sagit%2Fp5-mst-13.2.git

diff --git a/mg.c b/mg.c
index 75c14d0..19479db 100644
--- a/mg.c
+++ b/mg.c
@@ -1,6 +1,6 @@
 /*    mg.c
  *
- *    Copyright (c) 1991-1997, Larry Wall
+ *    Copyright (c) 1991-1999, Larry Wall
  *
  *    You may distribute under the terms of either the GNU General Public
  *    License or the Artistic License, as specified in the README file.
@@ -13,6 +13,7 @@
  */
 
 #include "EXTERN.h"
+#define PERL_IN_MG_C
 #include "perl.h"
 
 /* XXX If this causes problems, set i_unistd=undef in the hint file.  */
@@ -26,59 +27,47 @@
 #  endif
 #endif
 
+#ifdef PERL_OBJECT
+#  define VTBL            this->*vtbl
+#else
+#  define VTBL			*vtbl
+#endif
+
+static void restore_magic(pTHXo_ void *p);
+static void unwind_handler_stack(pTHXo_ void *p);
+
 /*
  * Use the "DESTRUCTOR" scope cleanup to reinstate magic.
  */
 
-#ifdef PERL_OBJECT
-
-#define VTBL            this->*vtbl
-
-#else
 struct magic_state {
     SV* mgs_sv;
     U32 mgs_flags;
+    I32 mgs_ss_ix;
 };
-typedef struct magic_state MGS;
-
-static void restore_magic _((void *p));
-#define VTBL			*vtbl
-
-#endif
+/* MGS is typedef'ed to struct magic_state in perl.h */
 
 STATIC void
-save_magic(MGS *mgs, SV *sv)
+S_save_magic(pTHX_ I32 mgs_ix, SV *sv)
 {
+    dTHR;
+    MGS* mgs;
     assert(SvMAGICAL(sv));
 
+    SAVEDESTRUCTOR(restore_magic, (void*)mgs_ix);
+
+    mgs = SSPTR(mgs_ix, MGS*);
     mgs->mgs_sv = sv;
     mgs->mgs_flags = SvMAGICAL(sv) | SvREADONLY(sv);
-    SAVEDESTRUCTOR(restore_magic, mgs);
+    mgs->mgs_ss_ix = PL_savestack_ix;   /* points after the saved destructor */
 
     SvMAGICAL_off(sv);
     SvREADONLY_off(sv);
     SvFLAGS(sv) |= (SvFLAGS(sv) & (SVp_IOK|SVp_NOK|SVp_POK)) >> PRIVSHIFT;
 }
 
-STATIC void
-restore_magic(void *p)
-{
-    MGS* mgs = (MGS*)p;
-    SV* sv = mgs->mgs_sv;
-
-    if (SvTYPE(sv) >= SVt_PVMG && SvMAGIC(sv))
-    {
-	if (mgs->mgs_flags)
-	    SvFLAGS(sv) |= mgs->mgs_flags;
-	else
-	    mg_magical(sv);
-	if (SvGMAGICAL(sv))
-	    SvFLAGS(sv) &= ~(SVf_IOK|SVf_NOK|SVf_POK);
-    }
-}
-
 void
-mg_magical(SV *sv)
+Perl_mg_magical(pTHX_ SV *sv)
 {
     MAGIC* mg;
     for (mg = SvMAGIC(sv); mg; mg = mg->mg_moremagic) {
@@ -95,25 +84,26 @@ mg_magical(SV *sv)
 }
 
 int
-mg_get(SV *sv)
+Perl_mg_get(pTHX_ SV *sv)
 {
-    MGS mgs;
+    dTHR;
+    I32 mgs_ix;
     MAGIC* mg;
     MAGIC** mgp;
     int mgp_valid = 0;
 
-    ENTER;
-    save_magic(&mgs, sv);
+    mgs_ix = SSNEW(sizeof(MGS));
+    save_magic(mgs_ix, sv);
 
     mgp = &SvMAGIC(sv);
     while ((mg = *mgp) != 0) {
 	MGVTBL* vtbl = mg->mg_virtual;
 	if (!(mg->mg_flags & MGf_GSKIP) && vtbl && (vtbl->svt_get != NULL)) {
-	    (VTBL->svt_get)(sv, mg);
+	    (VTBL->svt_get)(aTHX_ sv, mg);
 	    /* Ignore this magic if it's been deleted */
 	    if ((mg == (mgp_valid ? *mgp : SvMAGIC(sv))) &&
 		  (mg->mg_flags & MGf_GSKIP))
-		mgs.mgs_flags = 0;
+		(SSPTR(mgs_ix, MGS*))->mgs_flags = 0;
 	}
 	/* Advance to next magic (complicated by possible deletion) */
 	if (mg == (mgp_valid ? *mgp : SvMAGIC(sv))) {
@@ -124,37 +114,38 @@ mg_get(SV *sv)
 	    mgp = &SvMAGIC(sv);	/* Re-establish pointer after sv_upgrade */
     }
 
-    LEAVE;
+    restore_magic(aTHXo_ (void*)mgs_ix);
     return 0;
 }
 
 int
-mg_set(SV *sv)
+Perl_mg_set(pTHX_ SV *sv)
 {
-    MGS mgs;
+    dTHR;
+    I32 mgs_ix;
     MAGIC* mg;
     MAGIC* nextmg;
 
-    ENTER;
-    save_magic(&mgs, sv);
+    mgs_ix = SSNEW(sizeof(MGS));
+    save_magic(mgs_ix, sv);
 
     for (mg = SvMAGIC(sv); mg; mg = nextmg) {
 	MGVTBL* vtbl = mg->mg_virtual;
 	nextmg = mg->mg_moremagic;	/* it may delete itself */
 	if (mg->mg_flags & MGf_GSKIP) {
 	    mg->mg_flags &= ~MGf_GSKIP;	/* setting requires another read */
-	    mgs.mgs_flags = 0;
+	    (SSPTR(mgs_ix, MGS*))->mgs_flags = 0;
 	}
 	if (vtbl && (vtbl->svt_set != NULL))
-	    (VTBL->svt_set)(sv, mg);
+	    (VTBL->svt_set)(aTHX_ sv, mg);
     }
 
-    LEAVE;
+    restore_magic(aTHXo_ (void*)mgs_ix);
     return 0;
 }
 
 U32
-mg_length(SV *sv)
+Perl_mg_length(pTHX_ SV *sv)
 {
     MAGIC* mg;
     char *junk;
@@ -163,13 +154,13 @@ mg_length(SV *sv)
     for (mg = SvMAGIC(sv); mg; mg = mg->mg_moremagic) {
 	MGVTBL* vtbl = mg->mg_virtual;
 	if (vtbl && (vtbl->svt_len != NULL)) {
-	    MGS mgs;
+            I32 mgs_ix;
 
-	    ENTER;
-	    save_magic(&mgs, sv);
+	    mgs_ix = SSNEW(sizeof(MGS));
+	    save_magic(mgs_ix, sv);
 	    /* omit MGf_GSKIP -- not changed here */
-	    len = (VTBL->svt_len)(sv, mg);
-	    LEAVE;
+	    len = (VTBL->svt_len)(aTHX_ sv, mg);
+	    restore_magic(aTHXo_ (void*)mgs_ix);
 	    return len;
 	}
     }
@@ -179,7 +170,7 @@ mg_length(SV *sv)
 }
 
 I32
-mg_size(SV *sv)
+Perl_mg_size(pTHX_ SV *sv)
 {
     MAGIC* mg;
     I32 len;
@@ -187,11 +178,13 @@ mg_size(SV *sv)
     for (mg = SvMAGIC(sv); mg; mg = mg->mg_moremagic) {
 	MGVTBL* vtbl = mg->mg_virtual;
 	if (vtbl && (vtbl->svt_len != NULL)) {
-	    MGS mgs;
-	    ENTER;
+            I32 mgs_ix;
+
+	    mgs_ix = SSNEW(sizeof(MGS));
+	    save_magic(mgs_ix, sv);
 	    /* omit MGf_GSKIP -- not changed here */
-	    len = (VTBL->svt_len)(sv, mg);
-	    LEAVE;
+	    len = (VTBL->svt_len)(aTHX_ sv, mg);
+	    restore_magic(aTHXo_ (void*)mgs_ix);
 	    return len;
 	}
     }
@@ -203,35 +196,35 @@ mg_size(SV *sv)
 	case SVt_PVHV:
 	    /* FIXME */
 	default:
-	    croak("Size magic not implemented");
+	    Perl_croak(aTHX_ "Size magic not implemented");
 	    break;
     }
     return 0;
 }
 
 int
-mg_clear(SV *sv)
+Perl_mg_clear(pTHX_ SV *sv)
 {
-    MGS mgs;
+    I32 mgs_ix;
     MAGIC* mg;
 
-    ENTER;
-    save_magic(&mgs, sv);
+    mgs_ix = SSNEW(sizeof(MGS));
+    save_magic(mgs_ix, sv);
 
     for (mg = SvMAGIC(sv); mg; mg = mg->mg_moremagic) {
 	MGVTBL* vtbl = mg->mg_virtual;
 	/* omit GSKIP -- never set here */
 	
 	if (vtbl && (vtbl->svt_clear != NULL))
-	    (VTBL->svt_clear)(sv, mg);
+	    (VTBL->svt_clear)(aTHX_ sv, mg);
     }
 
-    LEAVE;
+    restore_magic(aTHXo_ (void*)mgs_ix);
     return 0;
 }
 
 MAGIC*
-mg_find(SV *sv, int type)
+Perl_mg_find(pTHX_ SV *sv, int type)
 {
     MAGIC* mg;
     for (mg = SvMAGIC(sv); mg; mg = mg->mg_moremagic) {
@@ -242,13 +235,15 @@ mg_find(SV *sv, int type)
 }
 
 int
-mg_copy(SV *sv, SV *nsv, char *key, I32 klen)
+Perl_mg_copy(pTHX_ SV *sv, SV *nsv, const char *key, I32 klen)
 {
     int count = 0;
     MAGIC* mg;
     for (mg = SvMAGIC(sv); mg; mg = mg->mg_moremagic) {
 	if (isUPPER(mg->mg_type)) {
-	    sv_magic(nsv, mg->mg_obj, toLOWER(mg->mg_type), key, klen);
+	    sv_magic(nsv,
+		     mg->mg_type == 'P' ? SvTIED_obj(sv, mg) : mg->mg_obj,
+		     toLOWER(mg->mg_type), key, klen);
 	    count++;
 	}
     }
@@ -256,7 +251,7 @@ mg_copy(SV *sv, SV *nsv, char *key, I32 klen)
 }
 
 int
-mg_free(SV *sv)
+Perl_mg_free(pTHX_ SV *sv)
 {
     MAGIC* mg;
     MAGIC* moremagic;
@@ -264,7 +259,7 @@ mg_free(SV *sv)
 	MGVTBL* vtbl = mg->mg_virtual;
 	moremagic = mg->mg_moremagic;
 	if (vtbl && (vtbl->svt_free != NULL))
-	    (VTBL->svt_free)(sv, mg);
+	    (VTBL->svt_free)(aTHX_ sv, mg);
 	if (mg->mg_ptr && mg->mg_type != 'g')
 	    if (mg->mg_len >= 0)
 		Safefree(mg->mg_ptr);
@@ -283,7 +278,54 @@ mg_free(SV *sv)
 #endif
 
 U32
-magic_len(SV *sv, MAGIC *mg)
+Perl_magic_regdata_cnt(pTHX_ SV *sv, MAGIC *mg)
+{
+    dTHR;
+    register char *s;
+    register I32 i;
+    register REGEXP *rx;
+    char *t;
+
+    if (PL_curpm && (rx = PL_curpm->op_pmregexp)) {
+	if (mg->mg_obj)		/* @+ */
+	    return rx->nparens;
+	else			/* @- */
+	    return rx->lastparen;
+    }
+    
+    return (U32)-1;
+}
+
+int
+Perl_magic_regdatum_get(pTHX_ SV *sv, MAGIC *mg)
+{
+    dTHR;
+    register I32 paren;
+    register I32 s;
+    register I32 i;
+    register REGEXP *rx;
+    I32 t;
+
+    if (PL_curpm && (rx = PL_curpm->op_pmregexp)) {
+	paren = mg->mg_len;
+	if (paren < 0)
+	    return 0;
+	if (paren <= rx->nparens &&
+	    (s = rx->startp[paren]) != -1 &&
+	    (t = rx->endp[paren]) != -1)
+	    {
+		if (mg->mg_obj)		/* @+ */
+		    i = t;
+		else			/* @- */
+		    i = s;
+		sv_setiv(sv,i);
+	    }
+    }
+    return 0;
+}
+
+U32
+Perl_magic_len(pTHX_ SV *sv, MAGIC *mg)
 {
     dTHR;
     register I32 paren;
@@ -296,13 +338,15 @@ magic_len(SV *sv, MAGIC *mg)
     case '1': case '2': case '3': case '4':
     case '5': case '6': case '7': case '8': case '9': case '&':
 	if (PL_curpm && (rx = PL_curpm->op_pmregexp)) {
+	    I32 s1, t1;
+
 	    paren = atoi(mg->mg_ptr);
 	  getparen:
 	    if (paren <= rx->nparens &&
-		(s = rx->startp[paren]) &&
-		(t = rx->endp[paren]))
+		(s1 = rx->startp[paren]) != -1 &&
+		(t1 = rx->endp[paren]) != -1)
 	    {
-		i = t - s;
+		i = t1 - s1;
 		if (i >= 0)
 		    return i;
 	    }
@@ -317,8 +361,8 @@ magic_len(SV *sv, MAGIC *mg)
 	return 0;
     case '`':
 	if (PL_curpm && (rx = PL_curpm->op_pmregexp)) {
-	    if ((s = rx->subbeg) && rx->startp[0]) {
-		i = rx->startp[0] - s;
+	    if (rx->startp[0] != -1) {
+		i = rx->startp[0];
 		if (i >= 0)
 		    return i;
 	    }
@@ -326,8 +370,8 @@ magic_len(SV *sv, MAGIC *mg)
 	return 0;
     case '\'':
 	if (PL_curpm && (rx = PL_curpm->op_pmregexp)) {
-	    if (rx->subend && (s = rx->endp[0])) {
-		i = rx->subend - s;
+	    if (rx->endp[0] != -1) {
+		i = rx->sublen - rx->endp[0];
 		if (i >= 0)
 		    return i;
 	    }
@@ -339,15 +383,17 @@ magic_len(SV *sv, MAGIC *mg)
 	return (STRLEN)PL_orslen;
     }
     magic_get(sv,mg);
-    if (!SvPOK(sv) && SvNIOK(sv))
-	sv_2pv(sv, &PL_na);
+    if (!SvPOK(sv) && SvNIOK(sv)) {
+	STRLEN n_a;
+	sv_2pv(sv, &n_a);
+    }
     if (SvPOK(sv))
 	return SvCUR(sv);
     return 0;
 }
 
 int
-magic_get(SV *sv, MAGIC *mg)
+Perl_magic_get(pTHX_ SV *sv, MAGIC *mg)
 {
     dTHR;
     register I32 paren;
@@ -360,6 +406,23 @@ magic_get(SV *sv, MAGIC *mg)
     case '\001':		/* ^A */
 	sv_setsv(sv, PL_bodytarget);
 	break;
+    case '\002':		/* ^B */
+	if (PL_curcop->cop_warnings == WARN_NONE ||
+	    PL_curcop->cop_warnings == WARN_STD)
+	{
+	    sv_setpvn(sv, WARN_NONEstring, WARNsize) ;
+        }
+        else if (PL_curcop->cop_warnings == WARN_ALL) {
+	    sv_setpvn(sv, WARN_ALLstring, WARNsize) ;
+	}    
+        else {
+	    sv_setsv(sv, PL_curcop->cop_warnings);
+	}    
+	break;
+    case '\003':		/* ^C */
+	sv_setiv(sv, (IV)PL_minus_c);
+	break;
+
     case '\004':		/* ^D */
 	sv_setiv(sv, (IV)(PL_debug & 32767));
 	break;
@@ -370,7 +433,7 @@ magic_get(SV *sv, MAGIC *mg)
 #	    include <starlet.h>
 	    char msg[255];
 	    $DESCRIPTOR(msgdsc,msg);
-	    sv_setnv(sv,(double) vaxc$errno);
+	    sv_setnv(sv,(NV) vaxc$errno);
 	    if (sys$getmsg(vaxc$errno,&msgdsc.dsc$w_length,&msgdsc,0,0) & 1)
 		sv_setpvn(sv,msgdsc.dsc$a_pointer,msgdsc.dsc$w_length);
 	    else
@@ -379,37 +442,32 @@ magic_get(SV *sv, MAGIC *mg)
 #else
 #ifdef OS2
 	if (!(_emx_env & 0x200)) {	/* Under DOS */
-	    sv_setnv(sv, (double)errno);
+	    sv_setnv(sv, (NV)errno);
 	    sv_setpv(sv, errno ? Strerror(errno) : "");
 	} else {
-	    if (errno != errno_isOS2)
-		Perl_rc = _syserrno();
-	    sv_setnv(sv, (double)Perl_rc);
+	    if (errno != errno_isOS2) {
+		int tmp = _syserrno();
+		if (tmp)	/* 2nd call to _syserrno() makes it 0 */
+		    Perl_rc = tmp;
+	    }
+	    sv_setnv(sv, (NV)Perl_rc);
 	    sv_setpv(sv, os2error(Perl_rc));
 	}
 #else
 #ifdef WIN32
 	{
 	    DWORD dwErr = GetLastError();
-	    sv_setnv(sv, (double)dwErr);
+	    sv_setnv(sv, (NV)dwErr);
 	    if (dwErr)
 	    {
-#ifdef PERL_OBJECT
-		char *sMsg;
-		DWORD dwLen;
-		PerlProc_GetSysMsg(sMsg, dwLen, dwErr);
-		sv_setpvn(sv, sMsg, dwLen);
-		PerlProc_FreeBuf(sMsg);
-#else
-		win32_str_os_error(sv, dwErr);
-#endif
+		PerlProc_GetOSError(sv, dwErr);
 	    }
 	    else
 		sv_setpv(sv, "");
 	    SetLastError(dwErr);
 	}
 #else
-	sv_setnv(sv, (double)errno);
+	sv_setnv(sv, (NV)errno);
 	sv_setpv(sv, errno ? Strerror(errno) : "");
 #endif
 #endif
@@ -422,7 +480,7 @@ magic_get(SV *sv, MAGIC *mg)
     case '\010':		/* ^H */
 	sv_setiv(sv, (IV)PL_hints);
 	break;
-    case '\t':			/* ^I */
+    case '\011':		/* ^I */ /* NOT \t in EBCDIC */
 	if (PL_inplace)
 	    sv_setpv(sv, PL_inplace);
 	else
@@ -453,11 +511,13 @@ magic_get(SV *sv, MAGIC *mg)
 #endif
 	break;
     case '\027':		/* ^W */
-	sv_setiv(sv, (IV)PL_dowarn);
+	sv_setiv(sv, (IV)((PL_dowarn & G_WARN_ON) ? TRUE : FALSE));
 	break;
     case '1': case '2': case '3': case '4':
     case '5': case '6': case '7': case '8': case '9': case '&':
 	if (PL_curpm && (rx = PL_curpm->op_pmregexp)) {
+	    I32 s1, t1;
+
 	    /*
 	     * Pre-threads, this was paren = atoi(GvENAME((GV*)mg->mg_obj));
 	     * XXX Does the new way break anything?
@@ -465,10 +525,11 @@ magic_get(SV *sv, MAGIC *mg)
 	    paren = atoi(mg->mg_ptr);
 	  getparen:
 	    if (paren <= rx->nparens &&
-		(s = rx->startp[paren]) &&
-		(t = rx->endp[paren]))
+		(s1 = rx->startp[paren]) != -1 &&
+		(t1 = rx->endp[paren]) != -1)
 	    {
-		i = t - s;
+		i = t1 - s1;
+		s = rx->subbeg + s1;
 	      getrx:
 		if (i >= 0) {
 		    bool was_tainted;
@@ -476,7 +537,7 @@ magic_get(SV *sv, MAGIC *mg)
 			was_tainted = PL_tainted;
 			PL_tainted = FALSE;
 		    }
-		    sv_setpvn(sv,s,i);
+		    sv_setpvn(sv, s, i);
 		    if (PL_tainting)
 			PL_tainted = (was_tainted || RX_MATCH_TAINTED(rx));
 		    break;
@@ -495,8 +556,8 @@ magic_get(SV *sv, MAGIC *mg)
 	break;
     case '`':
 	if (PL_curpm && (rx = PL_curpm->op_pmregexp)) {
-	    if ((s = rx->subbeg) && rx->startp[0]) {
-		i = rx->startp[0] - s;
+	    if ((s = rx->subbeg) && rx->startp[0] != -1) {
+		i = rx->startp[0];
 		goto getrx;
 	    }
 	}
@@ -504,8 +565,9 @@ magic_get(SV *sv, MAGIC *mg)
 	break;
     case '\'':
 	if (PL_curpm && (rx = PL_curpm->op_pmregexp)) {
-	    if (rx->subend && (s = rx->endp[0])) {
-		i = rx->subend - s;
+	    if (rx->subbeg && rx->endp[0] != -1) {
+		s = rx->subbeg + rx->endp[0];
+		i = rx->sublen - rx->endp[0];
 		goto getrx;
 	    }
 	}
@@ -520,7 +582,6 @@ magic_get(SV *sv, MAGIC *mg)
 	break;
     case '?':
 	{
-	    dTHR;
 	    sv_setiv(sv, (IV)STATUS_CURRENT);
 #ifdef COMPLEX_STATUS
 	    LvTARGOFF(sv) = PL_statusvalue;
@@ -575,12 +636,12 @@ magic_get(SV *sv, MAGIC *mg)
 	break;
     case '!':
 #ifdef VMS
-	sv_setnv(sv, (double)((errno == EVMSERR) ? vaxc$errno : errno));
+	sv_setnv(sv, (NV)((errno == EVMSERR) ? vaxc$errno : errno));
 	sv_setpv(sv, errno ? Strerror(errno) : "");
 #else
 	{
 	int saveerrno = errno;
-	sv_setnv(sv, (double)errno);
+	sv_setnv(sv, (NV)errno);
 #ifdef OS2
 	if (errno == errno_isOS2) sv_setpv(sv, os2error(Perl_rc));
 	else
@@ -599,18 +660,18 @@ magic_get(SV *sv, MAGIC *mg)
 	break;
     case '(':
 	sv_setiv(sv, (IV)PL_gid);
-	sv_setpvf(sv, "%Vd", (IV)PL_gid);
+	Perl_sv_setpvf(aTHX_ sv, "%Vd", (IV)PL_gid);
 	goto add_groups;
     case ')':
 	sv_setiv(sv, (IV)PL_egid);
-	sv_setpvf(sv, "%Vd", (IV)PL_egid);
+	Perl_sv_setpvf(aTHX_ sv, "%Vd", (IV)PL_egid);
       add_groups:
 #ifdef HAS_GETGROUPS
 	{
 	    Groups_t gary[NGROUPS];
 	    i = getgroups(NGROUPS,gary);
 	    while (--i >= 0)
-		sv_catpvf(sv, " %Vd", (IV)gary[i]);
+		Perl_sv_catpvf(aTHX_ sv, " %Vd", (IV)gary[i]);
 	}
 #endif
 	SvIOK_on(sv);	/* what a wonderful hack! */
@@ -629,7 +690,7 @@ magic_get(SV *sv, MAGIC *mg)
 }
 
 int
-magic_getuvar(SV *sv, MAGIC *mg)
+Perl_magic_getuvar(pTHX_ SV *sv, MAGIC *mg)
 {
     struct ufuncs *uf = (struct ufuncs *)mg->mg_ptr;
 
@@ -639,7 +700,7 @@ magic_getuvar(SV *sv, MAGIC *mg)
 }
 
 int
-magic_setenv(SV *sv, MAGIC *mg)
+Perl_magic_setenv(pTHX_ SV *sv, MAGIC *mg)
 {
     register char *s;
     char *ptr;
@@ -715,27 +776,29 @@ magic_setenv(SV *sv, MAGIC *mg)
 }
 
 int
-magic_clearenv(SV *sv, MAGIC *mg)
+Perl_magic_clearenv(pTHX_ SV *sv, MAGIC *mg)
 {
-    my_setenv(MgPV(mg,PL_na),Nullch);
+    STRLEN n_a;
+    my_setenv(MgPV(mg,n_a),Nullch);
     return 0;
 }
 
 int
-magic_set_all_env(SV *sv, MAGIC *mg)
+Perl_magic_set_all_env(pTHX_ SV *sv, MAGIC *mg)
 {
 #if defined(VMS)
-    die("Can't make list assignment to %%ENV on this system");
+    Perl_die(aTHX_ "Can't make list assignment to %%ENV on this system");
 #else
     dTHR;
     if (PL_localizing) {
 	HE* entry;
+	STRLEN n_a;
 	magic_clear_all_env(sv,mg);
 	hv_iterinit((HV*)sv);
 	while (entry = hv_iternext((HV*)sv)) {
 	    I32 keylen;
 	    my_setenv(hv_iterkey(entry, &keylen),
-		      SvPV(hv_iterval((HV*)sv, entry), PL_na));
+		      SvPV(hv_iterval((HV*)sv, entry), n_a));
 	}
     }
 #endif
@@ -743,12 +806,12 @@ magic_set_all_env(SV *sv, MAGIC *mg)
 }
 
 int
-magic_clear_all_env(SV *sv, MAGIC *mg)
+Perl_magic_clear_all_env(pTHX_ SV *sv, MAGIC *mg)
 {
 #if defined(VMS)
-    die("Can't make list assignment to %%ENV on this system");
+    Perl_die(aTHX_ "Can't make list assignment to %%ENV on this system");
 #else
-#ifdef WIN32
+#  ifdef WIN32
     char *envv = GetEnvironmentStrings();
     char *cur = envv;
     STRLEN len;
@@ -758,36 +821,46 @@ magic_clear_all_env(SV *sv, MAGIC *mg)
 	    *end = '\0';
 	    my_setenv(cur,Nullch);
 	    *end = '=';
-	    cur += strlen(end+1)+1;
+	    cur = end + strlen(end+1)+2;
 	}
 	else if ((len = strlen(cur)))
 	    cur += len+1;
     }
     FreeEnvironmentStrings(envv);
-#else
+#  else
+#    ifdef CYGWIN
+    I32 i;
+    for (i = 0; environ[i]; i++)
+       Safefree(environ[i]);
+#    else
+#      ifndef PERL_USE_SAFE_PUTENV
     I32 i;
 
     if (environ == PL_origenviron)
-	New(901, environ, 1, char*);
+	environ = (char**)safesysmalloc(sizeof(char*));
     else
 	for (i = 0; environ[i]; i++)
-	    Safefree(environ[i]);
+	    safesysfree(environ[i]);
+#      endif /* PERL_USE_SAFE_PUTENV */
+#    endif /* CYGWIN */
+
     environ[0] = Nullch;
 
-#endif
-#endif
+#  endif /* WIN32 */
+#endif /* VMS */
     return 0;
 }
 
 int
-magic_getsig(SV *sv, MAGIC *mg)
+Perl_magic_getsig(pTHX_ SV *sv, MAGIC *mg)
 {
     I32 i;
+    STRLEN n_a;
     /* Are we fetching a signal entry? */
-    i = whichsig(MgPV(mg,PL_na));
+    i = whichsig(MgPV(mg,n_a));
     if (i) {
-    	if(psig_ptr[i])
-    	    sv_setsv(sv,psig_ptr[i]);
+    	if(PL_psig_ptr[i])
+    	    sv_setsv(sv,PL_psig_ptr[i]);
     	else {
     	    Sighandler_t sigstate = rsignal_state(i);
 
@@ -796,40 +869,42 @@ magic_getsig(SV *sv, MAGIC *mg)
     	    	sv_setpv(sv,"IGNORE");
     	    else
     	    	sv_setsv(sv,&PL_sv_undef);
-    	    psig_ptr[i] = SvREFCNT_inc(sv);
+    	    PL_psig_ptr[i] = SvREFCNT_inc(sv);
     	    SvTEMP_off(sv);
     	}
     }
     return 0;
 }
 int
-magic_clearsig(SV *sv, MAGIC *mg)
+Perl_magic_clearsig(pTHX_ SV *sv, MAGIC *mg)
 {
     I32 i;
+    STRLEN n_a;
     /* Are we clearing a signal entry? */
-    i = whichsig(MgPV(mg,PL_na));
+    i = whichsig(MgPV(mg,n_a));
     if (i) {
-    	if(psig_ptr[i]) {
-    	    SvREFCNT_dec(psig_ptr[i]);
-    	    psig_ptr[i]=0;
+    	if(PL_psig_ptr[i]) {
+    	    SvREFCNT_dec(PL_psig_ptr[i]);
+    	    PL_psig_ptr[i]=0;
     	}
-    	if(psig_name[i]) {
-    	    SvREFCNT_dec(psig_name[i]);
-    	    psig_name[i]=0;
+    	if(PL_psig_name[i]) {
+    	    SvREFCNT_dec(PL_psig_name[i]);
+    	    PL_psig_name[i]=0;
     	}
     }
     return 0;
 }
 
 int
-magic_setsig(SV *sv, MAGIC *mg)
+Perl_magic_setsig(pTHX_ SV *sv, MAGIC *mg)
 {
     dTHR;
     register char *s;
     I32 i;
     SV** svp;
+    STRLEN len;
 
-    s = MgPV(mg,PL_na);
+    s = MgPV(mg,len);
     if (*s == '_') {
 	if (strEQ(s,"__DIE__"))
 	    svp = &PL_diehook;
@@ -838,7 +913,7 @@ magic_setsig(SV *sv, MAGIC *mg)
 	else if (strEQ(s,"__PARSE__"))
 	    svp = &PL_parsehook;
 	else
-	    croak("No such hook: %s", s);
+	    Perl_croak(aTHX_ "No such hook: %s", s);
 	i = 0;
 	if (*svp) {
 	    SvREFCNT_dec(*svp);
@@ -848,16 +923,16 @@ magic_setsig(SV *sv, MAGIC *mg)
     else {
 	i = whichsig(s);	/* ...no, a brick */
 	if (!i) {
-	    if (PL_dowarn || strEQ(s,"ALARM"))
-		warn("No such signal: SIG%s", s);
+	    if (ckWARN(WARN_SIGNAL) || strEQ(s,"ALARM"))
+		Perl_warner(aTHX_ WARN_SIGNAL, "No such signal: SIG%s", s);
 	    return 0;
 	}
-	SvREFCNT_dec(psig_name[i]);
-	SvREFCNT_dec(psig_ptr[i]);
-	psig_ptr[i] = SvREFCNT_inc(sv);
+	SvREFCNT_dec(PL_psig_name[i]);
+	SvREFCNT_dec(PL_psig_ptr[i]);
+	PL_psig_ptr[i] = SvREFCNT_inc(sv);
 	SvTEMP_off(sv); /* Make sure it doesn't go away on us */
-	psig_name[i] = newSVpv(s, strlen(s));
-	SvREADONLY_on(psig_name[i]);
+	PL_psig_name[i] = newSVpvn(s, len);
+	SvREADONLY_on(PL_psig_name[i]);
     }
     if (SvTYPE(sv) == SVt_PVGV || SvROK(sv)) {
 	if (i)
@@ -866,7 +941,7 @@ magic_setsig(SV *sv, MAGIC *mg)
 	    *svp = SvREFCNT_inc(sv);
 	return 0;
     }
-    s = SvPV_force(sv,PL_na);
+    s = SvPV_force(sv,len);
     if (strEQ(s,"IGNORE")) {
 	if (i)
 	    (void)rsignal(i, SIG_IGN);
@@ -886,7 +961,7 @@ magic_setsig(SV *sv, MAGIC *mg)
 	 * tell whether HINT_STRICT_REFS is in force or not.
 	 */
 	if (!strchr(s,':') && !strchr(s,'\''))
-	    sv_setpv(sv, form("main::%s", s));
+	    sv_insert(sv, 0, 0, "main::", 6);
 	if (i)
 	    (void)rsignal(i, PL_sighandlerp);
 	else
@@ -896,26 +971,23 @@ magic_setsig(SV *sv, MAGIC *mg)
 }
 
 int
-magic_setisa(SV *sv, MAGIC *mg)
+Perl_magic_setisa(pTHX_ SV *sv, MAGIC *mg)
 {
     PL_sub_generation++;
     return 0;
 }
 
-#ifdef OVERLOAD
-
 int
-magic_setamagic(SV *sv, MAGIC *mg)
+Perl_magic_setamagic(pTHX_ SV *sv, MAGIC *mg)
 {
     /* HV_badAMAGIC_on(Sv_STASH(sv)); */
     PL_amagic_generation++;
 
     return 0;
 }
-#endif /* OVERLOAD */
 
 int
-magic_getnkeys(SV *sv, MAGIC *mg)
+Perl_magic_getnkeys(pTHX_ SV *sv, MAGIC *mg)
 {
     HV *hv = (HV*)LvTARG(sv);
     HE *entry;
@@ -923,7 +995,7 @@ magic_getnkeys(SV *sv, MAGIC *mg)
 
     if (hv) {
 	(void) hv_iterinit(hv);
-	if (!SvRMAGICAL(hv) || !mg_find((SV*)hv,'P'))
+	if (! SvTIED_mg((SV*)hv, 'P'))
 	    i = HvKEYS(hv);
 	else {
 	    /*SUPPRESS 560*/
@@ -938,7 +1010,7 @@ magic_getnkeys(SV *sv, MAGIC *mg)
 }
 
 int
-magic_setnkeys(SV *sv, MAGIC *mg)
+Perl_magic_setnkeys(pTHX_ SV *sv, MAGIC *mg)
 {
     if (LvTARG(sv)) {
 	hv_ksplit((HV*)LvTARG(sv), SvIV(sv));
@@ -948,17 +1020,17 @@ magic_setnkeys(SV *sv, MAGIC *mg)
 
 /* caller is responsible for stack switching/cleanup */
 STATIC int
-magic_methcall(MAGIC *mg, char *meth, I32 flags, int n, SV *val)
+S_magic_methcall(pTHX_ SV *sv, MAGIC *mg, char *meth, I32 flags, int n, SV *val)
 {
     dSP;
 
     PUSHMARK(SP);
     EXTEND(SP, n);
-    PUSHs(mg->mg_obj);
+    PUSHs(SvTIED_obj(sv, mg));
     if (n > 1) { 
 	if (mg->mg_ptr) {
 	    if (mg->mg_len >= 0)
-		PUSHs(sv_2mortal(newSVpv(mg->mg_ptr, mg->mg_len)));
+		PUSHs(sv_2mortal(newSVpvn(mg->mg_ptr, mg->mg_len)));
 	    else if (mg->mg_len == HEf_SVKEY)
 		PUSHs((SV*)mg->mg_ptr);
 	}
@@ -971,11 +1043,11 @@ magic_methcall(MAGIC *mg, char *meth, I32 flags, int n, SV *val)
     }
     PUTBACK;
 
-    return perl_call_method(meth, flags);
+    return call_method(meth, flags);
 }
 
 STATIC int
-magic_methpack(SV *sv, MAGIC *mg, char *meth)
+S_magic_methpack(pTHX_ SV *sv, MAGIC *mg, char *meth)
 {
     dSP;
 
@@ -983,7 +1055,7 @@ magic_methpack(SV *sv, MAGIC *mg, char *meth)
     SAVETMPS;
     PUSHSTACKi(PERLSI_MAGIC);
 
-    if (magic_methcall(mg, meth, G_SCALAR, 2, NULL)) {
+    if (magic_methcall(sv, mg, meth, G_SCALAR, 2, NULL)) {
 	sv_setsv(sv, *PL_stack_sp--);
     }
 
@@ -994,7 +1066,7 @@ magic_methpack(SV *sv, MAGIC *mg, char *meth)
 }
 
 int
-magic_getpack(SV *sv, MAGIC *mg)
+Perl_magic_getpack(pTHX_ SV *sv, MAGIC *mg)
 {
     magic_methpack(sv,mg,"FETCH");
     if (mg->mg_ptr)
@@ -1003,26 +1075,26 @@ magic_getpack(SV *sv, MAGIC *mg)
 }
 
 int
-magic_setpack(SV *sv, MAGIC *mg)
+Perl_magic_setpack(pTHX_ SV *sv, MAGIC *mg)
 {
     dSP;
     ENTER;
     PUSHSTACKi(PERLSI_MAGIC);
-    magic_methcall(mg, "STORE", G_SCALAR|G_DISCARD, 3, sv);
+    magic_methcall(sv, mg, "STORE", G_SCALAR|G_DISCARD, 3, sv);
     POPSTACK;
     LEAVE;
     return 0;
 }
 
 int
-magic_clearpack(SV *sv, MAGIC *mg)
+Perl_magic_clearpack(pTHX_ SV *sv, MAGIC *mg)
 {
     return magic_methpack(sv,mg,"DELETE");
 }
 
 
 U32
-magic_sizepack(SV *sv, MAGIC *mg)
+Perl_magic_sizepack(pTHX_ SV *sv, MAGIC *mg)
 {         
     dSP;
     U32 retval = 0;
@@ -1030,7 +1102,7 @@ magic_sizepack(SV *sv, MAGIC *mg)
     ENTER;
     SAVETMPS;
     PUSHSTACKi(PERLSI_MAGIC);
-    if (magic_methcall(mg, "FETCHSIZE", G_SCALAR, 2, NULL)) {
+    if (magic_methcall(sv, mg, "FETCHSIZE", G_SCALAR, 2, NULL)) {
 	sv = *PL_stack_sp--;
 	retval = (U32) SvIV(sv)-1;
     }
@@ -1040,23 +1112,24 @@ magic_sizepack(SV *sv, MAGIC *mg)
     return retval;
 }
 
-int magic_wipepack(SV *sv, MAGIC *mg)
+int
+Perl_magic_wipepack(pTHX_ SV *sv, MAGIC *mg)
 {
     dSP;
 
     ENTER;
     PUSHSTACKi(PERLSI_MAGIC);
     PUSHMARK(SP);
-    XPUSHs(mg->mg_obj);
+    XPUSHs(SvTIED_obj(sv, mg));
     PUTBACK;
-    perl_call_method("CLEAR", G_SCALAR|G_DISCARD);
+    call_method("CLEAR", G_SCALAR|G_DISCARD);
     POPSTACK;
     LEAVE;
     return 0;
 }
 
 int
-magic_nextpack(SV *sv, MAGIC *mg, SV *key)
+Perl_magic_nextpack(pTHX_ SV *sv, MAGIC *mg, SV *key)
 {
     dSP;
     char *meth = SvOK(key) ? "NEXTKEY" : "FIRSTKEY";
@@ -1066,12 +1139,12 @@ magic_nextpack(SV *sv, MAGIC *mg, SV *key)
     PUSHSTACKi(PERLSI_MAGIC);
     PUSHMARK(SP);
     EXTEND(SP, 2);
-    PUSHs(mg->mg_obj);
+    PUSHs(SvTIED_obj(sv, mg));
     if (SvOK(key))
 	PUSHs(key);
     PUTBACK;
 
-    if (perl_call_method(meth, G_SCALAR))
+    if (call_method(meth, G_SCALAR))
 	sv_setsv(key, *PL_stack_sp--);
 
     POPSTACK;
@@ -1081,33 +1154,34 @@ magic_nextpack(SV *sv, MAGIC *mg, SV *key)
 }
 
 int
-magic_existspack(SV *sv, MAGIC *mg)
+Perl_magic_existspack(pTHX_ SV *sv, MAGIC *mg)
 {
     return magic_methpack(sv,mg,"EXISTS");
 } 
 
 int
-magic_setdbline(SV *sv, MAGIC *mg)
+Perl_magic_setdbline(pTHX_ SV *sv, MAGIC *mg)
 {
     dTHR;
     OP *o;
     I32 i;
     GV* gv;
     SV** svp;
+    STRLEN n_a;
 
     gv = PL_DBline;
     i = SvTRUE(sv);
     svp = av_fetch(GvAV(gv),
-		     atoi(MgPV(mg,PL_na)), FALSE);
+		     atoi(MgPV(mg,n_a)), FALSE);
     if (svp && SvIOKp(*svp) && (o = (OP*)SvSTASH(*svp)))
 	o->op_private = i;
-    else
-	warn("Can't break at that line\n");
+    else if (ckWARN_d(WARN_INTERNAL))
+	Perl_warner(aTHX_ WARN_INTERNAL, "Can't break at that line\n");
     return 0;
 }
 
 int
-magic_getarylen(SV *sv, MAGIC *mg)
+Perl_magic_getarylen(pTHX_ SV *sv, MAGIC *mg)
 {
     dTHR;
     sv_setiv(sv, AvFILL((AV*)mg->mg_obj) + PL_curcop->cop_arybase);
@@ -1115,7 +1189,7 @@ magic_getarylen(SV *sv, MAGIC *mg)
 }
 
 int
-magic_setarylen(SV *sv, MAGIC *mg)
+Perl_magic_setarylen(pTHX_ SV *sv, MAGIC *mg)
 {
     dTHR;
     av_fill((AV*)mg->mg_obj, SvIV(sv) - PL_curcop->cop_arybase);
@@ -1123,7 +1197,7 @@ magic_setarylen(SV *sv, MAGIC *mg)
 }
 
 int
-magic_getpos(SV *sv, MAGIC *mg)
+Perl_magic_getpos(pTHX_ SV *sv, MAGIC *mg)
 {
     SV* lsv = LvTARG(sv);
     
@@ -1131,7 +1205,10 @@ magic_getpos(SV *sv, MAGIC *mg)
 	mg = mg_find(lsv, 'g');
 	if (mg && mg->mg_len >= 0) {
 	    dTHR;
-	    sv_setiv(sv, mg->mg_len + PL_curcop->cop_arybase);
+	    I32 i = mg->mg_len;
+	    if (IN_UTF8)
+		sv_pos_b2u(lsv, &i);
+	    sv_setiv(sv, i + PL_curcop->cop_arybase);
 	    return 0;
 	}
     }
@@ -1140,11 +1217,13 @@ magic_getpos(SV *sv, MAGIC *mg)
 }
 
 int
-magic_setpos(SV *sv, MAGIC *mg)
+Perl_magic_setpos(pTHX_ SV *sv, MAGIC *mg)
 {
     SV* lsv = LvTARG(sv);
     SSize_t pos;
     STRLEN len;
+    STRLEN ulen;
+    dTHR;
 
     mg = 0;
     
@@ -1162,7 +1241,16 @@ magic_setpos(SV *sv, MAGIC *mg)
     }
     len = SvPOK(lsv) ? SvCUR(lsv) : sv_len(lsv);
 
-    WITH_THR(pos = SvIV(sv) - PL_curcop->cop_arybase);
+    pos = SvIV(sv) - PL_curcop->cop_arybase;
+
+    if (IN_UTF8) {
+	ulen = sv_len_utf8(lsv);
+	if (ulen)
+	    len = ulen;
+	else
+	    ulen = 0;
+    }
+
     if (pos < 0) {
 	pos += len;
 	if (pos < 0)
@@ -1170,6 +1258,13 @@ magic_setpos(SV *sv, MAGIC *mg)
     }
     else if (pos > len)
 	pos = len;
+
+    if (ulen) {
+	I32 p = pos;
+	sv_pos_u2b(lsv, &p, 0);
+	pos = p;
+    }
+	
     mg->mg_len = pos;
     mg->mg_flags &= ~MGf_MINMATCH;
 
@@ -1177,7 +1272,7 @@ magic_setpos(SV *sv, MAGIC *mg)
 }
 
 int
-magic_getglob(SV *sv, MAGIC *mg)
+Perl_magic_getglob(pTHX_ SV *sv, MAGIC *mg)
 {
     if (SvFAKE(sv)) {			/* FAKE globs can get coerced */
 	SvFAKE_off(sv);
@@ -1190,14 +1285,15 @@ magic_getglob(SV *sv, MAGIC *mg)
 }
 
 int
-magic_setglob(SV *sv, MAGIC *mg)
+Perl_magic_setglob(pTHX_ SV *sv, MAGIC *mg)
 {
     register char *s;
     GV* gv;
+    STRLEN n_a;
 
     if (!SvOK(sv))
 	return 0;
-    s = SvPV(sv, PL_na);
+    s = SvPV(sv, n_a);
     if (*s == '*' && s[1])
 	s++;
     gv = gv_fetchpv(s,TRUE, SVt_PVGV);
@@ -1210,7 +1306,7 @@ magic_setglob(SV *sv, MAGIC *mg)
 }
 
 int
-magic_getsubstr(SV *sv, MAGIC *mg)
+Perl_magic_getsubstr(pTHX_ SV *sv, MAGIC *mg)
 {
     STRLEN len;
     SV *lsv = LvTARG(sv);
@@ -1227,7 +1323,7 @@ magic_getsubstr(SV *sv, MAGIC *mg)
 }
 
 int
-magic_setsubstr(SV *sv, MAGIC *mg)
+Perl_magic_setsubstr(pTHX_ SV *sv, MAGIC *mg)
 {
     STRLEN len;
     char *tmps = SvPV(sv,len);
@@ -1236,7 +1332,7 @@ magic_setsubstr(SV *sv, MAGIC *mg)
 }
 
 int
-magic_gettaint(SV *sv, MAGIC *mg)
+Perl_magic_gettaint(pTHX_ SV *sv, MAGIC *mg)
 {
     dTHR;
     TAINT_IF((mg->mg_len & 1) ||
@@ -1245,7 +1341,7 @@ magic_gettaint(SV *sv, MAGIC *mg)
 }
 
 int
-magic_settaint(SV *sv, MAGIC *mg)
+Perl_magic_settaint(pTHX_ SV *sv, MAGIC *mg)
 {
     dTHR;
     if (PL_localizing) {
@@ -1262,7 +1358,7 @@ magic_settaint(SV *sv, MAGIC *mg)
 }
 
 int
-magic_getvec(SV *sv, MAGIC *mg)
+Perl_magic_getvec(pTHX_ SV *sv, MAGIC *mg)
 {
     SV *lsv = LvTARG(sv);
     unsigned char *s;
@@ -1328,14 +1424,14 @@ magic_getvec(SV *sv, MAGIC *mg)
 }
 
 int
-magic_setvec(SV *sv, MAGIC *mg)
+Perl_magic_setvec(pTHX_ SV *sv, MAGIC *mg)
 {
     do_vecset(sv);	/* XXX slurp this routine */
     return 0;
 }
 
 int
-magic_getdefelem(SV *sv, MAGIC *mg)
+Perl_magic_getdefelem(pTHX_ SV *sv, MAGIC *mg)
 {
     SV *targ = Nullsv;
     if (LvTARGLEN(sv)) {
@@ -1375,7 +1471,7 @@ magic_getdefelem(SV *sv, MAGIC *mg)
 }
 
 int
-magic_setdefelem(SV *sv, MAGIC *mg)
+Perl_magic_setdefelem(pTHX_ SV *sv, MAGIC *mg)
 {
     if (LvTARGLEN(sv))
 	vivify_defelem(sv);
@@ -1387,7 +1483,7 @@ magic_setdefelem(SV *sv, MAGIC *mg)
 }
 
 void
-vivify_defelem(SV *sv)
+Perl_vivify_defelem(pTHX_ SV *sv)
 {
     dTHR;			/* just for SvREFCNT_inc and SvREFCNT_dec*/
     MAGIC *mg;
@@ -1397,6 +1493,7 @@ vivify_defelem(SV *sv)
 	return;
     if (mg->mg_obj) {
 	SV *ahv = LvTARG(sv);
+	STRLEN n_a;
 	if (SvTYPE(ahv) == SVt_PVHV) {
 	    HE *he = hv_fetch_ent((HV*)ahv, mg->mg_obj, TRUE, 0);
 	    if (he)
@@ -1408,7 +1505,7 @@ vivify_defelem(SV *sv)
 		value = *svp;
 	}
 	if (!value || value == &PL_sv_undef)
-	    croak(no_helem, SvPV(mg->mg_obj, PL_na));
+	    Perl_croak(aTHX_ PL_no_helem, SvPV(mg->mg_obj, n_a));
     }
     else {
 	AV* av = (AV*)LvTARG(sv);
@@ -1417,7 +1514,7 @@ vivify_defelem(SV *sv)
 	else {
 	    SV** svp = av_fetch(av, LvTARGOFF(sv), TRUE);
 	    if (!svp || (value = *svp) == &PL_sv_undef)
-		croak(no_aelem, (I32)LvTARGOFF(sv));
+		Perl_croak(aTHX_ PL_no_aelem, (I32)LvTARGOFF(sv));
 	}
     }
     (void)SvREFCNT_inc(value);
@@ -1430,7 +1527,28 @@ vivify_defelem(SV *sv)
 }
 
 int
-magic_setmglob(SV *sv, MAGIC *mg)
+Perl_magic_killbackrefs(pTHX_ SV *sv, MAGIC *mg)
+{
+    AV *av = (AV*)mg->mg_obj;
+    SV **svp = AvARRAY(av);
+    I32 i = AvFILLp(av);
+    while (i >= 0) {
+	if (svp[i] && svp[i] != &PL_sv_undef) {
+	    if (!SvWEAKREF(svp[i]))
+		Perl_croak(aTHX_ "panic: magic_killbackrefs");
+	    /* XXX Should we check that it hasn't changed? */
+	    SvRV(svp[i]) = 0;
+	    SvOK_off(svp[i]);
+	    SvWEAKREF_off(svp[i]);
+	    svp[i] = &PL_sv_undef;
+	}
+	i--;
+    }
+    return 0;
+}
+
+int
+Perl_magic_setmglob(pTHX_ SV *sv, MAGIC *mg)
 {
     mg->mg_len = -1;
     SvSCREAM_off(sv);
@@ -1438,7 +1556,7 @@ magic_setmglob(SV *sv, MAGIC *mg)
 }
 
 int
-magic_setbm(SV *sv, MAGIC *mg)
+Perl_magic_setbm(pTHX_ SV *sv, MAGIC *mg)
 {
     sv_unmagic(sv, 'B');
     SvVALID_off(sv);
@@ -1446,7 +1564,7 @@ magic_setbm(SV *sv, MAGIC *mg)
 }
 
 int
-magic_setfm(SV *sv, MAGIC *mg)
+Perl_magic_setfm(pTHX_ SV *sv, MAGIC *mg)
 {
     sv_unmagic(sv, 'f');
     SvCOMPILED_off(sv);
@@ -1454,7 +1572,7 @@ magic_setfm(SV *sv, MAGIC *mg)
 }
 
 int
-magic_setuvar(SV *sv, MAGIC *mg)
+Perl_magic_setuvar(pTHX_ SV *sv, MAGIC *mg)
 {
     struct ufuncs *uf = (struct ufuncs *)mg->mg_ptr;
 
@@ -1464,7 +1582,7 @@ magic_setuvar(SV *sv, MAGIC *mg)
 }
 
 int
-magic_freeregexp(SV *sv, MAGIC *mg)
+Perl_magic_freeregexp(pTHX_ SV *sv, MAGIC *mg)
 {
     regexp *re = (regexp *)mg->mg_obj;
     ReREFCNT_dec(re);
@@ -1473,10 +1591,10 @@ magic_freeregexp(SV *sv, MAGIC *mg)
 
 #ifdef USE_LOCALE_COLLATE
 int
-magic_setcollxfrm(SV *sv, MAGIC *mg)
+Perl_magic_setcollxfrm(pTHX_ SV *sv, MAGIC *mg)
 {
     /*
-     * René Descartes said "I think not."
+     * RenE<eacute> Descartes said "I think not."
      * and vanished with a faint plop.
      */
     if (mg->mg_ptr) {
@@ -1489,7 +1607,7 @@ magic_setcollxfrm(SV *sv, MAGIC *mg)
 #endif /* USE_LOCALE_COLLATE */
 
 int
-magic_set(SV *sv, MAGIC *mg)
+Perl_magic_set(pTHX_ SV *sv, MAGIC *mg)
 {
     dTHR;
     register char *s;
@@ -1499,6 +1617,29 @@ magic_set(SV *sv, MAGIC *mg)
     case '\001':	/* ^A */
 	sv_setsv(PL_bodytarget, sv);
 	break;
+    case '\002':	/* ^B */
+	if ( ! (PL_dowarn & G_WARN_ALL_MASK)) {
+            if (memEQ(SvPVX(sv), WARN_ALLstring, WARNsize)) {
+	        PL_compiling.cop_warnings = WARN_ALL;
+	        PL_dowarn |= G_WARN_ONCE ;
+	    }	
+	    else if (memEQ(SvPVX(sv), WARN_NONEstring, WARNsize))
+	        PL_compiling.cop_warnings = WARN_NONE;
+            else {
+	        if (specialWARN(PL_compiling.cop_warnings))
+		    PL_compiling.cop_warnings = newSVsv(sv) ;
+	        else
+	            sv_setsv(PL_compiling.cop_warnings, sv);
+	        if (isWARN_on(PL_compiling.cop_warnings, WARN_ONCE))
+	            PL_dowarn |= G_WARN_ONCE ;
+	    }
+	}
+	break;
+
+    case '\003':	/* ^C */
+	PL_minus_c = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv);
+	break;
+
     case '\004':	/* ^D */
 	PL_debug = (SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv)) | 0x80000000;
 	DEBUG_x(dump_all());
@@ -1507,12 +1648,14 @@ magic_set(SV *sv, MAGIC *mg)
 #ifdef VMS
 	set_vaxc_errno(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv));
 #else
-#ifdef WIN32
+#  ifdef WIN32
 	SetLastError( SvIV(sv) );
-#else
+#  else
+#    ifndef OS2
 	/* will anyone ever use this? */
 	SETERRNO(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv), 4);
-#endif
+#    endif
+#  endif
 #endif
 	break;
     case '\006':	/* ^F */
@@ -1521,11 +1664,11 @@ magic_set(SV *sv, MAGIC *mg)
     case '\010':	/* ^H */
 	PL_hints = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv);
 	break;
-    case '\t':	/* ^I */
+    case '\011':	/* ^I */ /* NOT \t in EBCDIC */
 	if (PL_inplace)
 	    Safefree(PL_inplace);
 	if (SvOK(sv))
-	    PL_inplace = savepv(SvPV(sv,PL_na));
+	    PL_inplace = savepv(SvPV(sv,len));
 	else
 	    PL_inplace = Nullch;
 	break;
@@ -1533,12 +1676,14 @@ magic_set(SV *sv, MAGIC *mg)
 	if (PL_osname)
 	    Safefree(PL_osname);
 	if (SvOK(sv))
-	    PL_osname = savepv(SvPV(sv,PL_na));
+	    PL_osname = savepv(SvPV(sv,len));
 	else
 	    PL_osname = Nullch;
 	break;
     case '\020':	/* ^P */
 	PL_perldb = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv);
+	if (PL_perldb && !PL_DBsingle)
+	    init_debugger();
 	break;
     case '\024':	/* ^T */
 #ifdef BIG_TIME
@@ -1548,7 +1693,11 @@ magic_set(SV *sv, MAGIC *mg)
 #endif
 	break;
     case '\027':	/* ^W */
-	PL_dowarn = (bool)(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv));
+	if ( ! (PL_dowarn & G_WARN_ALL_MASK)) {
+	    i = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv);
+	    PL_dowarn = (PL_dowarn & ~G_WARN_ON) 
+		    		| (i ? G_WARN_ON : G_WARN_OFF) ;
+	}
 	break;
     case '.':
 	if (PL_localizing) {
@@ -1560,12 +1709,12 @@ magic_set(SV *sv, MAGIC *mg)
 	break;
     case '^':
 	Safefree(IoTOP_NAME(GvIOp(PL_defoutgv)));
-	IoTOP_NAME(GvIOp(PL_defoutgv)) = s = savepv(SvPV(sv,PL_na));
+	IoTOP_NAME(GvIOp(PL_defoutgv)) = s = savepv(SvPV(sv,len));
 	IoTOP_GV(GvIOp(PL_defoutgv)) = gv_fetchpv(s,TRUE, SVt_PVIO);
 	break;
     case '~':
 	Safefree(IoFMT_NAME(GvIOp(PL_defoutgv)));
-	IoFMT_NAME(GvIOp(PL_defoutgv)) = s = savepv(SvPV(sv,PL_na));
+	IoFMT_NAME(GvIOp(PL_defoutgv)) = s = savepv(SvPV(sv,len));
 	IoFMT_GV(GvIOp(PL_defoutgv)) = gv_fetchpv(s,TRUE, SVt_PVIO);
 	break;
     case '=':
@@ -1622,7 +1771,7 @@ magic_set(SV *sv, MAGIC *mg)
     case '#':
 	if (PL_ofmt)
 	    Safefree(PL_ofmt);
-	PL_ofmt = savepv(SvPV(sv,PL_na));
+	PL_ofmt = savepv(SvPV(sv,len));
 	break;
     case '[':
 	PL_compiling.cop_arybase = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv);
@@ -1665,7 +1814,7 @@ magic_set(SV *sv, MAGIC *mg)
 	    (void)PerlProc_setuid(PL_uid);
 	else {
 	    PL_uid = (I32)PerlProc_getuid();
-	    croak("setruid() not implemented");
+	    Perl_croak(aTHX_ "setruid() not implemented");
 	}
 #endif
 #endif
@@ -1692,7 +1841,7 @@ magic_set(SV *sv, MAGIC *mg)
 	    PerlProc_setuid(PL_euid);
 	else {
 	    PL_euid = (I32)PerlProc_geteuid();
-	    croak("seteuid() not implemented");
+	    Perl_croak(aTHX_ "seteuid() not implemented");
 	}
 #endif
 #endif
@@ -1719,7 +1868,7 @@ magic_set(SV *sv, MAGIC *mg)
 	    (void)PerlProc_setgid(PL_gid);
 	else {
 	    PL_gid = (I32)PerlProc_getgid();
-	    croak("setrgid() not implemented");
+	    Perl_croak(aTHX_ "setrgid() not implemented");
 	}
 #endif
 #endif
@@ -1730,13 +1879,12 @@ magic_set(SV *sv, MAGIC *mg)
     case ')':
 #ifdef HAS_SETGROUPS
 	{
-	    char *p = SvPV(sv, PL_na);
+	    char *p = SvPV(sv, len);
 	    Groups_t gary[NGROUPS];
 
-	    SET_NUMERIC_STANDARD();
 	    while (isSPACE(*p))
 		++p;
-	    PL_egid = I_V(atof(p));
+	    PL_egid = I_V(Atol(p));
 	    for (i = 0; i < NGROUPS; ++i) {
 		while (*p && !isSPACE(*p))
 		    ++p;
@@ -1744,7 +1892,7 @@ magic_set(SV *sv, MAGIC *mg)
 		    ++p;
 		if (!*p)
 		    break;
-		gary[i] = I_V(atof(p));
+		gary[i] = I_V(Atol(p));
 	    }
 	    if (i)
 		(void)setgroups(i, gary);
@@ -1769,7 +1917,7 @@ magic_set(SV *sv, MAGIC *mg)
 	    (void)PerlProc_setgid(PL_egid);
 	else {
 	    PL_egid = (I32)PerlProc_getegid();
-	    croak("setegid() not implemented");
+	    Perl_croak(aTHX_ "setegid() not implemented");
 	}
 #endif
 #endif
@@ -1778,7 +1926,7 @@ magic_set(SV *sv, MAGIC *mg)
 	PL_tainting |= (PL_uid && (PL_euid != PL_uid || PL_egid != PL_gid));
 	break;
     case ':':
-	PL_chopset = SvPV_force(sv,PL_na);
+	PL_chopset = SvPV_force(sv,len);
 	break;
     case '0':
 	if (!PL_origalen) {
@@ -1791,7 +1939,10 @@ magic_set(SV *sv, MAGIC *mg)
 		    || PL_origargv[i] == s + 2
 #endif 
 		   )
-		    s += strlen(++s);	/* this one is ok too */
+		{
+		    ++s;
+		    s += strlen(s);	/* this one is ok too */
+		}
 		else
 		    break;
 	    }
@@ -1804,8 +1955,10 @@ magic_set(SV *sv, MAGIC *mg)
 		my_setenv("NoNe  SuCh", Nullch);
 					    /* force copy of environment */
 		for (i = 0; PL_origenviron[i]; i++)
-		    if (PL_origenviron[i] == s + 1)
-			s += strlen(++s);
+		    if (PL_origenviron[i] == s + 1) {
+			++s;
+			s += strlen(s);
+		    }
 		    else
 			break;
 	    }
@@ -1843,28 +1996,27 @@ magic_set(SV *sv, MAGIC *mg)
 
 #ifdef USE_THREADS
 int
-magic_mutexfree(SV *sv, MAGIC *mg)
+Perl_magic_mutexfree(pTHX_ SV *sv, MAGIC *mg)
 {
     dTHR;
-    DEBUG_L(PerlIO_printf(PerlIO_stderr(), "0x%lx: magic_mutexfree 0x%lx\n",
+    DEBUG_S(PerlIO_printf(PerlIO_stderr(), "0x%lx: magic_mutexfree 0x%lx\n",
 			  (unsigned long)thr, (unsigned long)sv);)
     if (MgOWNER(mg))
-	croak("panic: magic_mutexfree");
+	Perl_croak(aTHX_ "panic: magic_mutexfree");
     MUTEX_DESTROY(MgMUTEXP(mg));
     COND_DESTROY(MgCONDP(mg));
-    SvREFCNT_dec(sv);
     return 0;
 }
 #endif /* USE_THREADS */
 
 I32
-whichsig(char *sig)
+Perl_whichsig(pTHX_ char *sig)
 {
     register char **sigv;
 
-    for (sigv = sig_name+1; *sigv; sigv++)
+    for (sigv = PL_sig_name+1; *sigv; sigv++)
 	if (strEQ(sig,*sigv))
-	    return sig_num[sigv - sig_name];
+	    return PL_sig_num[sigv - PL_sig_name];
 #ifdef SIGCLD
     if (strEQ(sig,"CHLD"))
 	return SIGCLD;
@@ -1878,22 +2030,10 @@ whichsig(char *sig)
 
 static SV* sig_sv;
 
-STATIC void
-unwind_handler_stack(void *p)
-{
-    dTHR;
-    U32 flags = *(U32*)p;
-
-    if (flags & 1)
-	PL_savestack_ix -= 5; /* Unprotect save in progress. */
-    /* cxstack_ix-- Not needed, die already unwound it. */
-    if (flags & 64)
-	SvREFCNT_dec(sig_sv);
-}
-
 Signal_t
-sighandler(int sig)
+Perl_sighandler(int sig)
 {
+    dTHX;
     dSP;
     GV *gv = Nullgv;
     HV *st;
@@ -1913,9 +2053,9 @@ sighandler(int sig)
     if (PL_scopestack_ix < PL_scopestack_max - 3)
 	flags |= 16;
 
-    if (!psig_ptr[sig])
-	die("Signal SIG%s received, but no signal handler set.\n",
-	    sig_name[sig]);
+    if (!PL_psig_ptr[sig])
+	Perl_die(aTHX_ "Signal SIG%s received, but no signal handler set.\n",
+	    PL_sig_name[sig]);
 
     /* Max number of items pushed there is 3*n or 4. We cannot fix
        infinity, so we fix 4 (in fact 5): */
@@ -1933,27 +2073,27 @@ sighandler(int sig)
     if (flags & 16)
 	PL_scopestack_ix += 1;
     /* sv_2cv is too complicated, try a simpler variant first: */
-    if (!SvROK(psig_ptr[sig]) || !(cv = (CV*)SvRV(psig_ptr[sig])) 
+    if (!SvROK(PL_psig_ptr[sig]) || !(cv = (CV*)SvRV(PL_psig_ptr[sig])) 
 	|| SvTYPE(cv) != SVt_PVCV)
-	cv = sv_2cv(psig_ptr[sig],&st,&gv,TRUE);
+	cv = sv_2cv(PL_psig_ptr[sig],&st,&gv,TRUE);
 
     if (!cv || !CvROOT(cv)) {
-	if (PL_dowarn)
-	    warn("SIG%s handler \"%s\" not defined.\n",
-		sig_name[sig], (gv ? GvENAME(gv)
+	if (ckWARN(WARN_SIGNAL))
+	    Perl_warner(aTHX_ WARN_SIGNAL, "SIG%s handler \"%s\" not defined.\n",
+		PL_sig_name[sig], (gv ? GvENAME(gv)
 				: ((cv && CvGV(cv))
 				   ? GvENAME(CvGV(cv))
 				   : "__ANON__")));
 	goto cleanup;
     }
 
-    if(psig_name[sig]) {
-    	sv = SvREFCNT_inc(psig_name[sig]);
+    if(PL_psig_name[sig]) {
+    	sv = SvREFCNT_inc(PL_psig_name[sig]);
 	flags |= 64;
 	sig_sv = sv;
     } else {
 	sv = sv_newmortal();
-	sv_setpv(sv,sig_name[sig]);
+	sv_setpv(sv,PL_sig_name[sig]);
     }
 
     PUSHSTACKi(PERLSI_SIGNAL);
@@ -1961,7 +2101,7 @@ sighandler(int sig)
     PUSHs(sv);
     PUTBACK;
 
-    perl_call_sv((SV*)cv, G_DISCARD);
+    call_sv((SV*)cv, G_DISCARD);
 
     POPSTACK;
 cleanup:
@@ -1983,3 +2123,62 @@ cleanup:
 }
 
 
+#ifdef PERL_OBJECT
+#define NO_XSLOCKS
+#include "XSUB.h"
+#endif
+
+static void
+restore_magic(pTHXo_ void *p)
+{
+    dTHR;
+    MGS* mgs = SSPTR((I32)p, MGS*);
+    SV* sv = mgs->mgs_sv;
+
+    if (!sv)
+        return;
+
+    if (SvTYPE(sv) >= SVt_PVMG && SvMAGIC(sv))
+    {
+	if (mgs->mgs_flags)
+	    SvFLAGS(sv) |= mgs->mgs_flags;
+	else
+	    mg_magical(sv);
+	if (SvGMAGICAL(sv))
+	    SvFLAGS(sv) &= ~(SVf_IOK|SVf_NOK|SVf_POK);
+    }
+
+    mgs->mgs_sv = NULL;  /* mark the MGS structure as restored */
+
+    /* If we're still on top of the stack, pop us off.  (That condition
+     * will be satisfied if restore_magic was called explicitly, but *not*
+     * if it's being called via leave_scope.)
+     * The reason for doing this is that otherwise, things like sv_2cv()
+     * may leave alloc gunk on the savestack, and some code
+     * (e.g. sighandler) doesn't expect that...
+     */
+    if (PL_savestack_ix == mgs->mgs_ss_ix)
+    {
+	I32 popval = SSPOPINT;
+        assert(popval == SAVEt_DESTRUCTOR);
+        PL_savestack_ix -= 2;
+	popval = SSPOPINT;
+        assert(popval == SAVEt_ALLOC);
+	popval = SSPOPINT;
+        PL_savestack_ix -= popval;
+    }
+
+}
+
+static void
+unwind_handler_stack(pTHXo_ void *p)
+{
+    dTHR;
+    U32 flags = *(U32*)p;
+
+    if (flags & 1)
+	PL_savestack_ix -= 5; /* Unprotect save in progress. */
+    /* cxstack_ix-- Not needed, die already unwound it. */
+    if (flags & 64)
+	SvREFCNT_dec(sig_sv);
+}