From: Nicholas Clark <nick@ccl4.org>
Date: Sun, 2 Jun 2002 20:26:22 +0000 (+0100)
Subject: [Encode PATCH] spurious warning
X-Git-Url: http://git.shadowcat.co.uk/gitweb/gitweb.cgi?a=commitdiff_plain;h=bb7af5ca4c2c314cbc4d8bf6a2c966e012f3faa5;p=p5sagit%2Fp5-mst-13.2.git

[Encode PATCH] spurious warning
Message-ID: <20020602192619.GA320@Bagpuss.unfortu.net>

p4raw-id: //depot/perl@17009
---

diff --git a/ext/Encode/lib/Encode/Alias.pm b/ext/Encode/lib/Encode/Alias.pm
index 876f971..9e9cca5 100644
--- a/ext/Encode/lib/Encode/Alias.pm
+++ b/ext/Encode/lib/Encode/Alias.pm
@@ -158,7 +158,7 @@ sub init_aliases
     define_alias( qr/^(.+)\@euro$/i => '"$1"' );
 
     define_alias( qr/\b(?:iso[-_]?)?latin[-_]?(\d+)$/i 
-		  => '"iso-8859-$Encode::Alias::Latin2iso[$1]"' );
+		  => 'defined $Encode::Alias::Latin2iso[$1] ? "iso-8859-$Encode::Alias::Latin2iso[$1]" : undef' );
 
     define_alias( qr/\bwin(latin[12]|cyrillic|baltic|greek|turkish|
 			 hebrew|arabic|baltic|vietnamese)$/ix => 
diff --git a/ext/PerlIO/t/encoding.t b/ext/PerlIO/t/encoding.t
index b53eab5..986f21e 100644
--- a/ext/PerlIO/t/encoding.t
+++ b/ext/PerlIO/t/encoding.t
@@ -1,8 +1,10 @@
-#!./perl
+#!./perl -w
 
 BEGIN {
     chdir 't' if -d 't';
     @INC = '../lib';
+    no warnings; # Need global -w flag for later tests, but don't want this
+    # to warn here:
     push @INC, "::lib:$MacPerl::Architecture:" if $^O eq 'MacOS';
     unless (find PerlIO::Layer 'perlio') {
 	print "1..0 # Skip: not perlio\n";
@@ -10,11 +12,12 @@ BEGIN {
     }
 }
 
-print "1..11\n";
+print "1..13\n";
 
 my $grk = "grk$$";
 my $utf = "utf$$";
 my $fail1 = "fail$$";
+my $fail2 = "fail_$$";
 my $russki = "koi8r$$";
 
 if (open(GRK, ">$grk")) {
@@ -68,7 +71,7 @@ if (open(GRK, "<$grk")) {
     close GRK;
 }
 
-$SIG{__WARN__} = sub {$warn = $_[0]};
+$SIG{__WARN__} = sub {$warn .= $_[0]};
 
 if (open(FAIL, ">:encoding(NoneSuch)", $fail1)) {
     print "not ok 9 # Open should fail\n";
@@ -90,7 +93,7 @@ if (open(RUSSKI, ">$russki")) {
     binmode(RUSSKI, ":raw");
     my $buf1;
     read(RUSSKI, $buf1, 1);
-    eof(RUSSKI);
+    # eof(RUSSKI);
     binmode(RUSSKI, ":encoding(koi8-r)");
     my $buf2;
     read(RUSSKI, $buf2, 1);
@@ -109,6 +112,25 @@ if (open(RUSSKI, ">$russki")) {
     print "not ok 11 # open failed: $!\n";
 }
 
+undef $warn;
+
+# Check there is no Use of uninitialized value in concatenation (.) warning
+# due to the way @latin2iso_num was used to make aliases.
+if (open(FAIL, ">:encoding(latin42)", $fail2)) {
+    print "not ok 12 # Open should fail\n";
+} else {
+    print "ok 12\n";
+}
+if (!defined $warn) {
+    print "not ok 13 # warning is undef\n";
+} elsif ($warn =~ /^Cannot find encoding "latin42" at.*line \d+\.$/) {
+    print "ok 13\n";
+} else {
+    print "not ok 13 # warning is: \n";
+    $warn =~ s/^/# /mg;
+    print "$warn";
+}
+
 END {
     unlink($grk, $utf, $fail1, $russki);
 }