[inseparable changes from patch from perl5.003_11 to perl5.003_12]

 CORE LANGUAGE CHANGES

Subject: Support C<delete @hash{@keys}>
From: Chip Salzenberg <chip@atlantic.net>
Files: op.c op.h opcode.pl pod/perldiag.pod pod/perlfunc.pod pp.c t/op/delete.t

Subject: Autovivify scalars
From: Chip Salzenberg <chip@atlantic.net>
Files: dump.c op.c op.h pp.c pp_hot.c

 DOCUMENTATION

Subject: Update pods: perldelta -> perlnews, perli18n -> perllocale
From: Tom Christiansen <tchrist@perl.com>
Files: MANIFEST pod/perl.pod pod/perldelta.pod pod/perli18n.pod pod/perlnews.pod

Subject: perltoot.pod
Date: Mon, 09 Dec 1996 07:44:10 -0700
From: Tom Christiansen <tchrist@mox.perl.com>
Files: MANIFEST pod/perltoot.pod
Msg-ID: <199612091444.HAA09947@toy.perl.com>

    (applied based on p5p patch as commit 32e22efaa9ec59b73a208b6c532a0b435e2c6462)

Subject: Perlguts, version 25
Date: Fri, 6 Dec 96 11:40:27 PST
From: Jeff Okamoto <okamoto@hpcc123.corp.hp.com>
Files: pod/perlguts.pod

    private-msgid: <199612061940.AA055461228@hpcc123.corp.hp.com>

Subject: pod patches for English errors
Date: Mon, 09 Dec 1996 13:33:11 -0800
From: Steve Kelem <steve.kelem@xilinx.com>
Files: pod/*.pod
Msg-ID: <24616.850167191@castor>

    (applied based on p5p patch as commit 0135f10892ed8a21c4dbd1fca21fbcc365df99dd)

Subject: Misc doc updates
Date: Sat, 14 Dec 1996 18:56:33 -0700
From: Tom Christiansen <tchrist@mox.perl.com>
Files: pod/*

    Subject: Re: perldelta.pod 
    
    Here are some diffs to the _11 pods.  I forgot to add perldelta to
    perl.pod though.
    
    And *PLEASE* fix the Artistic License so it no longer has the bogus
    "whomever" misdeclined in the nominative case:
    
        under the copyright of this Package, but belong to whomever generated
        them, and may be sold commercially, and may be aggregated with this
    
    It should obviously be "whoever".
    
    p5p-msgid: <199612150156.SAA12506@mox.perl.com>

 OTHER CORE CHANGES

Subject: Allow assignment to empty array values during foreach()
From: Chip Salzenberg <chip@atlantic.net>
Files: cop.h global.sym mg.c op.c perl.h pp_hot.c proto.h sv.c

Subject: Fix nested closures
From: Chip Salzenberg <chip@atlantic.net>
Files: op.c opcode.pl pp.c pp_ctl.c pp_hot.c

Subject: Fix core dump on auto-vivification
From: Chip Salzenberg <chip@atlantic.net>
Files: pp_hot.c

Subject: Fix core dump on C<open $undef_var, "X">
From: Chip Salzenberg <chip@atlantic.net>
Files: pp_sys.c

Subject: Fix -T/-B on globs and globrefs
From: Chip Salzenberg <chip@atlantic.net>
Files: pp_sys.c

Subject: Fix memory management of $`, $&, and $'
From: Chip Salzenberg <chip@atlantic.net>
Files: pp_hot.c regexec.c

Subject: Fix paren matching during backtracking
From: Chip Salzenberg <chip@atlantic.net>
Files: regexec.c

Subject: Fix memory leak and std{in,out,err} death in perl_{con,de}str
From: Chip Salzenberg <chip@atlantic.net>
Files: miniperlmain.c perl.c perl.h sv.c

Subject: Discard garbage bytes at end of prototype()
From: Chip Salzenberg <chip@atlantic.net>
Files: pp.c

Subject: Fix local($pack::{foo})
From: Chip Salzenberg <chip@atlantic.net>
Files: global.sym pp.c pp_hot.c proto.h scope.c

Subject: Disable warn, die, and parse hooks _before_ global destruction
From: Chip Salzenberg <chip@atlantic.net>
Files: perl.c

Subject: Re: Bug in formline 
Date: Sun, 08 Dec 1996 14:58:32 -0500
From: Gurusamy Sarathy <gsar@engin.umich.edu>
Files: pp_ctl.c
Msg-ID: <199612081958.OAA26025@aatma.engin.umich.edu>

    (applied based on p5p patch as commit b386bda18108ba86d0b76ebe2d8745eafa80f39e)

Subject: Fix C<@a = ($a,$b,$c,$d) = (1,2)>
From: Chip Salzenberg <chip@atlantic.net>
Files: pp_hot.c

Subject: Properly support and document newRV{,_inc,_noinc}
From: Chip Salzenberg <chip@atlantic.net>
Files: global.sym pod/perlguts.pod sv.c sv.h

Subject: Allow lvalue pos inside recursive function
From: Chip Salzenberg <chip@atlantic.net>
Files: op.c pp.c pp_ctl.c pp_hot.c

 PORTABILITY

Subject: Make $privlib contents compatible with 5.003
From: Chip Salzenberg <chip@atlantic.net>
Files: INSTALL ext/Opcode/Safe.pm installperl lib/FileHandle.pm lib/Test/Harness.pm

Subject: Support $bincompat3 config variable; update metaconfig units
From: Chip Salzenberg <chip@atlantic.net>
Files: Configure MANIFEST compat3.sym config_h.SH embed.pl global.sym old_embed.pl old_global.sym old_perl_exp.SH perl_exp.SH

Subject: Look for gettimeofday() in Configure
Date: Wed, 11 Dec 1996 15:49:57 +0100
From: John Hughes <john@AtlanTech.COM>
Files: Configure config_H config_h.SH pp.c

    Subject: perl5.003_11, Should base use of gettimeofday on HAS_GETTIMEOFDAY, not I_SYS_TIME
    
    I've been installing perl5.003_11 on a SCO system that has the TCP/IP runtime
    installed but not the TCP/IP development system.
    
    Unfortunately the <sys/time.h> include file is included in the TCP/IP runtime
    while libsocket.a is in the development system.
    
    This means that pp.c decides to use "gettimeofday" because <sys/time.h> is
    present but I can't link the perl that gets compiled.
    
    So, here's a patch to base the use of "gettimeofday" on "HAS_GETTIMEOFDAY"
    instead of "I_SYS_TIME".  I also took the liberty of removing the special
    case for plan9 (I assume plan9 has <sys/time.h> but no gettimeofday.  Am I
    right?).
    
    p5p-msgid: <01BBE77A.F6F37F80@malvinas.AtlanTech.COM>

Subject: Make $startperl a relative path if people want portable scrip
From: Chip Salzenberg <chip@atlantic.net>
Files: Configure

Subject: Homogenize use of "eval exec" hack
From: Chip Salzenberg <chip@atlantic.net>
Files: Porting/Glossary eg/README eg/nih eg/sysvipc/ipcmsg eg/sysvipc/ipcsem eg/sysvipc/ipcshm lib/diagnostics.pm makeaperl.SH pod/checkpods.PL pod/perlrun.pod pod/pod2html.PL pod/pod2latex.PL pod/pod2man.PL pod/pod2text.PL utils/c2ph.PL utils/h2ph.PL utils/h2xs.PL utils/perlbug.PL utils/perldoc.PL utils/pl2pm.PL x2p/a2py.c x2p/find2perl.PL x2p/s2p.PL

Subject: LynxOS support
Date: Thu, 12 Dec 1996 09:25:00 PST
From: Greg Seibert <seibert@Lynx.COM>
Files: Configure MANIFEST hints/lynxos.sh t/op/stat.t
Msg-ID: <m0vYEsY-0000IZC@kzinti.lynx.com>

    (applied based on p5p patch as commit 6693373533b15e559fd8f0f1877e5e6ec15483cc)

Subject: Re: db-recno.t failures with _11 on Freebsd 2.1-stable
Date: 11 Dec 1996 18:58:56 -0500
From: Roderick Schertler <roderick@gate.net>
Files: INSTALL hints/freebsd.sh
Msg-ID: <pzohg0r5tr.fsf@eeyore.ibcinc.com>

    (applied based on p5p patch as commit 10e40321ee752c58e3407b204c74c8049894cb51)

Subject: VMS patches to 5.003_11
Date: Mon, 09 Dec 1996 23:16:10 -0500 (EST)
From: Charles Bailey <bailey@HMIVAX.HUMGEN.UPENN.EDU>
Files: MANIFEST regexec.c t/lib/filehand.t util.c vms/*

    private-msgid: <01ICTR32LCZG001A1D@hmivax.humgen.upenn.edu>

 TESTING

Subject: recurse recurse recurse ...
Date: Mon, 9 Dec 1996 23:44:27 +0200 (EET)
From: Jarkko Hietaniemi <jhi@cc.hut.fi>
Files: MANIFEST t/op/recurse.t

    private-msgid: <199612092144.XAA29025@alpha.hut.fi>

 UTILITIES, LIBRARY, AND EXTENSIONS

Subject: Add CPAN and Net::FTP
From: Chip Salzenberg <chip@atlantic.net>
Files: MANIFEST lib/CPAN.pm lib/CPAN/FirstTime.pm lib/CPAN/Nox.pm lib/Net/FTP.pm lib/Net/Netrc.pm lib/Net/Socket.pm pod/perlmod.pod

Subject: Add File::Compare
Date: Mon, 16 Dec 1996 18:44:59 GMT
From: Nick Ing-Simmons <nik@tiuk.ti.com>
Files: MANIFEST lib/File/Compare.pm pod/perlmod.pod
Msg-ID: <199612161844.SAA02152@pluto>

    (applied based on p5p patch as commit ec971c5c328aca84fb827f69f2cc1dc3be81f830)

Subject: Add Tie::RefHash
Date: Sun, 15 Dec 1996 18:58:08 -0500
From: Gurusamy Sarathy <gsar@engin.umich.edu>
Files: MANIFEST lib/Tie/RefHash.pm pod/perlmod.pod
Msg-ID: <199612152358.SAA28665@aatma.engin.umich.edu>

    (applied based on p5p patch as commit 9a079709134ebbf4c935cc8752fdb564e5c82b94)

Subject: Put "splain" in utils.
From: Chip Salzenberg <chip@atlantic.net>
Files: Makefile.SH installperl utils/Makefile utils/splain.PL

Subject: Some h2ph fixes
Date: Fri, 13 Dec 1996 11:34:12 -0800
From: Jeff Okamoto <okamoto@hpcc123.corp.hp.com>
Files: utils/h2ph.PL

    Here is a message regarding changes to h2ph that should probably be folded
    into the 5.004 release.
    
    p5p-msgid: <199612131934.AA289845652@hpcc123.corp.hp.com>

1 files changed, 64 insertions, 27 deletions

diff --git a/pp_hot.c b/pp_hot.c
index 4b9ba00a09..fb28bfee83 100644
--- a/pp_hot.c
+++ b/pp_hot.c
@@ -217,7 +217,7 @@ PP(pp_padsv)
     if (op->op_flags & OPf_MOD) {
 	if (op->op_private & OPpLVAL_INTRO)
 	    SAVECLEARSV(curpad[op->op_targ]);
-        else if (op->op_private & (OPpDEREF_HV|OPpDEREF_AV))
+        else if (op->op_private & OPpDEREF)
 	    provide_ref(op, curpad[op->op_targ]);
     }
     RETURN;
@@ -725,6 +725,8 @@ PP(pp_aassign)
 	    SP = lastrelem;
 	else
 	    SP = firstrelem + (lastlelem - firstlelem);
+	while (relem <= SP)
+	    *relem++ = &sv_undef;
 	RETURN;
     }
     else {
@@ -786,7 +788,7 @@ PP(pp_match)
     }
     if (!rx->nparens && !global)
 	gimme = G_SCALAR;			/* accidental array context? */
-    safebase = (gimme == G_ARRAY) || global;
+    safebase = (((gimme == G_ARRAY) || global) && !sawampersand);
     if (pm->op_pmflags & (PMf_MULTILINE|PMf_SINGLELINE)) {
 	SAVEINT(multiline);
 	multiline = pm->op_pmflags & PMf_MULTILINE;
@@ -795,7 +797,7 @@ PP(pp_match)
 play_it_again:
     if (global && rx->startp[0]) {
 	t = s = rx->endp[0];
-	if (s > strend)
+	if (s >= strend)
 	    goto nope;
 	minmatch = (s == rx->startp[0]);
     }
@@ -868,6 +870,7 @@ play_it_again:
 	}
 	if (global) {
 	    truebase = rx->subbeg;
+	    strend = rx->subend;
 	    if (rx->startp[0] && rx->startp[0] == rx->endp[0])
 		++rx->endp[0];
 	    goto play_it_again;
@@ -885,7 +888,7 @@ play_it_again:
 		mg = mg_find(TARG, 'g');
 	    }
 	    if (rx->startp[0]) {
-		mg->mg_len = rx->endp[0] - truebase;
+		mg->mg_len = rx->endp[0] - rx->subbeg;
 		if (rx->startp[0] == rx->endp[0])
 		    mg->mg_flags |= MGf_MINMATCH;
 		else
@@ -903,6 +906,8 @@ yup:
     curpm = pm;
     if (pm->op_pmflags & PMf_ONCE)
 	pm->op_pmflags |= PMf_USED;
+    Safefree(rx->subbase);
+    rx->subbase = Nullch;
     if (global) {
 	rx->subbeg = truebase;
 	rx->subend = strend;
@@ -913,8 +918,6 @@ yup:
     if (sawampersand) {
 	char *tmps;
 
-	if (rx->subbase)
-	    Safefree(rx->subbase);
 	tmps = rx->subbase = savepvn(t, strend-t);
 	rx->subbeg = tmps;
 	rx->subend = tmps + (strend-t);
@@ -1234,9 +1237,13 @@ PP(pp_helem)
     if (lval) {
 	if (!he || HeVAL(he) == &sv_undef)
 	    DIE(no_helem, SvPV(keysv, na));
-	if (op->op_private & OPpLVAL_INTRO)
-	    save_svref(&HeVAL(he));
-	else if (op->op_private & (OPpDEREF_HV|OPpDEREF_AV))
+	if (op->op_private & OPpLVAL_INTRO) {
+	    if (HvNAME(hv) && isGV(HeVAL(he)))
+		save_gp((GV*)HeVAL(he), !(op->op_flags & OPf_SPECIAL));
+	    else
+		save_svref(&HeVAL(he));
+	}
+	else if (op->op_private & OPpDEREF)
 	    provide_ref(op, HeVAL(he));
     }
     PUSHs(he ? HeVAL(he) : &sv_undef);
@@ -1300,7 +1307,7 @@ PP(pp_iter)
 {
     dSP;
     register CONTEXT *cx;
-    SV *sv;
+    SV* sv;
     AV* av;
 
     EXTEND(sp, 1);
@@ -1314,13 +1321,26 @@ PP(pp_iter)
     if (cx->blk_loop.iterix >= AvFILL(av))
 	RETPUSHNO;
 
-    if (sv = AvARRAY(av)[++cx->blk_loop.iterix]) {
+    if (sv = AvARRAY(av)[++cx->blk_loop.iterix])
 	SvTEMP_off(sv);
-	*cx->blk_loop.itervar = sv;
-    }
     else
-	*cx->blk_loop.itervar = &sv_undef;
-
+	sv = &sv_undef;
+    if (av != curstack && SvIMMORTAL(sv)) {
+	SV *lv = cx->blk_loop.iterlval;
+	if (lv)
+	    SvREFCNT_dec(LvTARG(lv));
+	else {
+	    lv = cx->blk_loop.iterlval = newSVsv(sv);
+	    sv_upgrade(lv, SVt_PVLV);
+	    sv_magic(lv, Nullsv, 'y', Nullch, 0);
+	    LvTYPE(lv) = 'y';
+	}
+	LvTARG(lv) = SvREFCNT_inc(av);
+	LvTARGOFF(lv) = cx->blk_loop.iterix;
+	LvTARGLEN(lv) = 1;
+	sv = (SV*)lv;
+    }
+    *cx->blk_loop.itervar = sv;
     RETPUSHYES;
 }
 
@@ -1370,7 +1390,7 @@ PP(pp_subst)
 	pm = curpm;
 	rx = pm->op_pmregexp;
     }
-    safebase = ((!rx || !rx->nparens) && !sawampersand);
+    safebase = (!rx->nparens && !sawampersand);
     if (pm->op_pmflags & (PMf_MULTILINE|PMf_SINGLELINE)) {
 	SAVEINT(multiline);
 	multiline = pm->op_pmflags & PMf_MULTILINE;
@@ -1518,7 +1538,7 @@ PP(pp_subst)
     else
 	c = Nullch;
     if (pregexec(rx, s, strend, orig, 0,
-      SvSCREAM(TARG) ? TARG : Nullsv, safebase)) {
+		 SvSCREAM(TARG) ? TARG : Nullsv, safebase)) {
     long_way:
 	if (force_on_match) {
 	    force_on_match = 0;
@@ -1550,8 +1570,7 @@ PP(pp_subst)
 		sv_catpvn(dstr, c, clen);
 	    if (once)
 		break;
-	} while (pregexec(rx, s, strend, orig, s == m, Nullsv,
-	    safebase));
+	} while (pregexec(rx, s, strend, orig, s == m, Nullsv, safebase));
 	sv_catpvn(dstr, s, strend - s);
 
 	(void)SvOOK_off(TARG);
@@ -1831,7 +1850,8 @@ PP(pp_entersub)
 	if (CvDEPTH(cv) < 2)
 	    (void)SvREFCNT_inc(cv);
 	else {	/* save temporaries on recursion? */
-	    if (CvDEPTH(cv) == 100 && dowarn)
+	    if (CvDEPTH(cv) == 100 && dowarn 
+		&& !(perldb && cv == GvCV(DBsub)))
 		warn("Deep recursion on subroutine \"%s\"",GvENAME(CvGV(cv)));
 	    if (CvDEPTH(cv) > AvFILL(padlist)) {
 		AV *av;
@@ -1842,9 +1862,10 @@ PP(pp_entersub)
 		for ( ;ix > 0; ix--) {
 		    if (svp[ix] != &sv_undef) {
 			char *name = SvPVX(svp[ix]);
-			if (SvFLAGS(svp[ix]) & SVf_FAKE) { /* outer lexical? */
-			    av_store(newpad, ix,
-				SvREFCNT_inc(oldpad[ix]) );
+			if ((SvFLAGS(svp[ix]) & SVf_FAKE) /* outer lexical? */
+			    || *name == '&')		  /* anonymous code? */
+			{
+			    av_store(newpad, ix, SvREFCNT_inc(oldpad[ix]));
 			}
 			else {				/* our own lexical */
 			    if (*name == '@')
@@ -1929,7 +1950,7 @@ PP(pp_aelem)
 	    DIE(no_aelem, elem);
 	if (op->op_private & OPpLVAL_INTRO)
 	    save_svref(svp);
-	else if (op->op_private & (OPpDEREF_HV|OPpDEREF_AV))
+	else if (op->op_private & OPpDEREF)
 	    provide_ref(op, *svp);
     }
     PUSHs(svp ? *svp : &sv_undef);
@@ -1946,9 +1967,25 @@ SV* sv;
     if (!SvOK(sv)) {
 	if (SvREADONLY(sv))
 	    croak(no_modify);
-	(void)SvUPGRADE(sv, SVt_RV);
-	SvRV(sv) = (op->op_private & OPpDEREF_HV ?
-		    (SV*)newHV() : (SV*)newAV());
+	if (SvTYPE(sv) < SVt_RV)
+	    sv_upgrade(sv, SVt_RV);
+	else if (SvTYPE(sv) >= SVt_PV) {
+	    (void)SvOOK_off(sv);
+	    Safefree(SvPVX(sv));
+	    SvLEN(sv) = SvCUR(sv) = 0;
+	}
+	switch (op->op_private & OPpDEREF)
+	{
+	case OPpDEREF_SV:
+	    SvRV(sv) = newSV(0);
+	    break;
+	case OPpDEREF_AV:
+	    SvRV(sv) = (SV*)newAV();
+	    break;
+	case OPpDEREF_HV:
+	    SvRV(sv) = (SV*)newHV();
+	    break;
+	}
 	SvROK_on(sv);
 	SvSETMAGIC(sv);
     }