[inseparable changes from patch from perl5.003_26 to perl5.003_27]

 BUILD PROCESS

Subject: Fix eval "" in Configure
Date: Fri, 14 Feb 1997 13:09:53 -0500
From: John L. Allen <allen@gateway.grumman.com>
Files: Configure

    Subject: Re: Configure problem on IRIX - me dumb
    
    p5p-msgid: <9702141809.AA17001@gateway.grumman.com>

Subject: Don't link with -lsfio if sfio is not requested
From: Chip Salzenberg <chip@perl.com>
Files: Configure

Subject: perl5.003_26 Configure change "win" for AIX 4
Date: Fri, 14 Feb 1997 13:59:02 -0600 (CST)
From: Tim Mooney <mooney@dogbert.cc.ndsu.NoDak.edu>
Files: Configure

    p5p-msgid: <Pine.OSF.3.95.970214135751.32654A-100000@dogbert.cc.ndsu.NoDak.edu>
    private-msgid: <Pine.OSF.3.95.970214135751.32654A-100000@dogbert.cc.ndsu.NoD

 CORE LANGUAGE CHANGES

Subject: Better looks_like_number() function [sv.c]
Date: Fri, 14 Feb 1997 18:08:52 +0100
From: Gisle Aas <aas@bergen.sn.no>
Files: sv.c
Msg-ID: <199702141708.SAA17546@bergen.sn.no>

    (applied based on p5p patch as commit 8dbaa58ee2aba7cc22d84199a674c58bbf108b46)

Subject: Remove redundant functions UNIVERSAL::{class,is_instance}
Date: 14 Feb 1997 15:52:21 +0000
From: Gisle Aas <aas@bergen.sn.no>
Files: pod/perldelta.pod pod/perlobj.pod t/op/universal.t universal.c
Msg-ID: <hwwsbpeq2.fsf@bergen.sn.no>

    (applied based on p5p patch as commit 77bb9b23081b62119e8fbe9f5655b8802e4537ae)

Subject: Allow C<setpgrp $$>
Date: 16 Feb 1997 23:19:12 -0500
From: Roderick Schertler <roderick@gate.net>
Files: pp_sys.c
Msg-ID: <pzraigyshr.fsf@eeyore.ibcinc.com>

    (applied based on p5p patch as commit 3d2573a84a1aa655d5da58c57b3fc20e04d40f9f)

Subject: Fix syntax error on C<&$1>
From: Chip Salzenberg <chip@perl.com>
Files: toke.c

Subject: Fix grep() with refs in array context
From: Chip Salzenberg <chip@perl.com>
Files: pp.c

 CORE PORTABILITY

Subject: Eliminate $^S; add C<use vmsish qw(status exit time)>
Date: Mon, 17 Feb 1997 02:45:26 -0500 (EST)
From: Charles Bailey <bailey@HMIVAX.HUMGEN.UPENN.EDU>
Files: MANIFEST gv.c lib/English.pm lib/ExtUtils/MM_VMS.pm lib/ExtUtils/Mksymlists.pm lib/ExtUtils/xsubpp mg.c op.c perl.c perl.h pod/perldelta.pod pod/perlmod.pod pod/perlvar.pod pp_ctl.c pp_sys.c utils/perldoc.PL vms/Makefile vms/config.vms vms/descrip.mms vms/ext/Stdio/Stdio.pm vms/ext/Stdio/Stdio.xs vms/ext/XSSymSet.pm vms/ext/vmsish.pm vms/vms.c vms/vmsish.h win32/makedef.pl

    private-msgid: <01IFI9CFKL0S004R2V@hmivax.humgen.upenn.edu>

 LIBRARY AND EXTENSIONS

Subject: Remove Fatal.pm
From: Chip Salzenberg <chip@perl.com>
Files: MANIFEST lib/Fatal.pm pod/perldelta.pod pod/perlmod.pod pod/roffitall t/lib/fatal.t

Subject: Refresh MakeMaker to 5.40
From: Andy Dougherty <doughera@lafcol.lafayette.edu>
Files: lib/ExtUtils/Liblist.pm lib/ExtUtils/MM_Unix.pm lib/ExtUtils/MakeMaker.pm lib/ExtUtils/Mksymlists.pm

 OTHER CORE CHANGES

Subject: Fix core dump when embedding
From: Chip Salzenberg <chip@perl.com>
Files: perl.c

Subject: Re: Fragile signals
Date: Thu, 13 Feb 1997 01:44:39 -0500 (EST)
From: Ilya Zakharevich <ilya@math.ohio-state.edu>
Files: mg.c
Msg-ID: <199702130644.BAA07572@monk.mps.ohio-state.edu>

    (applied based on p5p patch as commit 09df8c7df7dfc9853902f1fdd8a6d95f53be66fc)

Subject: Make format strings correspond exactly to parameters
Date: 13 Feb 1997 17:24:31 -0500
From: Roderick Schertler <roderick@gate.net>
Files: doio.c ext/DB_File/DB_File.xs ext/Opcode/Opcode.xs gv.c op.c perl.c pp_ctl.c pp_sys.c regcomp.c toke.c
Msg-ID: <pz7mkc1h0g.fsf@eeyore.ibcinc.com>

    (applied based on p5p patch as commit bf81aadd817bdea29720b072eef945df2da8463b)

Subject: Don't try to attach 'o' magic to read-only values
From: Chip Salzenberg <chip@perl.com>
Files: sv.c

Subject: Fix carriage-return message
From: Chip Salzenberg <chip@perl.com>
Files: toke.c

Subject: In <=>, test for equality first
From: Chip Salzenberg <chip@perl.com>
Files: pp.c

Subject: Don't mark sv_{true,false} PADTMP
From: Chip Salzenberg <chip@perl.com>
Files: op.c

1 files changed, 49 insertions, 20 deletions

diff --git a/sv.c b/sv.c
index 528afd988c..65d7d30e09 100644
--- a/sv.c
+++ b/sv.c
@@ -1504,7 +1504,7 @@ SV *sv;
     register char *s;
     register char *send;
     register char *sbegin;
-    I32 numtype = 1;
+    I32 numtype;
     STRLEN len;
 
     if (SvPOK(sv)) {
@@ -1520,31 +1520,53 @@ SV *sv;
     s = sbegin;
     while (isSPACE(*s))
 	s++;
-    if (s >= send)
-	return 0;
     if (*s == '+' || *s == '-')
 	s++;
-    while (isDIGIT(*s))
-	s++;
-    if (s == send)
-	return numtype;
-    if (*s == '.') {
-	numtype = 1;
-	s++;
+
+    /* next must be digit or '.' */
+    if (isDIGIT(*s)) {
+        do {
+	    s++;
+        } while (isDIGIT(*s));
+        if (*s == '.') {
+	    s++;
+            while (isDIGIT(*s))  /* optional digits after "." */
+                s++;
+        }
     }
-    else if (s == SvPVX(sv))
-	return 0;
-    while (isDIGIT(*s))
-	s++;
-    if (s == send)
-	return numtype;
+    else if (*s == '.') {
+        s++;
+        /* no digits before '.' means we need digits after it */
+        if (isDIGIT(*s)) {
+	    do {
+	        s++;
+            } while (isDIGIT(*s));
+        }
+        else
+	    return 0;
+    }
+    else
+        return 0;
+
+    /*
+     * we return 1 if the number can be converted to _integer_ with atol()
+     * and 2 if you need (int)atof().
+     */
+    numtype = 1;
+
+    /* we can have an optional exponent part */
     if (*s == 'e' || *s == 'E') {
 	numtype = 2;
 	s++;
 	if (*s == '+' || *s == '-')
 	    s++;
-	while (isDIGIT(*s))
-	    s++;
+        if (isDIGIT(*s)) {
+            do {
+                s++;
+            } while (isDIGIT(*s));
+        }
+        else
+            return 0;
     }
     while (isSPACE(*s))
 	s++;
@@ -2929,6 +2951,11 @@ sv_collxfrm(sv, nxp)
 	    Safefree(mg->mg_ptr);
 	s = SvPV(sv, len);
 	if ((xf = mem_collxfrm(s, len, &xlen))) {
+	    if (SvREADONLY(sv)) {
+		SAVEFREEPV(xf);
+		*nxp = xlen;
+		return xf;
+	    }
 	    if (! mg) {
 		sv_magic(sv, 0, 'o', 0, 0);
 		mg = mg_find(sv, 'o');
@@ -2938,8 +2965,10 @@ sv_collxfrm(sv, nxp)
 	    mg->mg_len = xlen;
 	}
 	else {
-	    mg->mg_ptr = NULL;
-	    mg->mg_len = -1;
+	    if (mg) {
+		mg->mg_ptr = NULL;
+		mg->mg_len = -1;
+	    }
 	}
     }
     if (mg && mg->mg_ptr) {