[inseparable changes from patch from perl5.003_24 to perl5.003_25]perl-5.003_25

 CORE LANGUAGE CHANGES

Subject: Make $] read-only
From: Chip Salzenberg <chip@perl.com>
Files: gv.c

Subject: New variable C<$^S> is a native version of C<$?>
From: Chip Salzenberg <chip@perl.com>
Files: doio.c global.sym gv.c interp.sym lib/English.pm mg.c perl.c perl.h pod/perldelta.pod pod/perlfunc.pod pod/perlvar.pod pp_ctl.c pp_sys.c proto.h util.c

Subject: Make $^T work with undump, and don't taint it
From: Chip Salzenberg <chip@perl.com>
Files: perl.c

 CORE PORTABILITY

Subject: VMS patches for _24
Date: Fri, 31 Jan 1997 02:34:37 -0500 (EST)
From: Charles Bailey <bailey@HMIVAX.HUMGEN.UPENN.EDU>
Files: ext/DynaLoader/DynaLoader.pm ext/DynaLoader/dl_vms.xs lib/AutoSplit.pm lib/ExtUtils/MM_VMS.pm lib/ExtUtils/MakeMaker.pm perl.h pp_hot.c t/lib/filehand.t t/op/closure.t vms/Makefile vms/config.vms vms/descrip.mms vms/ext/filespec.t vms/vms.c vms/vmsish.h

    private-msgid: <01IEUIFP5038004GQP@hmivax.humgen.upenn.edu>

 DOCUMENTATION

Subject: Document how extension pms go in $archlib
From: Chip Salzenberg <chip@perl.com>
Files: pod/perldelta.pod

Subject: perlfunc.pod tweaks
Date: Thu, 30 Jan 1997 16:20:55 -0500
From: Roderick Schertler <roderick@gate.net>
Files: pod/perlfunc.pod

    private-msgid: <20526.854659255@eeyore.ibcinc.com>

Subject: Error lines must not have trailing periods
From: Chip Salzenberg <chip@perl.com>
Files: pod/perldiag.pod

 LIBRARY AND EXTENSIONS

Subject: Make IO::Handle::gets() an alias of getline
Date: Thu, 30 Jan 1997 12:03:15 +0100
From: Gisle Aas <aas@bergen.sn.no>
Files: ext/IO/lib/IO/Handle.pm lib/IO/Handle.pm

    private-msgid: <199701301103.MAA11291@bergen.sn.no>

 OTHER CORE CHANGES

Subject: Require '-T' in argv[], not just on #! line
From: Chip Salzenberg <chip@perl.com>
Files: perl.c pod/perldiag.pod

Subject: Fix C<return @_> and associated stack bugs
From: Chip Salzenberg <chip@perl.com>
Files: cop.h pp_ctl.c pp_hot.c t/op/misc.t

Subject: Fix never-closing handle after C<select>
From: Chip Salzenberg <chip@perl.com>
Files: pp_sys.c

Subject: Fix /\G/g with patterns that match empty string
From: Ilya Zakharevich <ilya@math.ohio-state.edu>
Files: pp_hot.c

Subject: Don't create AV, HV, IO when assigning glob
From: Chip Salzenberg <chip@perl.com>
Files: mg.c

 TESTS

Subject: More Amiga test patches
Date: Wed, 29 Jan 1997 16:07:33 +0100
From: "Norbert Pueschel" <pueschel@imsdd.meb.uni-bonn.de>
Files: README.amiga t/lib/safe2.t t/op/closure.t

    private-msgid: <77724725@Armageddon.meb.uni-bonn.de>

1 files changed, 18 insertions, 19 deletions

diff --git a/pp_hot.c b/pp_hot.c
index 120c026b4b..16c250593e 100644
--- a/pp_hot.c
+++ b/pp_hot.c
@@ -769,6 +769,7 @@ PP(pp_match)
     STRLEN len;
     I32 minmatch = 0;
     I32 oldsave = savestack_ix;
+    I32 update_minmatch = 1;
 
     if (op->op_flags & OPf_STACKED)
 	TARG = POPs;
@@ -799,6 +800,7 @@ PP(pp_match)
 	    if (mg && mg->mg_len >= 0) {
 		rx->endp[0] = rx->startp[0] = s + mg->mg_len; 
 		minmatch = (mg->mg_flags & MGf_MINMATCH);
+		update_minmatch = 0;
 	    }
 	}
     }
@@ -815,7 +817,8 @@ play_it_again:
 	t = s = rx->endp[0];
 	if (s >= strend)
 	    goto nope;
-	minmatch = (s == rx->startp[0]);
+	if (update_minmatch++)
+	    minmatch = (s == rx->startp[0]);
     }
     if (pm->op_pmshort) {
 	if (pm->op_pmflags & PMf_SCANFIRST) {
@@ -1052,7 +1055,7 @@ do_readline()
 		            *(end++) = '\n';  *end = '\0';
 		            for (cp = rstr; *cp; cp++) *cp = _tolower(*cp);
 		            if (hasdir) {
-		              if (isunix) trim_unixpath(rstr,SvPVX(tmpglob));
+		              if (isunix) trim_unixpath(rstr,SvPVX(tmpglob),1);
 		              begin = rstr;
 		            }
 		            else {
@@ -1654,37 +1657,33 @@ PP(pp_leavesub)
     PMOP *newpm;
     I32 gimme;
     register CONTEXT *cx;
+    struct block_sub cxsub;
 
     POPBLOCK(cx,newpm);
-    /* Delay POPSUB until stack values are safe */
-
+    POPSUB1(cx);	/* Delay POPSUB2 until stack values are safe */
+ 
     if (gimme == G_SCALAR) {
 	MARK = newsp + 1;
 	if (MARK <= SP)
-	    if (SvFLAGS(TOPs) & SVs_TEMP)
-		*MARK = TOPs;
-	    else
-		*MARK = sv_mortalcopy(TOPs);
+	    *MARK = SvTEMP(TOPs) ? TOPs : sv_mortalcopy(TOPs);
 	else {
-	    MEXTEND(mark,0);
+	    MEXTEND(MARK, 0);
 	    *MARK = &sv_undef;
 	}
 	SP = MARK;
     }
     else {
-	for (mark = newsp + 1; mark <= SP; mark++)
-	    if (!(SvFLAGS(*mark) & SVs_TEMP))
-		*mark = sv_mortalcopy(*mark);
-		/* in case LEAVE wipes old return values */
+	for (MARK = newsp + 1; MARK <= SP; MARK++) {
+	    if (!SvTEMP(*MARK))
+		*MARK = sv_mortalcopy(*MARK);
+	}
     }
-
-    /* Now that stack values are safe, release CV and @_ */
-    POPSUB(cx);
-
-    curpm = newpm;	/* Don't pop $1 et al till now */
+    PUTBACK;
+    
+    POPSUB2();		/* Stack values are safe: release CV and @_ ... */
+    curpm = newpm;	/* ... and pop $1 et al */
 
     LEAVE;
-    PUTBACK;
     return pop_return();
 }