[inseparable changes from patch from perl5.003_18 to perl5.003_19]

 CORE LANGUAGE CHANGES

Subject: Make method cache invisible to user code
From: Chip Salzenberg <chip@atlantic.net>
Files: dump.c gv.c gv.h hv.c op.c perl.c pp_hot.c pp_sys.c sv.c toke.c

Subject: Never parse "{m,s,y,tr,q{,q,w,x}}:{,:}" as package or label
From: Chip Salzenberg <chip@atlantic.net>
Files: toke.c

 CORE PORTABILITY

Subject: Fix $^X under HP-UX
From: Chip Salzenberg <chip@atlantic.net>
Files: hints/hpux.sh toke.c

Subject: New hints/hpux.sh
Date: Tue, 31 Dec 1996 15:09:32 -0800
From: Jeff Okamoto <okamoto@hpcc123.corp.hp.com>
Files: hints/hpux.sh

    private-msgid: <199612312309.AA283393772@hpcc123.corp.hp.com>

 DOCUMENTATION

Subject: Perlguts, version 28
Date: Fri, 3 Jan 1997 13:10:46 -0800
From: Jeff Okamoto <okamoto@hpcc123.corp.hp.com>
Files: pod/perlguts.pod

    private-msgid: <199701032110.AA102535846@hpcc123.corp.hp.com>

Subject: Miscellaneous pod patches
From: Ralf S. Engelschall <rse@engelschall.com>
Files: pod/Makefile pod/perldebug.pod pod/perlfunc.pod pod/perlguts.pod

Subject: expanded flock() docs
Date: Fri, 03 Jan 1997 19:31:11 -0500
From: Roderick Schertler <roderick@gate.net>
Files: pod/perlfunc.pod
Msg-ID: <4481.852337871@eeyore.ibcinc.com>

    (applied based on p5p patch as commit 1fd81fbbe87d964ad1f7dbdce41e36f3781dcf82)

Subject: Use Text::Wrap in buildtoc; run buildtoc
From: Ulrich Pfeifer <pfeifer@charly.informatik.uni-dortmund.de>
Files: pod/buildtoc pod/perltoc.pod

Subject: Remove obsolete perlovl.pod
From: Chip Salzenberg <chip@atlantic.net>
Files: MANIFEST plan9/mkfile pod/perlovl.pod vms/Makefile vms/descrip.mms

 OTHER CORE CHANGES

Subject: Fix segv when calling named closures
From: Chip Salzenberg <chip@atlantic.net>
Files: pp_hot.c

Subject: Finish rationalizing "undef value" warnings
From: Chip Salzenberg <chip@atlantic.net>
Files: doop.c pp.c sv.c t/op/assignwarn.t

Subject: Arrange for all "_<file" entries to be in %main::
From: Chip Salzenberg <chip@atlantic.net>
Files: gv.c lib/perl5db.pl

Subject: Introduce CVf_NODEBUG flag
Date: Wed, 01 Jan 1997 15:42:05 -0500
From: Gurusamy Sarathy <gsar@engin.umich.edu>
Files: cv.h pp_hot.c
Msg-ID: <199701012042.PAA25994@aatma.engin.umich.edu>

    (applied based on p5p patch as commit a3d90dd510fe5a67ed9b80e603493d285c30aa97)

Subject: Reword 'may be "0"' warning per Larry; fix its line number
From: Chip Salzenberg <chip@atlantic.net>
Files: op.c pod/perldiag.pod

Subject: 5.003_18: perl_{con,des}truct fixes
Date: Fri, 03 Jan 1997 15:42:04 -0500
From: Doug MacEachern <dougm@osf.org>
Files: perl.c perl.h pod/perlembed.pod pod/perltoc.pod t/op/sysio.t
Msg-ID: <199701032042.PAA06766@postman.osf.org>

    (applied based on p5p patch as commit 316c7b3d7b47e3143f94c7f8621e854c519d1e87)

Subject: Fix lost value from READLINE after TIEHANDLE
From: Gurusamy Sarathy <gsar@engin.umich.edu>
Files: pp_hot.c sv.h

 TESTS

Subject: Create t/pragma directory; populate with new and old
From: Paul Marquess <pmarquess@bfsec.bt.co.uk>
Files: MANIFEST Makefile.SH t/TEST t/comp/use.t t/lib/locale.t t/op/overload.t t/op/use.t t/pragma/locale.t t/pragma/overload.t t/pragma/strict-refs t/pragma/strict-subs t/pragma/strict-vars t/pragma/strict.t t/pragma/subs.t t/pragma/warn-global t/pragma/warning.t

Subject: New tests: comp/colon.t and op/assignwarn.t
From: Robin Barker <rmb@cise.npl.co.uk>
Files: MANIFEST t/comp/colon.t t/op/assignwarn.t

1 files changed, 345 insertions, 0 deletions

diff --git a/t/pragma/overload.t b/t/pragma/overload.t
index e69de29bb2..9c897c31dc 100755
--- a/t/pragma/overload.t
+++ b/t/pragma/overload.t
@@ -0,0 +1,345 @@
+#!./perl
+
+BEGIN {
+    chdir 't' if -d 't';
+    @INC = '../lib';
+}
+
+use Config;
+
+package Oscalar;
+use overload ( 
+				# Anonymous subroutines:
+'+'	=>	sub {new Oscalar $ {$_[0]}+$_[1]},
+'-'	=>	sub {new Oscalar
+		       $_[2]? $_[1]-${$_[0]} : ${$_[0]}-$_[1]},
+'<=>'	=>	sub {new Oscalar
+		       $_[2]? $_[1]-${$_[0]} : ${$_[0]}-$_[1]},
+'cmp'	=>	sub {new Oscalar
+		       $_[2]? ($_[1] cmp ${$_[0]}) : (${$_[0]} cmp $_[1])},
+'*'	=>	sub {new Oscalar ${$_[0]}*$_[1]},
+'/'	=>	sub {new Oscalar 
+		       $_[2]? $_[1]/${$_[0]} :
+			 ${$_[0]}/$_[1]},
+'%'	=>	sub {new Oscalar
+		       $_[2]? $_[1]%${$_[0]} : ${$_[0]}%$_[1]},
+'**'	=>	sub {new Oscalar
+		       $_[2]? $_[1]**${$_[0]} : ${$_[0]}-$_[1]},
+
+qw(
+""	stringify
+0+	numify)			# Order of arguments unsignificant
+);
+
+sub new {
+  my $foo = $_[1];
+  bless \$foo, $_[0];
+}
+
+sub stringify { "${$_[0]}" }
+sub numify { 0 + "${$_[0]}" }	# Not needed, additional overhead
+				# comparing to direct compilation based on
+				# stringify
+
+package main;
+
+$test = 0;
+$| = 1;
+print "1..",&last,"\n";
+
+sub test {
+  $test++; if (shift) {print "ok $test\n";1} else {print "not ok $test\n";0}
+}
+
+$a = new Oscalar "087";
+$b= "$a";
+
+# All test numbers in comments are off by 1.
+# So much for hard-wiring them in :-) To fix this:
+test(1);			# 1
+
+test ($b eq $a);		# 2
+test ($b eq "087");		# 3
+test (ref $a eq "Oscalar");	# 4
+test ($a eq $a);		# 5
+test ($a eq "087");		# 6
+
+$c = $a + 7;
+
+test (ref $c eq "Oscalar");	# 7
+test (!($c eq $a));		# 8
+test ($c eq "94");		# 9
+
+$b=$a;
+
+test (ref $a eq "Oscalar");	# 10
+
+$b++;
+
+test (ref $b eq "Oscalar");	# 11
+test ( $a eq "087");		# 12
+test ( $b eq "88");		# 13
+test (ref $a eq "Oscalar");	# 14
+
+$c=$b;
+$c-=$a;
+
+test (ref $c eq "Oscalar");	# 15
+test ( $a eq "087");		# 16
+test ( $c eq "1");		# 17
+test (ref $a eq "Oscalar");	# 18
+
+$b=1;
+$b+=$a;
+
+test (ref $b eq "Oscalar");	# 19
+test ( $a eq "087");		# 20
+test ( $b eq "88");		# 21
+test (ref $a eq "Oscalar");	# 22
+
+eval q[ package Oscalar; use overload ('++' => sub { $ {$_[0]}++;$_[0] } ) ];
+
+$b=$a;
+
+test (ref $a eq "Oscalar");	# 23
+
+$b++;
+
+test (ref $b eq "Oscalar");	# 24
+test ( $a eq "087");		# 25
+test ( $b eq "88");		# 26
+test (ref $a eq "Oscalar");	# 27
+
+package Oscalar;
+$dummy=bless \$dummy;		# Now cache of method should be reloaded
+package main;
+
+$b=$a;
+$b++;				
+
+test (ref $b eq "Oscalar");	# 28
+test ( $a eq "087");		# 29
+test ( $b eq "88");		# 30
+test (ref $a eq "Oscalar");	# 31
+
+
+eval q[package Oscalar; use overload ('++' => sub { $ {$_[0]} += 2; $_[0] } ) ];
+
+$b=$a;
+
+test (ref $a eq "Oscalar");	# 32
+
+$b++;
+
+test (ref $b eq "Oscalar");	# 33
+test ( $a eq "087");		# 34
+test ( $b eq "88");		# 35
+test (ref $a eq "Oscalar");	# 36
+
+package Oscalar;
+$dummy=bless \$dummy;		# Now cache of method should be reloaded
+package main;
+
+$b++;				
+
+test (ref $b eq "Oscalar");	# 37
+test ( $a eq "087");		# 38
+test ( $b eq "90");		# 39
+test (ref $a eq "Oscalar");	# 40
+
+$b=$a;
+$b++;
+
+test (ref $b eq "Oscalar");	# 41
+test ( $a eq "087");		# 42
+test ( $b eq "89");		# 43
+test (ref $a eq "Oscalar");	# 44
+
+
+test ($b? 1:0);			# 45
+
+eval q[ package Oscalar; use overload ('=' => sub {$main::copies++; 
+						   package Oscalar;
+						   local $new=$ {$_[0]};
+						   bless \$new } ) ];
+
+$b=new Oscalar "$a";
+
+test (ref $b eq "Oscalar");	# 46
+test ( $a eq "087");		# 47
+test ( $b eq "087");		# 48
+test (ref $a eq "Oscalar");	# 49
+
+$b++;
+
+test (ref $b eq "Oscalar");	# 50
+test ( $a eq "087");		# 51
+test ( $b eq "89");		# 52
+test (ref $a eq "Oscalar");	# 53
+test ($copies == 0);		# 54
+
+$b+=1;
+
+test (ref $b eq "Oscalar");	# 55
+test ( $a eq "087");		# 56
+test ( $b eq "90");		# 57
+test (ref $a eq "Oscalar");	# 58
+test ($copies == 0);		# 59
+
+$b=$a;
+$b+=1;
+
+test (ref $b eq "Oscalar");	# 60
+test ( $a eq "087");		# 61
+test ( $b eq "88");		# 62
+test (ref $a eq "Oscalar");	# 63
+test ($copies == 0);		# 64
+
+$b=$a;
+$b++;
+
+test (ref $b eq "Oscalar") || print ref $b,"=ref(b)\n";	# 65
+test ( $a eq "087");		# 66
+test ( $b eq "89");		# 67
+test (ref $a eq "Oscalar");	# 68
+test ($copies == 1);		# 69
+
+eval q[package Oscalar; use overload ('+=' => sub {$ {$_[0]} += 3*$_[1];
+						   $_[0] } ) ];
+$c=new Oscalar;			# Cause rehash
+
+$b=$a;
+$b+=1;
+
+test (ref $b eq "Oscalar");	# 70
+test ( $a eq "087");		# 71
+test ( $b eq "90");		# 72
+test (ref $a eq "Oscalar");	# 73
+test ($copies == 2);		# 74
+
+$b+=$b;
+
+test (ref $b eq "Oscalar");	# 75
+test ( $b eq "360");		# 76
+test ($copies == 2);		# 77
+$b=-$b;
+
+test (ref $b eq "Oscalar");	# 78
+test ( $b eq "-360");		# 79
+test ($copies == 2);		# 80
+
+$b=abs($b);
+
+test (ref $b eq "Oscalar");	# 81
+test ( $b eq "360");		# 82
+test ($copies == 2);		# 83
+
+$b=abs($b);
+
+test (ref $b eq "Oscalar");	# 84
+test ( $b eq "360");		# 85
+test ($copies == 2);		# 86
+
+eval q[package Oscalar; 
+       use overload ('x' => sub {new Oscalar ( $_[2] ? "_.$_[1]._" x $ {$_[0]}
+					      : "_.${$_[0]}._" x $_[1])}) ];
+
+$a=new Oscalar "yy";
+$a x= 3;
+test ($a eq "_.yy.__.yy.__.yy._"); # 87
+
+eval q[package Oscalar; 
+       use overload ('.' => sub {new Oscalar ( $_[2] ? 
+					      "_.$_[1].__.$ {$_[0]}._"
+					      : "_.$ {$_[0]}.__.$_[1]._")}) ];
+
+$a=new Oscalar "xx";
+
+test ("b${a}c" eq "_._.b.__.xx._.__.c._"); # 88
+
+# Check inheritance of overloading;
+{
+  package OscalarI;
+  @ISA = 'Oscalar';
+}
+
+$aI = new OscalarI "$a";
+test (ref $aI eq "OscalarI");	# 89
+test ("$aI" eq "xx");		# 90
+test ($aI eq "xx");		# 91
+test ("b${aI}c" eq "_._.b.__.xx._.__.c._");		# 92
+
+# Here we test blessing to a package updates hash
+
+eval "package Oscalar; no overload '.'";
+
+test ("b${a}" eq "_.b.__.xx._"); # 93
+$x="1";
+bless \$x, Oscalar;
+test ("b${a}c" eq "bxxc");	# 94
+new Oscalar 1;
+test ("b${a}c" eq "bxxc");	# 95
+
+# Negative overloading:
+
+$na = eval { ~$a };
+test($@ =~ /no method found/);	# 96
+
+# Check AUTOLOADING:
+
+*Oscalar::AUTOLOAD = 
+  sub { *{"Oscalar::$AUTOLOAD"} = sub {"_!_" . shift() . "_!_"} ;
+	goto &{"Oscalar::$AUTOLOAD"}};
+
+eval "package Oscalar; use overload '~' => 'comple'";
+
+$na = eval { ~$a };		# Hash was not updated
+test($@ =~ /no method found/);	# 97
+
+bless \$x, Oscalar;
+
+$na = eval { ~$a };		# Hash updated
+test !$@;			# 98
+test($na eq '_!_xx_!_');	# 99
+
+$na = 0;
+
+$na = eval { ~$aI };		# Hash was not updated
+test($@ =~ /no method found/);	# 100
+
+bless \$x, OscalarI;
+
+$na = eval { ~$aI };
+print $@;
+
+test !$@;			# 101
+test($na eq '_!_xx_!_');	# 102
+
+eval "package Oscalar; use overload '>>' => 'rshft'";
+
+$na = eval { $aI >> 1 };	# Hash was not updated
+test($@ =~ /no method found/);	# 103
+
+bless \$x, OscalarI;
+
+$na = 0;
+
+$na = eval { $aI >> 1 };
+print $@;
+
+test !$@;			# 104
+test($na eq '_!_xx_!_');	# 105
+
+test (overload::Method($a, '0+') eq \&Oscalar::numify); # 106
+test (overload::Method($aI,'0+') eq \&Oscalar::numify); # 107
+test (overload::Overloaded($aI)); # 108
+test (!overload::Overloaded('overload')); # 109
+
+test (! defined overload::Method($aI, '<<')); # 110
+test (! defined overload::Method($a, '<')); # 111
+
+test (overload::StrVal($aI) =~ /^OscalarI=SCALAR\(0x[\da-fA-F]+\)$/); # 112
+test (overload::StrVal(\$aI) eq "@{[\$aI]}"); # 113
+
+# Last test is:
+sub last {113}