X-Git-Url: http://git.shadowcat.co.uk/gitweb/gitweb.cgi?a=blobdiff_plain;f=mg.c;h=2b96829572d8dad3c36860131f51283f129a9fbf;hb=778ddebdd36200650e05e3789258e36307a5988b;hp=e88a8c5299cc537e8895562507f7934d523e5147;hpb=a5f75d667838e8e7bb037880391f5c44476d33b4;p=p5sagit%2Fp5-mst-13.2.git

diff --git a/mg.c b/mg.c
index e88a8c5..2b96829 100644
--- a/mg.c
+++ b/mg.c
@@ -1,6 +1,6 @@
 /*    mg.c
  *
- *    Copyright (c) 1991-1994, Larry Wall
+ *    Copyright (c) 1991-1997, 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.
@@ -15,16 +15,26 @@
 #include "EXTERN.h"
 #include "perl.h"
 
-/* Omit -- it causes too much grief on mixed systems.
+/* XXX If this causes problems, set i_unistd=undef in the hint file.  */
 #ifdef I_UNISTD
 # include <unistd.h>
 #endif
-*/
+
+#if defined(HAS_GETGROUPS) || defined(HAS_SETGROUPS)
+#  ifndef NGROUPS
+#    define NGROUPS 32
+#  endif
+#endif
 
 /*
  * 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;
@@ -32,16 +42,15 @@ struct magic_state {
 typedef struct magic_state MGS;
 
 static void restore_magic _((void *p));
+#define VTBL			*vtbl
 
-static MGS *
-save_magic(sv)
-SV* sv;
-{
-    MGS* mgs;
+#endif
 
+STATIC void
+save_magic(MGS *mgs, SV *sv)
+{
     assert(SvMAGICAL(sv));
 
-    mgs = (MGS*)safemalloc(sizeof(MGS));
     mgs->mgs_sv = sv;
     mgs->mgs_flags = SvMAGICAL(sv) | SvREADONLY(sv);
     SAVEDESTRUCTOR(restore_magic, mgs);
@@ -49,15 +58,12 @@ SV* sv;
     SvMAGICAL_off(sv);
     SvREADONLY_off(sv);
     SvFLAGS(sv) |= (SvFLAGS(sv) & (SVp_IOK|SVp_NOK|SVp_POK)) >> PRIVSHIFT;
-
-    return mgs;
 }
 
-static void
-restore_magic(p)
-void* p;
+STATIC void
+restore_magic(void *p)
 {
-    MGS *mgs = (MGS*)p;
+    MGS* mgs = (MGS*)p;
     SV* sv = mgs->mgs_sv;
 
     if (SvTYPE(sv) >= SVt_PVMG && SvMAGIC(sv))
@@ -69,52 +75,53 @@ void* p;
 	if (SvGMAGICAL(sv))
 	    SvFLAGS(sv) &= ~(SVf_IOK|SVf_NOK|SVf_POK);
     }
-
-    Safefree(mgs);
 }
 
-
 void
-mg_magical(sv)
-SV* sv;
+mg_magical(SV *sv)
 {
     MAGIC* mg;
     for (mg = SvMAGIC(sv); mg; mg = mg->mg_moremagic) {
 	MGVTBL* vtbl = mg->mg_virtual;
 	if (vtbl) {
-	    if (vtbl->svt_get && !(mg->mg_flags & MGf_GSKIP))
+	    if ((vtbl->svt_get != NULL) && !(mg->mg_flags & MGf_GSKIP))
 		SvGMAGICAL_on(sv);
 	    if (vtbl->svt_set)
 		SvSMAGICAL_on(sv);
-	    if (!(SvFLAGS(sv) & (SVs_GMG|SVs_SMG)) || vtbl->svt_clear)
+	    if (!(SvFLAGS(sv) & (SVs_GMG|SVs_SMG)) || (vtbl->svt_clear != NULL))
 		SvRMAGICAL_on(sv);
 	}
     }
 }
 
 int
-mg_get(sv)
-SV* sv;
+mg_get(SV *sv)
 {
-    MGS* mgs;
+    MGS mgs;
     MAGIC* mg;
     MAGIC** mgp;
+    int mgp_valid = 0;
 
     ENTER;
-    mgs = save_magic(sv);
+    save_magic(&mgs, sv);
 
     mgp = &SvMAGIC(sv);
     while ((mg = *mgp) != 0) {
 	MGVTBL* vtbl = mg->mg_virtual;
-	if (!(mg->mg_flags & MGf_GSKIP) && vtbl && vtbl->svt_get) {
-	    (*vtbl->svt_get)(sv, mg);
+	if (!(mg->mg_flags & MGf_GSKIP) && vtbl && (vtbl->svt_get != NULL)) {
+	    (VTBL->svt_get)(sv, mg);
 	    /* Ignore this magic if it's been deleted */
-	    if (*mgp == mg && (mg->mg_flags & MGf_GSKIP))
-		mgs->mgs_flags = 0;
+	    if ((mg == (mgp_valid ? *mgp : SvMAGIC(sv))) &&
+		  (mg->mg_flags & MGf_GSKIP))
+		mgs.mgs_flags = 0;
 	}
 	/* Advance to next magic (complicated by possible deletion) */
-	if (*mgp == mg)
+	if (mg == (mgp_valid ? *mgp : SvMAGIC(sv))) {
 	    mgp = &mg->mg_moremagic;
+	    mgp_valid = 1;
+	}
+	else
+	    mgp = &SvMAGIC(sv);	/* Re-establish pointer after sv_upgrade */
     }
 
     LEAVE;
@@ -122,25 +129,24 @@ SV* sv;
 }
 
 int
-mg_set(sv)
-SV* sv;
+mg_set(SV *sv)
 {
-    MGS* mgs;
+    MGS mgs;
     MAGIC* mg;
     MAGIC* nextmg;
 
     ENTER;
-    mgs = save_magic(sv);
+    save_magic(&mgs, 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;
+	    mgs.mgs_flags = 0;
 	}
-	if (vtbl && vtbl->svt_set)
-	    (*vtbl->svt_set)(sv, mg);
+	if (vtbl && (vtbl->svt_set != NULL))
+	    (VTBL->svt_set)(sv, mg);
     }
 
     LEAVE;
@@ -148,8 +154,7 @@ SV* sv;
 }
 
 U32
-mg_len(sv)
-SV* sv;
+mg_length(SV *sv)
 {
     MAGIC* mg;
     char *junk;
@@ -157,11 +162,13 @@ SV* sv;
 
     for (mg = SvMAGIC(sv); mg; mg = mg->mg_moremagic) {
 	MGVTBL* vtbl = mg->mg_virtual;
-	if (vtbl && vtbl->svt_len) {
+	if (vtbl && (vtbl->svt_len != NULL)) {
+	    MGS mgs;
+
 	    ENTER;
-	    save_magic(sv);
+	    save_magic(&mgs, sv);
 	    /* omit MGf_GSKIP -- not changed here */
-	    len = (*vtbl->svt_len)(sv, mg);
+	    len = (VTBL->svt_len)(sv, mg);
 	    LEAVE;
 	    return len;
 	}
@@ -171,21 +178,52 @@ SV* sv;
     return len;
 }
 
+I32
+mg_size(SV *sv)
+{
+    MAGIC* mg;
+    I32 len;
+    
+    for (mg = SvMAGIC(sv); mg; mg = mg->mg_moremagic) {
+	MGVTBL* vtbl = mg->mg_virtual;
+	if (vtbl && (vtbl->svt_len != NULL)) {
+	    MGS mgs;
+	    ENTER;
+	    /* omit MGf_GSKIP -- not changed here */
+	    len = (VTBL->svt_len)(sv, mg);
+	    LEAVE;
+	    return len;
+	}
+    }
+
+    switch(SvTYPE(sv)) {
+	case SVt_PVAV:
+	    len = AvFILLp((AV *) sv); /* Fallback to non-tied array */
+	    return len;
+	case SVt_PVHV:
+	    /* FIXME */
+	default:
+	    croak("Size magic not implemented");
+	    break;
+    }
+    return 0;
+}
+
 int
-mg_clear(sv)
-SV* sv;
+mg_clear(SV *sv)
 {
+    MGS mgs;
     MAGIC* mg;
 
     ENTER;
-    save_magic(sv);
+    save_magic(&mgs, 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)
-	    (*vtbl->svt_clear)(sv, mg);
+	if (vtbl && (vtbl->svt_clear != NULL))
+	    (VTBL->svt_clear)(sv, mg);
     }
 
     LEAVE;
@@ -193,9 +231,7 @@ SV* sv;
 }
 
 MAGIC*
-mg_find(sv, type)
-SV* sv;
-int type;
+mg_find(SV *sv, int type)
 {
     MAGIC* mg;
     for (mg = SvMAGIC(sv); mg; mg = mg->mg_moremagic) {
@@ -206,11 +242,7 @@ int type;
 }
 
 int
-mg_copy(sv, nsv, key, klen)
-SV* sv;
-SV* nsv;
-char *key;
-STRLEN klen;
+mg_copy(SV *sv, SV *nsv, char *key, I32 klen)
 {
     int count = 0;
     MAGIC* mg;
@@ -224,18 +256,20 @@ STRLEN klen;
 }
 
 int
-mg_free(sv)
-SV* sv;
+mg_free(SV *sv)
 {
     MAGIC* mg;
     MAGIC* moremagic;
     for (mg = SvMAGIC(sv); mg; mg = moremagic) {
 	MGVTBL* vtbl = mg->mg_virtual;
 	moremagic = mg->mg_moremagic;
-	if (vtbl && vtbl->svt_free)
-	    (*vtbl->svt_free)(sv, mg);
+	if (vtbl && (vtbl->svt_free != NULL))
+	    (VTBL->svt_free)(sv, mg);
 	if (mg->mg_ptr && mg->mg_type != 'g')
-	    Safefree(mg->mg_ptr);
+	    if (mg->mg_len >= 0)
+		Safefree(mg->mg_ptr);
+	    else if (mg->mg_len == HEf_SVKEY)
+		SvREFCNT_dec((SV*)mg->mg_ptr);
 	if (mg->mg_flags & MGf_REFCOUNTED)
 	    SvREFCNT_dec(mg->mg_obj);
 	Safefree(mg);
@@ -249,56 +283,53 @@ SV* sv;
 #endif
 
 U32
-magic_len(sv, mg)
-SV *sv;
-MAGIC *mg;
+magic_len(SV *sv, MAGIC *mg)
 {
+    dTHR;
     register I32 paren;
     register char *s;
     register I32 i;
+    register REGEXP *rx;
     char *t;
 
     switch (*mg->mg_ptr) {
     case '1': case '2': case '3': case '4':
     case '5': case '6': case '7': case '8': case '9': case '&':
-	if (curpm) {
+	if (curpm && (rx = curpm->op_pmregexp)) {
 	    paren = atoi(mg->mg_ptr);
 	  getparen:
-	    if (curpm->op_pmregexp &&
-	      paren <= curpm->op_pmregexp->nparens &&
-	      (s = curpm->op_pmregexp->startp[paren]) &&
-	      (t = curpm->op_pmregexp->endp[paren]) ) {
+	    if (paren <= rx->nparens &&
+		(s = rx->startp[paren]) &&
+		(t = rx->endp[paren]))
+	    {
 		i = t - s;
 		if (i >= 0)
 		    return i;
 	    }
 	}
 	return 0;
-	break;
     case '+':
-	if (curpm) {
-	    paren = curpm->op_pmregexp->lastparen;
-	    if (!paren)
-		return 0;
-	    goto getparen;
+	if (curpm && (rx = curpm->op_pmregexp)) {
+	    paren = rx->lastparen;
+	    if (paren)
+		goto getparen;
 	}
 	return 0;
-	break;
     case '`':
-	if (curpm) {
-	    if (curpm->op_pmregexp &&
-	      (s = curpm->op_pmregexp->subbeg) ) {
-		i = curpm->op_pmregexp->startp[0] - s;
+	if (curpm && (rx = curpm->op_pmregexp)) {
+	    if ((s = rx->subbeg) && rx->startp[0]) {
+		i = rx->startp[0] - s;
 		if (i >= 0)
 		    return i;
 	    }
 	}
 	return 0;
     case '\'':
-	if (curpm) {
-	    if (curpm->op_pmregexp &&
-	      (s = curpm->op_pmregexp->endp[0]) ) {
-		return (STRLEN) (curpm->op_pmregexp->subend - s);
+	if (curpm && (rx = curpm->op_pmregexp)) {
+	    if (rx->subend && (s = rx->endp[0])) {
+		i = rx->subend - s;
+		if (i >= 0)
+		    return i;
 	    }
 	}
 	return 0;
@@ -316,13 +347,13 @@ MAGIC *mg;
 }
 
 int
-magic_get(sv, mg)
-SV *sv;
-MAGIC *mg;
+magic_get(SV *sv, MAGIC *mg)
 {
+    dTHR;
     register I32 paren;
     register char *s;
     register I32 i;
+    register REGEXP *rx;
     char *t;
 
     switch (*mg->mg_ptr) {
@@ -330,44 +361,124 @@ MAGIC *mg;
 	sv_setsv(sv, bodytarget);
 	break;
     case '\004':		/* ^D */
-	sv_setiv(sv,(I32)(debug & 32767));
+	sv_setiv(sv, (IV)(debug & 32767));
+	break;
+    case '\005':  /* ^E */
+#ifdef VMS
+	{
+#	    include <descrip.h>
+#	    include <starlet.h>
+	    char msg[255];
+	    $DESCRIPTOR(msgdsc,msg);
+	    sv_setnv(sv,(double) vaxc$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
+		sv_setpv(sv,"");
+	}
+#else
+#ifdef OS2
+	if (!(_emx_env & 0x200)) {	/* Under DOS */
+	    sv_setnv(sv, (double)errno);
+	    sv_setpv(sv, errno ? Strerror(errno) : "");
+	} else {
+	    if (errno != errno_isOS2)
+		Perl_rc = _syserrno();
+	    sv_setnv(sv, (double)Perl_rc);
+	    sv_setpv(sv, os2error(Perl_rc));
+	}
+#else
+#ifdef WIN32
+	{
+	    DWORD dwErr = GetLastError();
+	    sv_setnv(sv, (double)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
+	    }
+	    else
+		sv_setpv(sv, "");
+	    SetLastError(dwErr);
+	}
+#else
+	sv_setnv(sv, (double)errno);
+	sv_setpv(sv, errno ? Strerror(errno) : "");
+#endif
+#endif
+#endif
+	SvNOK_on(sv);	/* what a wonderful hack! */
 	break;
     case '\006':		/* ^F */
-	sv_setiv(sv,(I32)maxsysfd);
+	sv_setiv(sv, (IV)maxsysfd);
 	break;
     case '\010':		/* ^H */
-	sv_setiv(sv,(I32)hints);
+	sv_setiv(sv, (IV)hints);
 	break;
     case '\t':			/* ^I */
 	if (inplace)
 	    sv_setpv(sv, inplace);
 	else
-	    sv_setsv(sv,&sv_undef);
+	    sv_setsv(sv, &sv_undef);
+	break;
+    case '\017':		/* ^O */
+	sv_setpv(sv, osname);
 	break;
     case '\020':		/* ^P */
-	sv_setiv(sv,(I32)perldb);
+	sv_setiv(sv, (IV)perldb);
+	break;
+    case '\023':		/* ^S */
+	{
+	    dTHR;
+	    if (lex_state != LEX_NOTPARSING)
+		SvOK_off(sv);
+	    else if (in_eval)
+		sv_setiv(sv, 1);
+	    else
+		sv_setiv(sv, 0);
+	}
 	break;
     case '\024':		/* ^T */
-	sv_setiv(sv,(I32)basetime);
+#ifdef BIG_TIME
+ 	sv_setnv(sv, basetime);
+#else
+	sv_setiv(sv, (IV)basetime);
+#endif
 	break;
     case '\027':		/* ^W */
-	sv_setiv(sv,(I32)dowarn);
+	sv_setiv(sv, (IV)dowarn);
 	break;
     case '1': case '2': case '3': case '4':
     case '5': case '6': case '7': case '8': case '9': case '&':
-	if (curpm) {
-	    paren = atoi(GvENAME(mg->mg_obj));
+	if (curpm && (rx = curpm->op_pmregexp)) {
+	    /*
+	     * Pre-threads, this was paren = atoi(GvENAME((GV*)mg->mg_obj));
+	     * XXX Does the new way break anything?
+	     */
+	    paren = atoi(mg->mg_ptr);
 	  getparen:
-	    if (curpm->op_pmregexp &&
-	      paren <= curpm->op_pmregexp->nparens &&
-	      (s = curpm->op_pmregexp->startp[paren]) &&
-	      (t = curpm->op_pmregexp->endp[paren]) ) {
+	    if (paren <= rx->nparens &&
+		(s = rx->startp[paren]) &&
+		(t = rx->endp[paren]))
+	    {
 		i = t - s;
+	      getrx:
 		if (i >= 0) {
-		    MAGIC *tmg;
+		    bool was_tainted;
+		    if (tainting) {
+			was_tainted = tainted;
+			tainted = FALSE;
+		    }
 		    sv_setpvn(sv,s,i);
-		    if (tainting && (tmg = mg_find(sv,'t')))
-			tmg->mg_len = 0;	/* guarantee $1 untainted */
+		    if (tainting)
+			tainted = (was_tainted || RX_MATCH_TAINTED(rx));
 		    break;
 		}
 	    }
@@ -375,32 +486,27 @@ MAGIC *mg;
 	sv_setsv(sv,&sv_undef);
 	break;
     case '+':
-	if (curpm) {
-	    paren = curpm->op_pmregexp->lastparen;
+	if (curpm && (rx = curpm->op_pmregexp)) {
+	    paren = rx->lastparen;
 	    if (paren)
 		goto getparen;
 	}
 	sv_setsv(sv,&sv_undef);
 	break;
     case '`':
-	if (curpm) {
-	    if (curpm->op_pmregexp &&
-	      (s = curpm->op_pmregexp->subbeg) ) {
-		i = curpm->op_pmregexp->startp[0] - s;
-		if (i >= 0) {
-		    sv_setpvn(sv,s,i);
-		    break;
-		}
+	if (curpm && (rx = curpm->op_pmregexp)) {
+	    if ((s = rx->subbeg) && rx->startp[0]) {
+		i = rx->startp[0] - s;
+		goto getrx;
 	    }
 	}
 	sv_setsv(sv,&sv_undef);
 	break;
     case '\'':
-	if (curpm) {
-	    if (curpm->op_pmregexp &&
-	      (s = curpm->op_pmregexp->endp[0]) ) {
-		sv_setpvn(sv,s, curpm->op_pmregexp->subend - s);
-		break;
+	if (curpm && (rx = curpm->op_pmregexp)) {
+	    if (rx->subend && (s = rx->endp[0])) {
+		i = rx->subend - s;
+		goto getrx;
 	    }
 	}
 	sv_setsv(sv,&sv_undef);
@@ -408,12 +514,19 @@ MAGIC *mg;
     case '.':
 #ifndef lint
 	if (GvIO(last_in_gv)) {
-	    sv_setiv(sv,(I32)IoLINES(GvIO(last_in_gv)));
+	    sv_setiv(sv, (IV)IoLINES(GvIO(last_in_gv)));
 	}
 #endif
 	break;
     case '?':
-	sv_setiv(sv,(I32)statusvalue);
+	{
+	    dTHR;
+	    sv_setiv(sv, (IV)STATUS_CURRENT);
+#ifdef COMPLEX_STATUS
+	    LvTARGOFF(sv) = statusvalue;
+	    LvTARGLEN(sv) = statusvalue_vms;
+#endif
+	}
 	break;
     case '^':
 	s = IoTOP_NAME(GvIOp(defoutgv));
@@ -432,13 +545,13 @@ MAGIC *mg;
 	break;
 #ifndef lint
     case '=':
-	sv_setiv(sv,(I32)IoPAGE_LEN(GvIOp(defoutgv)));
+	sv_setiv(sv, (IV)IoPAGE_LEN(GvIOp(defoutgv)));
 	break;
     case '-':
-	sv_setiv(sv,(I32)IoLINES_LEFT(GvIOp(defoutgv)));
+	sv_setiv(sv, (IV)IoLINES_LEFT(GvIOp(defoutgv)));
 	break;
     case '%':
-	sv_setiv(sv,(I32)IoPAGE(GvIOp(defoutgv)));
+	sv_setiv(sv, (IV)IoPAGE(GvIOp(defoutgv)));
 	break;
 #endif
     case ':':
@@ -446,10 +559,10 @@ MAGIC *mg;
     case '/':
 	break;
     case '[':
-	sv_setiv(sv,(I32)curcop->cop_arybase);
+	WITH_THR(sv_setiv(sv, (IV)curcop->cop_arybase));
 	break;
     case '|':
-	sv_setiv(sv, (IoFLAGS(GvIOp(defoutgv)) & IOf_FLUSH) != 0 );
+	sv_setiv(sv, (IV)(IoFLAGS(GvIOp(defoutgv)) & IOf_FLUSH) != 0 );
 	break;
     case ',':
 	sv_setpvn(sv,ofs,ofslen);
@@ -462,56 +575,61 @@ MAGIC *mg;
 	break;
     case '!':
 #ifdef VMS
-	sv_setnv(sv,(double)((errno == EVMSERR) ? vaxc$errno : errno));
+	sv_setnv(sv, (double)((errno == EVMSERR) ? vaxc$errno : errno));
+	sv_setpv(sv, errno ? Strerror(errno) : "");
 #else
-	sv_setnv(sv,(double)errno);
+	{
+	int saveerrno = errno;
+	sv_setnv(sv, (double)errno);
+#ifdef OS2
+	if (errno == errno_isOS2) sv_setpv(sv, os2error(Perl_rc));
+	else
 #endif
 	sv_setpv(sv, errno ? Strerror(errno) : "");
+	errno = saveerrno;
+	}
+#endif
 	SvNOK_on(sv);	/* what a wonderful hack! */
 	break;
     case '<':
-	sv_setiv(sv,(I32)uid);
+	sv_setiv(sv, (IV)uid);
 	break;
     case '>':
-	sv_setiv(sv,(I32)euid);
+	sv_setiv(sv, (IV)euid);
 	break;
     case '(':
-	s = buf;
-	(void)sprintf(s,"%d",(int)gid);
+	sv_setiv(sv, (IV)gid);
+	sv_setpvf(sv, "%Vd", (IV)gid);
 	goto add_groups;
     case ')':
-	s = buf;
-	(void)sprintf(s,"%d",(int)egid);
+	sv_setiv(sv, (IV)egid);
+	sv_setpvf(sv, "%Vd", (IV)egid);
       add_groups:
-	while (*s) s++;
 #ifdef HAS_GETGROUPS
-#ifndef NGROUPS
-#define NGROUPS 32
-#endif
 	{
 	    Groups_t gary[NGROUPS];
-
 	    i = getgroups(NGROUPS,gary);
-	    while (--i >= 0) {
-		(void)sprintf(s," %ld", (long)gary[i]);
-		while (*s) s++;
-	    }
+	    while (--i >= 0)
+		sv_catpvf(sv, " %Vd", (IV)gary[i]);
 	}
 #endif
-	sv_setpv(sv,buf);
+	SvIOK_on(sv);	/* what a wonderful hack! */
 	break;
     case '*':
 	break;
     case '0':
 	break;
+#ifdef USE_THREADS
+    case '@':
+	sv_setsv(sv, thr->errsv);
+	break;
+#endif /* USE_THREADS */
     }
     return 0;
 }
 
 int
-magic_getuvar(sv, mg)
-SV *sv;
-MAGIC *mg;
+magic_getuvar(SV *sv, MAGIC *mg)
 {
     struct ufuncs *uf = (struct ufuncs *)mg->mg_ptr;
 
@@ -521,104 +639,197 @@ MAGIC *mg;
 }
 
 int
-magic_setenv(sv,mg)
-SV* sv;
-MAGIC* mg;
+magic_setenv(SV *sv, MAGIC *mg)
 {
     register char *s;
-    STRLEN len;
+    char *ptr;
+    STRLEN len, klen;
     I32 i;
+
     s = SvPV(sv,len);
-    my_setenv(mg->mg_ptr,s);
+    ptr = MgPV(mg,klen);
+    my_setenv(ptr, s);
+
 #ifdef DYNAMIC_ENV_FETCH
      /* We just undefd an environment var.  Is a replacement */
      /* waiting in the wings? */
     if (!len) {
-	SV **envsvp;
-	if (envsvp = hv_fetch(GvHVn(envgv),mg->mg_ptr,mg->mg_len,FALSE))
-	    s = SvPV(*envsvp,len);
+	SV **valp;
+	if ((valp = hv_fetch(GvHVn(envgv), ptr, klen, FALSE)))
+	    s = SvPV(*valp, len);
     }
 #endif
+
+#if !defined(OS2) && !defined(AMIGAOS) && !defined(WIN32) && !defined(MSDOS)
 			    /* And you'll never guess what the dog had */
 			    /*   in its mouth... */
     if (tainting) {
-	if (s && strEQ(mg->mg_ptr,"PATH")) {
+	MgTAINTEDDIR_off(mg);
+#ifdef VMS
+	if (s && klen == 8 && strEQ(ptr, "DCL$PATH")) {
+	    char pathbuf[256], eltbuf[256], *cp, *elt = s;
+	    struct stat sbuf;
+	    int i = 0, j = 0;
+
+	    do {          /* DCL$PATH may be a search list */
+		while (1) {   /* as may dev portion of any element */
+		    if ( ((cp = strchr(elt,'[')) || (cp = strchr(elt,'<'))) ) {
+			if ( *(cp+1) == '.' || *(cp+1) == '-' ||
+			     cando_by_name(S_IWUSR,0,elt) ) {
+			    MgTAINTEDDIR_on(mg);
+			    return 0;
+			}
+		    }
+		    if ((cp = strchr(elt, ':')) != Nullch)
+			*cp = '\0';
+		    if (my_trnlnm(elt, eltbuf, j++))
+			elt = eltbuf;
+		    else
+			break;
+		}
+		j = 0;
+	    } while (my_trnlnm(s, pathbuf, i++) && (elt = pathbuf));
+	}
+#endif /* VMS */
+	if (s && klen == 4 && strEQ(ptr,"PATH")) {
 	    char *strend = s + len;
 
 	    while (s < strend) {
-		s = cpytill(tokenbuf,s,strend,':',&i);
+		char tmpbuf[256];
+		struct stat st;
+		s = delimcpy(tmpbuf, tmpbuf + sizeof tmpbuf,
+			     s, strend, ':', &i);
 		s++;
-		if (*tokenbuf != '/'
-		  || (Stat(tokenbuf,&statbuf) && (statbuf.st_mode & 2)) )
+		if (i >= sizeof tmpbuf   /* too long -- assume the worst */
+		      || *tmpbuf != '/'
+		      || (PerlLIO_stat(tmpbuf, &st) == 0 && (st.st_mode & 2)) ) {
 		    MgTAINTEDDIR_on(mg);
+		    return 0;
+		}
 	    }
 	}
     }
+#endif /* neither OS2 nor AMIGAOS nor WIN32 nor MSDOS */
+
     return 0;
 }
 
 int
-magic_clearenv(sv,mg)
-SV* sv;
-MAGIC* mg;
+magic_clearenv(SV *sv, MAGIC *mg)
 {
-    my_setenv(mg->mg_ptr,Nullch);
+    my_setenv(MgPV(mg,na),Nullch);
     return 0;
 }
 
-#ifdef HAS_SIGACTION
-/* set up reliable signal() clone */
-
-typedef void (*Sigfunc) _((int));
-
-static
-Sigfunc rsignal(signo,handler)
-int signo;
-Sigfunc handler;
+int
+magic_set_all_env(SV *sv, MAGIC *mg)
 {
-    struct sigaction act,oact;
-    
-    act.sa_handler = handler;
-    sigemptyset(&act.sa_mask);
-    act.sa_flags = 0;
-#ifdef SIGALRM    
-    if (signo == SIGALRM) {
+#if defined(VMS)
+    die("Can't make list assignment to %%ENV on this system");
 #else
-    if (0) {
-#endif        
-#ifdef SA_INTERRUPT
-	act.sa_flags |= SA_INTERRUPT;	/* SunOS */
-#endif	
-    } else {
-#ifdef SA_RESTART
-	act.sa_flags |= SA_RESTART;	/* SVR4, 4.3+BSD */
-#endif
+    dTHR;
+    if (localizing) {
+	HE* entry;
+	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), na));
+	}
     }
-    if (sigaction(signo, &act, &oact) < 0)
-    	return(SIG_ERR);
-    else
-    	return(oact.sa_handler);
+#endif
+    return 0;
 }
 
+int
+magic_clear_all_env(SV *sv, MAGIC *mg)
+{
+#if defined(VMS)
+    die("Can't make list assignment to %%ENV on this system");
 #else
+#ifdef WIN32
+    char *envv = GetEnvironmentStrings();
+    char *cur = envv;
+    STRLEN len;
+    while (*cur) {
+	char *end = strchr(cur,'=');
+	if (end && end != cur) {
+	    *end = '\0';
+	    my_setenv(cur,Nullch);
+	    *end = '=';
+	    cur += strlen(end+1)+1;
+	}
+	else if ((len = strlen(cur)))
+	    cur += len+1;
+    }
+    FreeEnvironmentStrings(envv);
+#else
+    I32 i;
 
-/* ah well, so much for reliability */
-
-#define rsignal(x,y) signal(x,y)
+    if (environ == origenviron)
+	New(901, environ, 1, char*);
+    else
+	for (i = 0; environ[i]; i++)
+	    Safefree(environ[i]);
+    environ[0] = Nullch;
 
 #endif
+#endif
+    return 0;
+}
 
+int
+magic_getsig(SV *sv, MAGIC *mg)
+{
+    I32 i;
+    /* Are we fetching a signal entry? */
+    i = whichsig(MgPV(mg,na));
+    if (i) {
+    	if(psig_ptr[i])
+    	    sv_setsv(sv,psig_ptr[i]);
+    	else {
+    	    Sighandler_t sigstate = rsignal_state(i);
+
+    	    /* cache state so we don't fetch it again */
+    	    if(sigstate == SIG_IGN)
+    	    	sv_setpv(sv,"IGNORE");
+    	    else
+    	    	sv_setsv(sv,&sv_undef);
+    	    psig_ptr[i] = SvREFCNT_inc(sv);
+    	    SvTEMP_off(sv);
+    	}
+    }
+    return 0;
+}
+int
+magic_clearsig(SV *sv, MAGIC *mg)
+{
+    I32 i;
+    /* Are we clearing a signal entry? */
+    i = whichsig(MgPV(mg,na));
+    if (i) {
+    	if(psig_ptr[i]) {
+    	    SvREFCNT_dec(psig_ptr[i]);
+    	    psig_ptr[i]=0;
+    	}
+    	if(psig_name[i]) {
+    	    SvREFCNT_dec(psig_name[i]);
+    	    psig_name[i]=0;
+    	}
+    }
+    return 0;
+}
 
 int
-magic_setsig(sv,mg)
-SV* sv;
-MAGIC* mg;
+magic_setsig(SV *sv, MAGIC *mg)
 {
+    dTHR;
     register char *s;
     I32 i;
     SV** svp;
 
-    s = mg->mg_ptr;
+    s = MgPV(mg,na);
     if (*s == '_') {
 	if (strEQ(s,"__DIE__"))
 	    svp = &diehook;
@@ -641,10 +852,16 @@ MAGIC* mg;
 		warn("No such signal: SIG%s", s);
 	    return 0;
 	}
+	SvREFCNT_dec(psig_name[i]);
+	SvREFCNT_dec(psig_ptr[i]);
+	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]);
     }
     if (SvTYPE(sv) == SVt_PVGV || SvROK(sv)) {
 	if (i)
-	    (void)rsignal(i,sighandler);
+	    (void)rsignal(i, sighandlerp);
 	else
 	    *svp = SvREFCNT_inc(sv);
 	return 0;
@@ -652,23 +869,26 @@ MAGIC* mg;
     s = SvPV_force(sv,na);
     if (strEQ(s,"IGNORE")) {
 	if (i)
-	    (void)rsignal(i,SIG_IGN);
+	    (void)rsignal(i, SIG_IGN);
 	else
 	    *svp = 0;
     }
     else if (strEQ(s,"DEFAULT") || !*s) {
 	if (i)
-	    (void)rsignal(i,SIG_DFL);
+	    (void)rsignal(i, SIG_DFL);
 	else
 	    *svp = 0;
     }
     else {
-	if (!strchr(s,':') && !strchr(s,'\'')) {
-	    sprintf(tokenbuf, "main::%s",s);
-	    sv_setpv(sv,tokenbuf);
-	}
+	/*
+	 * We should warn if HINT_STRICT_REFS, but without
+	 * access to a known hint bit in a known OP, we can't
+	 * tell whether HINT_STRICT_REFS is in force or not.
+	 */
+	if (!strchr(s,':') && !strchr(s,'\''))
+	    sv_setpv(sv, form("main::%s", s));
 	if (i)
-	    (void)rsignal(i,sighandler);
+	    (void)rsignal(i, sighandlerp);
 	else
 	    *svp = SvREFCNT_inc(sv);
     }
@@ -676,9 +896,7 @@ MAGIC* mg;
 }
 
 int
-magic_setisa(sv,mg)
-SV* sv;
-MAGIC* mg;
+magic_setisa(SV *sv, MAGIC *mg)
 {
     sub_generation++;
     return 0;
@@ -687,9 +905,7 @@ MAGIC* mg;
 #ifdef OVERLOAD
 
 int
-magic_setamagic(sv,mg)
-SV* sv;
-MAGIC* mg;
+magic_setamagic(SV *sv, MAGIC *mg)
 {
     /* HV_badAMAGIC_on(Sv_STASH(sv)); */
     amagic_generation++;
@@ -698,37 +914,87 @@ MAGIC* mg;
 }
 #endif /* OVERLOAD */
 
-static int
-magic_methpack(sv,mg,meth)
-SV* sv;
-MAGIC* mg;
-char *meth;
+int
+magic_getnkeys(SV *sv, MAGIC *mg)
+{
+    HV *hv = (HV*)LvTARG(sv);
+    HE *entry;
+    I32 i = 0;
+
+    if (hv) {
+	(void) hv_iterinit(hv);
+	if (!SvRMAGICAL(hv) || !mg_find((SV*)hv,'P'))
+	    i = HvKEYS(hv);
+	else {
+	    /*SUPPRESS 560*/
+	    while (entry = hv_iternext(hv)) {
+		i++;
+	    }
+	}
+    }
+
+    sv_setiv(sv, (IV)i);
+    return 0;
+}
+
+int
+magic_setnkeys(SV *sv, MAGIC *mg)
+{
+    if (LvTARG(sv)) {
+	hv_ksplit((HV*)LvTARG(sv), SvIV(sv));
+    }
+    return 0;
+}          
+
+/* caller is responsible for stack switching/cleanup */
+STATIC int
+magic_methcall(MAGIC *mg, char *meth, I32 flags, int n, SV *val)
 {
     dSP;
 
-    ENTER;
-    SAVETMPS;
-    PUSHMARK(sp);
-    EXTEND(sp, 2);
+    PUSHMARK(SP);
+    EXTEND(SP, n);
     PUSHs(mg->mg_obj);
-    if (mg->mg_ptr)
-	PUSHs(sv_2mortal(newSVpv(mg->mg_ptr, mg->mg_len)));
-    else if (mg->mg_type == 'p')
-	PUSHs(sv_2mortal(newSViv(mg->mg_len)));
+    if (n > 1) { 
+	if (mg->mg_ptr) {
+	    if (mg->mg_len >= 0)
+		PUSHs(sv_2mortal(newSVpv(mg->mg_ptr, mg->mg_len)));
+	    else if (mg->mg_len == HEf_SVKEY)
+		PUSHs((SV*)mg->mg_ptr);
+	}
+	else if (mg->mg_type == 'p') {
+	    PUSHs(sv_2mortal(newSViv(mg->mg_len)));
+	}
+    }
+    if (n > 2) {
+	PUSHs(val);
+    }
     PUTBACK;
 
-    if (perl_call_method(meth, G_SCALAR))
+    return perl_call_method(meth, flags);
+}
+
+STATIC int
+magic_methpack(SV *sv, MAGIC *mg, char *meth)
+{
+    dSP;
+
+    ENTER;
+    SAVETMPS;
+    PUSHSTACKi(PERLSI_MAGIC);
+
+    if (magic_methcall(mg, meth, G_SCALAR, 2, NULL)) {
 	sv_setsv(sv, *stack_sp--);
+    }
 
+    POPSTACK;
     FREETMPS;
     LEAVE;
     return 0;
 }
 
 int
-magic_getpack(sv,mg)
-SV* sv;
-MAGIC* mg;
+magic_getpack(SV *sv, MAGIC *mg)
 {
     magic_methpack(sv,mg,"FETCH");
     if (mg->mg_ptr)
@@ -737,63 +1003,69 @@ MAGIC* mg;
 }
 
 int
-magic_setpack(sv,mg)
-SV* sv;
-MAGIC* mg;
+magic_setpack(SV *sv, MAGIC *mg)
 {
     dSP;
-
-    PUSHMARK(sp);
-    EXTEND(sp, 3);
-    PUSHs(mg->mg_obj);
-    if (mg->mg_ptr)
-	PUSHs(sv_2mortal(newSVpv(mg->mg_ptr, mg->mg_len)));
-    else if (mg->mg_type == 'p')
-	PUSHs(sv_2mortal(newSViv(mg->mg_len)));
-    PUSHs(sv);
-    PUTBACK;
-
-    perl_call_method("STORE", G_SCALAR|G_DISCARD);
-
+    ENTER;
+    PUSHSTACKi(PERLSI_MAGIC);
+    magic_methcall(mg, "STORE", G_SCALAR|G_DISCARD, 3, sv);
+    POPSTACK;
+    LEAVE;
     return 0;
 }
 
 int
-magic_clearpack(sv,mg)
-SV* sv;
-MAGIC* mg;
+magic_clearpack(SV *sv, MAGIC *mg)
 {
     return magic_methpack(sv,mg,"DELETE");
 }
 
-int magic_wipepack(sv,mg)
-SV* sv;
-MAGIC* mg;
+
+U32
+magic_sizepack(SV *sv, MAGIC *mg)
+{         
+    dSP;
+    U32 retval = 0;
+
+    ENTER;
+    SAVETMPS;
+    PUSHSTACKi(PERLSI_MAGIC);
+    if (magic_methcall(mg, "FETCHSIZE", G_SCALAR, 2, NULL)) {
+	sv = *stack_sp--;
+	retval = (U32) SvIV(sv)-1;
+    }
+    POPSTACK;
+    FREETMPS;
+    LEAVE;
+    return retval;
+}
+
+int magic_wipepack(SV *sv, MAGIC *mg)
 {
     dSP;
 
-    PUSHMARK(sp);
+    ENTER;
+    PUSHSTACKi(PERLSI_MAGIC);
+    PUSHMARK(SP);
     XPUSHs(mg->mg_obj);
     PUTBACK;
-
     perl_call_method("CLEAR", G_SCALAR|G_DISCARD);
-
+    POPSTACK;
+    LEAVE;
     return 0;
 }
 
 int
-magic_nextpack(sv,mg,key)
-SV* sv;
-MAGIC* mg;
-SV* key;
+magic_nextpack(SV *sv, MAGIC *mg, SV *key)
 {
     dSP;
     char *meth = SvOK(key) ? "NEXTKEY" : "FIRSTKEY";
 
     ENTER;
     SAVETMPS;
-    PUSHMARK(sp);
-    EXTEND(sp, 2);
+    PUSHSTACKi(PERLSI_MAGIC);
+    PUSHMARK(SP);
+    EXTEND(SP, 2);
     PUSHs(mg->mg_obj);
     if (SvOK(key))
 	PUSHs(key);
@@ -802,24 +1074,22 @@ SV* key;
     if (perl_call_method(meth, G_SCALAR))
 	sv_setsv(key, *stack_sp--);
 
+    POPSTACK;
     FREETMPS;
     LEAVE;
     return 0;
 }
 
 int
-magic_existspack(sv,mg)
-SV* sv;
-MAGIC* mg;
+magic_existspack(SV *sv, MAGIC *mg)
 {
     return magic_methpack(sv,mg,"EXISTS");
 } 
 
 int
-magic_setdbline(sv,mg)
-SV* sv;
-MAGIC* mg;
+magic_setdbline(SV *sv, MAGIC *mg)
 {
+    dTHR;
     OP *o;
     I32 i;
     GV* gv;
@@ -827,7 +1097,8 @@ MAGIC* mg;
 
     gv = DBline;
     i = SvTRUE(sv);
-    svp = av_fetch(GvAV(gv),atoi(mg->mg_ptr), FALSE);
+    svp = av_fetch(GvAV(gv),
+		     atoi(MgPV(mg,na)), FALSE);
     if (svp && SvIOKp(*svp) && (o = (OP*)SvSTASH(*svp)))
 	o->op_private = i;
     else
@@ -836,33 +1107,30 @@ MAGIC* mg;
 }
 
 int
-magic_getarylen(sv,mg)
-SV* sv;
-MAGIC* mg;
+magic_getarylen(SV *sv, MAGIC *mg)
 {
+    dTHR;
     sv_setiv(sv, AvFILL((AV*)mg->mg_obj) + curcop->cop_arybase);
     return 0;
 }
 
 int
-magic_setarylen(sv,mg)
-SV* sv;
-MAGIC* mg;
+magic_setarylen(SV *sv, MAGIC *mg)
 {
+    dTHR;
     av_fill((AV*)mg->mg_obj, SvIV(sv) - curcop->cop_arybase);
     return 0;
 }
 
 int
-magic_getpos(sv,mg)
-SV* sv;
-MAGIC* mg;
+magic_getpos(SV *sv, MAGIC *mg)
 {
     SV* lsv = LvTARG(sv);
     
     if (SvTYPE(lsv) >= SVt_PVMG && SvMAGIC(lsv)) {
 	mg = mg_find(lsv, 'g');
 	if (mg && mg->mg_len >= 0) {
+	    dTHR;
 	    sv_setiv(sv, mg->mg_len + curcop->cop_arybase);
 	    return 0;
 	}
@@ -872,9 +1140,7 @@ MAGIC* mg;
 }
 
 int
-magic_setpos(sv,mg)
-SV* sv;
-MAGIC* mg;
+magic_setpos(SV *sv, MAGIC *mg)
 {
     SV* lsv = LvTARG(sv);
     SSize_t pos;
@@ -896,7 +1162,7 @@ MAGIC* mg;
     }
     len = SvPOK(lsv) ? SvCUR(lsv) : sv_len(lsv);
 
-    pos = SvIV(sv) - curcop->cop_arybase;
+    WITH_THR(pos = SvIV(sv) - curcop->cop_arybase);
     if (pos < 0) {
 	pos += len;
 	if (pos < 0)
@@ -905,23 +1171,26 @@ MAGIC* mg;
     else if (pos > len)
 	pos = len;
     mg->mg_len = pos;
+    mg->mg_flags &= ~MGf_MINMATCH;
 
     return 0;
 }
 
 int
-magic_getglob(sv,mg)
-SV* sv;
-MAGIC* mg;
+magic_getglob(SV *sv, MAGIC *mg)
 {
-    gv_efullname(sv,((GV*)sv));/* a gv value, be nice */
+    if (SvFAKE(sv)) {			/* FAKE globs can get coerced */
+	SvFAKE_off(sv);
+	gv_efullname3(sv,((GV*)sv), "*");
+	SvFAKE_on(sv);
+    }
+    else
+	gv_efullname3(sv,((GV*)sv), "*");	/* a gv value, be nice */
     return 0;
 }
 
 int
-magic_setglob(sv,mg)
-SV* sv;
-MAGIC* mg;
+magic_setglob(SV *sv, MAGIC *mg)
 {
     register char *s;
     GV* gv;
@@ -935,21 +1204,30 @@ MAGIC* mg;
     if (sv == (SV*)gv)
 	return 0;
     if (GvGP(sv))
-	gp_free(sv);
+	gp_free((GV*)sv);
     GvGP(sv) = gp_ref(GvGP(gv));
-    if (!GvAV(gv))
-	gv_AVadd(gv);
-    if (!GvHV(gv))
-	gv_HVadd(gv);
-    if (!GvIOp(gv))
-	GvIOp(gv) = newIO();
     return 0;
 }
 
 int
-magic_setsubstr(sv,mg)
-SV* sv;
-MAGIC* mg;
+magic_getsubstr(SV *sv, MAGIC *mg)
+{
+    STRLEN len;
+    SV *lsv = LvTARG(sv);
+    char *tmps = SvPV(lsv,len);
+    I32 offs = LvTARGOFF(sv);
+    I32 rem = LvTARGLEN(sv);
+
+    if (offs > len)
+	offs = len;
+    if (rem + offs > len)
+	rem = len - offs;
+    sv_setpvn(sv, tmps + offs, (STRLEN)rem);
+    return 0;
+}
+
+int
+magic_setsubstr(SV *sv, MAGIC *mg)
 {
     STRLEN len;
     char *tmps = SvPV(sv,len);
@@ -958,22 +1236,18 @@ MAGIC* mg;
 }
 
 int
-magic_gettaint(sv,mg)
-SV* sv;
-MAGIC* mg;
+magic_gettaint(SV *sv, MAGIC *mg)
 {
-    if (mg->mg_len & 1)
-	tainted = TRUE;
-    else if (mg->mg_len & 2 && mg->mg_obj == sv)	/* kludge */
-	tainted = TRUE;
+    dTHR;
+    TAINT_IF((mg->mg_len & 1) ||
+	     (mg->mg_len & 2) && mg->mg_obj == sv);	/* kludge */
     return 0;
 }
 
 int
-magic_settaint(sv,mg)
-SV* sv;
-MAGIC* mg;
+magic_settaint(SV *sv, MAGIC *mg)
 {
+    dTHR;
     if (localizing) {
 	if (localizing == 1)
 	    mg->mg_len <<= 1;
@@ -988,18 +1262,166 @@ MAGIC* mg;
 }
 
 int
-magic_setvec(sv,mg)
-SV* sv;
-MAGIC* mg;
+magic_getvec(SV *sv, MAGIC *mg)
+{
+    SV *lsv = LvTARG(sv);
+    unsigned char *s;
+    unsigned long retnum;
+    STRLEN lsvlen;
+    I32 len;
+    I32 offset;
+    I32 size;
+
+    if (!lsv) {
+	SvOK_off(sv);
+	return 0;
+    }
+    s = (unsigned char *) SvPV(lsv, lsvlen);
+    offset = LvTARGOFF(sv);
+    size = LvTARGLEN(sv);
+    len = (offset + size + 7) / 8;
+
+    /* Copied from pp_vec() */
+
+    if (len > lsvlen) {
+	if (size <= 8)
+	    retnum = 0;
+	else {
+	    offset >>= 3;
+	    if (size == 16) {
+		if (offset >= lsvlen)
+		    retnum = 0;
+		else
+		    retnum = (unsigned long) s[offset] << 8;
+	    }
+	    else if (size == 32) {
+		if (offset >= lsvlen)
+		    retnum = 0;
+		else if (offset + 1 >= lsvlen)
+		    retnum = (unsigned long) s[offset] << 24;
+		else if (offset + 2 >= lsvlen)
+		    retnum = ((unsigned long) s[offset] << 24) +
+			((unsigned long) s[offset + 1] << 16);
+		else
+		    retnum = ((unsigned long) s[offset] << 24) +
+			((unsigned long) s[offset + 1] << 16) +
+			(s[offset + 2] << 8);
+	    }
+	}
+    }
+    else if (size < 8)
+	retnum = (s[offset >> 3] >> (offset & 7)) & ((1 << size) - 1);
+    else {
+	offset >>= 3;
+	if (size == 8)
+	    retnum = s[offset];
+	else if (size == 16)
+	    retnum = ((unsigned long) s[offset] << 8) + s[offset+1];
+	else if (size == 32)
+	    retnum = ((unsigned long) s[offset] << 24) +
+		((unsigned long) s[offset + 1] << 16) +
+		(s[offset + 2] << 8) + s[offset+3];
+    }
+
+    sv_setuv(sv, (UV)retnum);
+    return 0;
+}
+
+int
+magic_setvec(SV *sv, MAGIC *mg)
 {
     do_vecset(sv);	/* XXX slurp this routine */
     return 0;
 }
 
 int
-magic_setmglob(sv,mg)
-SV* sv;
-MAGIC* mg;
+magic_getdefelem(SV *sv, MAGIC *mg)
+{
+    SV *targ = Nullsv;
+    if (LvTARGLEN(sv)) {
+	if (mg->mg_obj) {
+	    HV* hv = (HV*)LvTARG(sv);
+	    HE* he = hv_fetch_ent(hv, mg->mg_obj, FALSE, 0);
+	    if (he)
+		targ = HeVAL(he);
+	}
+	else {
+	    AV* av = (AV*)LvTARG(sv);
+	    if ((I32)LvTARGOFF(sv) <= AvFILL(av))
+		targ = AvARRAY(av)[LvTARGOFF(sv)];
+	}
+	if (targ && targ != &sv_undef) {
+	    dTHR;		/* just for SvREFCNT_dec */
+	    /* somebody else defined it for us */
+	    SvREFCNT_dec(LvTARG(sv));
+	    LvTARG(sv) = SvREFCNT_inc(targ);
+	    LvTARGLEN(sv) = 0;
+	    SvREFCNT_dec(mg->mg_obj);
+	    mg->mg_obj = Nullsv;
+	    mg->mg_flags &= ~MGf_REFCOUNTED;
+	}
+    }
+    else
+	targ = LvTARG(sv);
+    sv_setsv(sv, targ ? targ : &sv_undef);
+    return 0;
+}
+
+int
+magic_setdefelem(SV *sv, MAGIC *mg)
+{
+    if (LvTARGLEN(sv))
+	vivify_defelem(sv);
+    if (LvTARG(sv)) {
+	sv_setsv(LvTARG(sv), sv);
+	SvSETMAGIC(LvTARG(sv));
+    }
+    return 0;
+}
+
+int
+magic_freedefelem(SV *sv, MAGIC *mg)
+{
+    SvREFCNT_dec(LvTARG(sv));
+    return 0;
+}
+
+void
+vivify_defelem(SV *sv)
+{
+    dTHR;			/* just for SvREFCNT_inc and SvREFCNT_dec*/
+    MAGIC* mg;
+    SV* value;
+
+    if (!LvTARGLEN(sv) || !(mg = mg_find(sv, 'y')))
+	return;
+    if (mg->mg_obj) {
+	HV* hv = (HV*)LvTARG(sv);
+	HE* he = hv_fetch_ent(hv, mg->mg_obj, TRUE, 0);
+	if (!he || (value = HeVAL(he)) == &sv_undef)
+	    croak(no_helem, SvPV(mg->mg_obj, na));
+    }
+    else {
+	AV* av = (AV*)LvTARG(sv);
+	if ((I32)LvTARGLEN(sv) < 0 && (I32)LvTARGOFF(sv) > AvFILL(av))
+	    LvTARG(sv) = Nullsv;	/* array can't be extended */
+	else {
+	    SV** svp = av_fetch(av, LvTARGOFF(sv), TRUE);
+	    if (!svp || (value = *svp) == &sv_undef)
+		croak(no_aelem, (I32)LvTARGOFF(sv));
+	}
+    }
+    (void)SvREFCNT_inc(value);
+    SvREFCNT_dec(LvTARG(sv));
+    LvTARG(sv) = value;
+    LvTARGLEN(sv) = 0;
+    SvREFCNT_dec(mg->mg_obj);
+    mg->mg_obj = Nullsv;
+    mg->mg_flags &= ~MGf_REFCOUNTED;
+}
+
+int
+magic_setmglob(SV *sv, MAGIC *mg)
 {
     mg->mg_len = -1;
     SvSCREAM_off(sv);
@@ -1007,9 +1429,7 @@ MAGIC* mg;
 }
 
 int
-magic_setbm(sv,mg)
-SV* sv;
-MAGIC* mg;
+magic_setbm(SV *sv, MAGIC *mg)
 {
     sv_unmagic(sv, 'B');
     SvVALID_off(sv);
@@ -1017,9 +1437,15 @@ MAGIC* mg;
 }
 
 int
-magic_setuvar(sv,mg)
-SV* sv;
-MAGIC* mg;
+magic_setfm(SV *sv, MAGIC *mg)
+{
+    sv_unmagic(sv, 'f');
+    SvCOMPILED_off(sv);
+    return 0;
+}
+
+int
+magic_setuvar(SV *sv, MAGIC *mg)
 {
     struct ufuncs *uf = (struct ufuncs *)mg->mg_ptr;
 
@@ -1029,10 +1455,34 @@ MAGIC* mg;
 }
 
 int
-magic_set(sv,mg)
-SV* sv;
-MAGIC* mg;
+magic_freeregexp(SV *sv, MAGIC *mg)
+{
+    regexp *re = (regexp *)mg->mg_obj;
+    ReREFCNT_dec(re);
+    return 0;
+}
+
+#ifdef USE_LOCALE_COLLATE
+int
+magic_setcollxfrm(SV *sv, MAGIC *mg)
+{
+    /*
+     * René Descartes said "I think not."
+     * and vanished with a faint plop.
+     */
+    if (mg->mg_ptr) {
+	Safefree(mg->mg_ptr);
+	mg->mg_ptr = NULL;
+	mg->mg_len = -1;
+    }
+    return 0;
+}
+#endif /* USE_LOCALE_COLLATE */
+
+int
+magic_set(SV *sv, MAGIC *mg)
 {
+    dTHR;
     register char *s;
     I32 i;
     STRLEN len;
@@ -1044,6 +1494,18 @@ MAGIC* mg;
 	debug = (SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv)) | 0x80000000;
 	DEBUG_x(dump_all());
 	break;
+    case '\005':  /* ^E */
+#ifdef VMS
+	set_vaxc_errno(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv));
+#else
+#ifdef WIN32
+	SetLastError( SvIV(sv) );
+#else
+	/* will anyone ever use this? */
+	SETERRNO(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv), 4);
+#endif
+#endif
+	break;
     case '\006':	/* ^F */
 	maxsysfd = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv);
 	break;
@@ -1058,18 +1520,23 @@ MAGIC* mg;
 	else
 	    inplace = Nullch;
 	break;
+    case '\017':	/* ^O */
+	if (osname)
+	    Safefree(osname);
+	if (SvOK(sv))
+	    osname = savepv(SvPV(sv,na));
+	else
+	    osname = Nullch;
+	break;
     case '\020':	/* ^P */
-	i = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv);
-	if (i != perldb) {
-	    if (perldb)
-		oldlastpm = curpm;
-	    else
-		curpm = oldlastpm;
-	}
-	perldb = i;
+	perldb = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv);
 	break;
     case '\024':	/* ^T */
+#ifdef BIG_TIME
+	basetime = (Time_t)(SvNOK(sv) ? SvNVX(sv) : sv_2nv(sv));
+#else
 	basetime = (Time_t)(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv));
+#endif
 	break;
     case '\027':	/* ^W */
 	dowarn = (bool)(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv));
@@ -1079,7 +1546,7 @@ MAGIC* mg;
 	    if (localizing == 1)
 		save_sptr((SV**)&last_in_gv);
 	}
-	else if (SvOK(sv))
+	else if (SvOK(sv) && GvIO(last_in_gv))
 	    IoLINES(GvIOp(last_in_gv)) = (long)SvIV(sv);
 	break;
     case '^':
@@ -1104,9 +1571,18 @@ MAGIC* mg;
 	IoPAGE(GvIOp(defoutgv)) = (long)(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv));
 	break;
     case '|':
-	IoFLAGS(GvIOp(defoutgv)) &= ~IOf_FLUSH;
-	if ((SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv)) != 0) {
-	    IoFLAGS(GvIOp(defoutgv)) |= IOf_FLUSH;
+	{
+	    IO *io = GvIOp(defoutgv);
+	    if ((SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv)) == 0)
+		IoFLAGS(io) &= ~IOf_FLUSH;
+	    else {
+		if (!(IoFLAGS(io) & IOf_FLUSH)) {
+		    PerlIO *ofp = IoOFP(io);
+		    if (ofp)
+			(void)PerlIO_flush(ofp);
+		    IoFLAGS(io) |= IOf_FLUSH;
+		}
+	    }
 	}
 	break;
     case '*':
@@ -1122,7 +1598,12 @@ MAGIC* mg;
     case '\\':
 	if (ors)
 	    Safefree(ors);
-	ors = savepv(SvPV(sv,orslen));
+	if (SvOK(sv) || SvGMAGICAL(sv))
+	    ors = savepv(SvPV(sv,orslen));
+	else {
+	    ors = Nullch;
+	    orslen = 0;
+	}
 	break;
     case ',':
 	if (ofs)
@@ -1138,10 +1619,23 @@ MAGIC* mg;
 	compiling.cop_arybase = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv);
 	break;
     case '?':
-	statusvalue = FIXSTATUS(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv));
+#ifdef COMPLEX_STATUS
+	if (localizing == 2) {
+	    statusvalue = LvTARGOFF(sv);
+	    statusvalue_vms = LvTARGLEN(sv);
+	}
+	else
+#endif
+#ifdef VMSISH_STATUS
+	if (VMSISH_STATUS)
+	    STATUS_NATIVE_SET((U32)(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv)));
+	else
+#endif
+	    STATUS_POSIX_SET(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv));
 	break;
     case '!':
-	SETERRNO(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv),4);		/* will anyone ever use this? */
+	SETERRNO(SvIOK(sv) ? SvIVX(sv) : SvOK(sv) ? sv_2iv(sv) : 0,
+		 (SvIV(sv) == EVMSERR) ? 4 : vaxc$errno);
 	break;
     case '<':
 	uid = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv);
@@ -1159,15 +1653,15 @@ MAGIC* mg;
       (void)setresuid((Uid_t)uid, (Uid_t)-1, (Uid_t)-1);
 #else
 	if (uid == euid)		/* special case $< = $> */
-	    (void)setuid(uid);
+	    (void)PerlProc_setuid(uid);
 	else {
-	    uid = (I32)getuid();
+	    uid = (I32)PerlProc_getuid();
 	    croak("setruid() not implemented");
 	}
 #endif
 #endif
 #endif
-	uid = (I32)getuid();
+	uid = (I32)PerlProc_getuid();
 	tainting |= (uid && (euid != uid || egid != gid));
 	break;
     case '>':
@@ -1186,15 +1680,15 @@ MAGIC* mg;
 	(void)setresuid((Uid_t)-1, (Uid_t)euid, (Uid_t)-1);
 #else
 	if (euid == uid)		/* special case $> = $< */
-	    setuid(euid);
+	    PerlProc_setuid(euid);
 	else {
-	    euid = (I32)geteuid();
+	    euid = (I32)PerlProc_geteuid();
 	    croak("seteuid() not implemented");
 	}
 #endif
 #endif
 #endif
-	euid = (I32)geteuid();
+	euid = (I32)PerlProc_geteuid();
 	tainting |= (uid && (euid != uid || egid != gid));
 	break;
     case '(':
@@ -1213,19 +1707,42 @@ MAGIC* mg;
       (void)setresgid((Gid_t)gid, (Gid_t)-1, (Gid_t) 1);
 #else
 	if (gid == egid)			/* special case $( = $) */
-	    (void)setgid(gid);
+	    (void)PerlProc_setgid(gid);
 	else {
-	    gid = (I32)getgid();
+	    gid = (I32)PerlProc_getgid();
 	    croak("setrgid() not implemented");
 	}
 #endif
 #endif
 #endif
-	gid = (I32)getgid();
+	gid = (I32)PerlProc_getgid();
 	tainting |= (uid && (euid != uid || egid != gid));
 	break;
     case ')':
+#ifdef HAS_SETGROUPS
+	{
+	    char *p = SvPV(sv, na);
+	    Groups_t gary[NGROUPS];
+
+	    SET_NUMERIC_STANDARD();
+	    while (isSPACE(*p))
+		++p;
+	    egid = I_V(atof(p));
+	    for (i = 0; i < NGROUPS; ++i) {
+		while (*p && !isSPACE(*p))
+		    ++p;
+		while (isSPACE(*p))
+		    ++p;
+		if (!*p)
+		    break;
+		gary[i] = I_V(atof(p));
+	    }
+	    if (i)
+		(void)setgroups(i, gary);
+	}
+#else  /* HAS_SETGROUPS */
 	egid = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv);
+#endif /* HAS_SETGROUPS */
 	if (delaymagic) {
 	    delaymagic |= DM_EGID;
 	    break;				/* don't do magic till later */
@@ -1240,15 +1757,15 @@ MAGIC* mg;
 	(void)setresgid((Gid_t)-1, (Gid_t)egid, (Gid_t)-1);
 #else
 	if (egid == gid)			/* special case $) = $( */
-	    (void)setgid(egid);
+	    (void)PerlProc_setgid(egid);
 	else {
-	    egid = (I32)getegid();
+	    egid = (I32)PerlProc_getegid();
 	    croak("setegid() not implemented");
 	}
 #endif
 #endif
 #endif
-	egid = (I32)getegid();
+	egid = (I32)PerlProc_getegid();
 	tainting |= (uid && (euid != uid || egid != gid));
 	break;
     case ':':
@@ -1260,15 +1777,28 @@ MAGIC* mg;
 	    s += strlen(s);
 	    /* See if all the arguments are contiguous in memory */
 	    for (i = 1; i < origargc; i++) {
-		if (origargv[i] == s + 1)
+		if (origargv[i] == s + 1
+#ifdef OS2
+		    || origargv[i] == s + 2
+#endif 
+		   )
 		    s += strlen(++s);	/* this one is ok too */
+		else
+		    break;
 	    }
-	    if (origenviron[0] == s + 1) {	/* can grab env area too? */
-		my_setenv("NoNeSuCh", Nullch);
+	    /* can grab env area too? */
+	    if (origenviron && (origenviron[0] == s + 1
+#ifdef OS2
+				|| (origenviron[0] == s + 9 && (s += 8))
+#endif 
+	       )) {
+		my_setenv("NoNe  SuCh", Nullch);
 					    /* force copy of environment */
 		for (i = 0; origenviron[i]; i++)
 		    if (origenviron[i] == s + 1)
 			s += strlen(++s);
+		    else
+			break;
 	    }
 	    origalen = s - origargv[0];
 	}
@@ -1276,9 +1806,11 @@ MAGIC* mg;
 	i = len;
 	if (i >= origalen) {
 	    i = origalen;
-	    SvCUR_set(sv, i);
-	    *SvEND(sv) = '\0';
+	    /* don't allow system to limit $0 seen by script */
+	    /* SvCUR_set(sv, i); *SvEND(sv) = '\0'; */
 	    Copy(s, origargv[0], i, char);
+	    s = origargv[0]+i;
+	    *s = '\0';
 	}
 	else {
 	    Copy(s, origargv[0], i, char);
@@ -1291,13 +1823,33 @@ MAGIC* mg;
 		origargv[i] = Nullch;
 	}
 	break;
+#ifdef USE_THREADS
+    case '@':
+	sv_setsv(thr->errsv, sv);
+	break;
+#endif /* USE_THREADS */
     }
     return 0;
 }
 
+#ifdef USE_THREADS
+int
+magic_mutexfree(SV *sv, MAGIC *mg)
+{
+    dTHR;
+    DEBUG_L(PerlIO_printf(PerlIO_stderr(), "0x%lx: magic_mutexfree 0x%lx\n",
+			  (unsigned long)thr, (unsigned long)sv);)
+    if (MgOWNER(mg))
+	croak("panic: magic_mutexfree");
+    MUTEX_DESTROY(MgMUTEXP(mg));
+    COND_DESTROY(MgCONDP(mg));
+    SvREFCNT_dec(sv);
+    return 0;
+}
+#endif /* USE_THREADS */
+
 I32
-whichsig(sig)
-char *sig;
+whichsig(char *sig)
 {
     register char **sigv;
 
@@ -1315,58 +1867,110 @@ char *sig;
     return 0;
 }
 
+static SV* sig_sv;
+
+STATIC void
+unwind_handler_stack(void *p)
+{
+    dTHR;
+    U32 flags = *(U32*)p;
+
+    if (flags & 1)
+	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(sig)
-int sig;
+sighandler(int sig)
 {
     dSP;
-    GV *gv;
+    GV *gv = Nullgv;
     HV *st;
-    SV *sv;
-    CV *cv;
-    AV *oldstack;
-    char *signame; 
-
-#ifdef OS2		/* or anybody else who requires SIG_ACK */
-    signal(sig, SIG_ACK);
-#endif
-
-    signame = sig_name[sig];
-    cv = sv_2cv(*hv_fetch(GvHVn(siggv),signame,strlen(signame),
-			  TRUE),
-		&st, &gv, TRUE);
-    if (!cv || !CvROOT(cv) &&
-	*signame == 'C' && instr(signame,"LD")) {
-	
-	if (signame[1] == 'H')
-	    cv = sv_2cv(*hv_fetch(GvHVn(siggv),"CLD",3,TRUE),
-			&st, &gv, TRUE);
-	else
-	    cv = sv_2cv(*hv_fetch(GvHVn(siggv),"CHLD",4,TRUE),
-			&st, &gv, TRUE);
-	/* gag */
+    SV *sv, *tSv = Sv;
+    CV *cv = Nullcv;
+    OP *myop = op;
+    U32 flags = 0;
+    I32 o_save_i = savestack_ix, type;
+    XPV *tXpv = Xpv;
+    
+    if (savestack_ix + 15 <= savestack_max)
+	flags |= 1;
+    if (markstack_ptr < markstack_max - 2)
+	flags |= 4;
+    if (retstack_ix < retstack_max - 2)
+	flags |= 8;
+    if (scopestack_ix < scopestack_max - 3)
+	flags |= 16;
+
+    if (!psig_ptr[sig])
+	die("Signal SIG%s received, but no signal handler set.\n",
+	    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): */
+    if (flags & 1) {
+	savestack_ix += 5;		/* Protect save in progress. */
+	o_save_i = savestack_ix;
+	SAVEDESTRUCTOR(unwind_handler_stack, (void*)&flags);
     }
+    if (flags & 4) 
+	markstack_ptr++;		/* Protect mark. */
+    if (flags & 8) {
+	retstack_ix++;
+	retstack[retstack_ix] = NULL;
+    }
+    if (flags & 16)
+	scopestack_ix += 1;
+    /* sv_2cv is too complicated, try a simpler variant first: */
+    if (!SvROK(psig_ptr[sig]) || !(cv = (CV*)SvRV(psig_ptr[sig])) 
+	|| SvTYPE(cv) != SVt_PVCV)
+	cv = sv_2cv(psig_ptr[sig],&st,&gv,TRUE);
+
     if (!cv || !CvROOT(cv)) {
 	if (dowarn)
 	    warn("SIG%s handler \"%s\" not defined.\n",
-		signame, GvENAME(gv) );
-	return;
+		sig_name[sig], (gv ? GvENAME(gv)
+				: ((cv && CvGV(cv))
+				   ? GvENAME(CvGV(cv))
+				   : "__ANON__")));
+	goto cleanup;
     }
 
-    oldstack = stack;
-    if (stack != signalstack)
-	AvFILL(signalstack) = 0;
-    SWITCHSTACK(stack, signalstack);
+    if(psig_name[sig]) {
+    	sv = SvREFCNT_inc(psig_name[sig]);
+	flags |= 64;
+	sig_sv = sv;
+    } else {
+	sv = sv_newmortal();
+	sv_setpv(sv,sig_name[sig]);
+    }
 
-    sv = sv_newmortal();
-    sv_setpv(sv,signame);
-    PUSHMARK(sp);
+    PUSHSTACKi(PERLSI_SIGNAL);
+    PUSHMARK(SP);
     PUSHs(sv);
     PUTBACK;
 
     perl_call_sv((SV*)cv, G_DISCARD);
 
-    SWITCHSTACK(signalstack, oldstack);
-
+    POPSTACK;
+cleanup:
+    if (flags & 1)
+	savestack_ix -= 8; /* Unprotect save in progress. */
+    if (flags & 4) 
+	markstack_ptr--;
+    if (flags & 8) 
+	retstack_ix--;
+    if (flags & 16)
+	scopestack_ix -= 1;
+    if (flags & 64)
+	SvREFCNT_dec(sv);
+    op = myop;			/* Apparently not needed... */
+    
+    Sv = tSv;			/* Restore global temporaries. */
+    Xpv = tXpv;
     return;
 }
+
+