X-Git-Url: http://git.shadowcat.co.uk/gitweb/gitweb.cgi?a=blobdiff_plain;f=t%2Fop%2Flc.t;h=571868fe027a9d1acba506a9eb6e2f68858d75c4;hb=584420f022db57225e9644b9c6668ff9f567984a;hp=460fed2619dfae2b956462d2845f144f690eac00;hpb=04d26ecebd77cf17d10ce0138bddf4a7c888100f;p=p5sagit%2Fp5-mst-13.2.git

diff --git a/t/op/lc.t b/t/op/lc.t
index 460fed2..571868f 100644
--- a/t/op/lc.t
+++ b/t/op/lc.t
@@ -6,7 +6,7 @@ BEGIN {
     require './test.pl';
 }
 
-plan tests => 59;
+plan tests => 87;
 
 $a = "HELLO.* world";
 $b = "hello.* WORLD";
@@ -163,3 +163,45 @@ for my $a (0,1) {
 	is($a, v10, "[perl #18857]");
     } 
 }
+
+
+# [perl #38619] Bug in lc and uc (interaction between UTF-8, substr, and lc/uc)
+
+for ("a\x{100}", "xyz\x{100}") {
+    is(substr(uc($_), 0), uc($_), "[perl #38619] uc");
+}
+for ("A\x{100}", "XYZ\x{100}") {
+    is(substr(lc($_), 0), lc($_), "[perl #38619] lc");
+}
+for ("a\x{100}", "ßyz\x{100}") { # ß to Ss (different length)
+    is(substr(ucfirst($_), 0), ucfirst($_), "[perl #38619] ucfirst");
+}
+
+# Related to [perl #38619]
+# the original report concerns PERL_MAGIC_utf8.
+# these cases concern PERL_MAGIC_regex_global.
+
+for (map { $_ } "a\x{100}", "abc\x{100}", "\x{100}") {
+    chop; # get ("a", "abc", "") in utf8
+    my $return =  uc($_) =~ /\G(.?)/g;
+    my $result = $return ? $1 : "not";
+    my $expect = (uc($_) =~ /(.?)/g)[0];
+    is($return, 1,       "[perl #38619]");
+    is($result, $expect, "[perl #38619]");
+}
+
+for (map { $_ } "A\x{100}", "ABC\x{100}", "\x{100}") {
+    chop; # get ("A", "ABC", "") in utf8
+    my $return =  lc($_) =~ /\G(.?)/g;
+    my $result = $return ? $1 : "not";
+    my $expect = (lc($_) =~ /(.?)/g)[0];
+    is($return, 1,       "[perl #38619]");
+    is($result, $expect, "[perl #38619]");
+}
+
+for (1, 4, 9, 16, 25) {
+    is(uc "\x{03B0}" x $_, "\x{3a5}\x{308}\x{301}" x $_,
+       'uc U+03B0 grows threefold');
+
+    is(lc "\x{0130}" x $_, "i\x{307}" x $_, 'lc U+0130 grows');
+}