svleak.t: Enable syntax error tests under -Dmad

[perl5.git] / t / op / warn.t

diff --git a/t/op/warn.t b/t/op/warn.t
index b47bd90..71de5e2 100644 (file)
--- a/t/op/warn.t
+++ b/t/op/warn.t
@@ -7,7 +7,7 @@ BEGIN {
     require './test.pl';
 }
 
-plan 21;
+plan 30;
 
 my @warnings;
 my $wa = []; my $ea = [];
@@ -115,10 +115,12 @@ fresh_perl_like(
    print STDERR $a; warn $a;
  ',
   qr/^\xee(?:\r?\n\xee){3}/,
-  {},
+  { switches => [ "-C0" ] },
  'warn emits logical characters, not internal bytes [perl #45549]'  
 );
 
+SKIP: {
+    skip_if_miniperl('miniperl ignores -C', 1);
 fresh_perl_like(
  '
    $a = "\xee\n";
@@ -130,12 +132,64 @@ fresh_perl_like(
   { switches => ['-CE'] },
  'warn respects :utf8 layer'
 );
+}
 
 fresh_perl_like(
  'warn chr 300',
   qr/^Wide character in warn .*\n\xc4\xac at /,
-  {},
+  { switches => [ "-C0" ] },
  'Wide character in warn (not print)'
 );
 
+fresh_perl_like(
+ 'warn []',
+  qr/^ARRAY\(0x[\da-f]+\) at /a,
+  { },
+ 'warn stringifies in the absence of $SIG{__WARN__}'
+);
+
+use Tie::Scalar;
+tie $@, "Tie::StdScalar";
+
+$@ = "foo\n";
+@warnings = ();
+warn;
+is @warnings, 1;
+like $warnings[0], qr/^foo\n\t\.\.\.caught at warn\.t /,
+    '...caught is appended to tied $@';
+
+$@ = \$_;
+@warnings = ();
+{
+  local *{ref(tied $@) . "::STORE"} = sub {};
+  undef $@;
+}
+warn;
+is @warnings, 1;
+is $warnings[0], \$_, '!SvOK tied $@ that returns ref is used';
+
+untie $@;
+
+@warnings = ();
+{
+  package o;
+  use overload '""' => sub { "" };
+}
+tie $t, Tie::StdScalar;
+$t = bless [], o;
+{
+  local *{ref(tied $t) . "::STORE"} = sub {};
+  undef $t;
+}
+warn $t;
+is @warnings, 1;
+object_ok $warnings[0], 'o',
+  'warn $tie_returning_object_that_stringifes_emptily';
+
+@warnings = ();
+eval "#line 42 Cholmondeley\n \$\@ = '3'; warn";
+eval "#line 42 Cholmondeley\n \$\@ = 3; warn";
+is @warnings, 2;
+is $warnings[1], $warnings[0], 'warn treats $@=3 and $@="3" the same way';
+
 1;