Re: [perl #9394] Re: [ID 20020525.002] coredump/ bad free warning in blead with...

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

diff --git a/t/op/ref.t b/t/op/ref.t
index 9fcc8ac..9470efa 100755 (executable)
--- a/t/op/ref.t
+++ b/t/op/ref.t
@@ -1,6 +1,13 @@
 #!./perl
 
-print "1..51\n";
+BEGIN {
+    chdir 't' if -d 't';
+    @INC = qw(. ../lib);
+}
+
+print "1..65\n";
+
+require 'test.pl';
 
 # Test glob operations.
 
@@ -207,11 +214,15 @@ print @baa == 3 ? "ok 42\n" : "not ok 42\n";
 print grep(ref($_), @baa) == 3 ? "ok 43\n" : "not ok 43\n";
 print @bzz == 3 ? "ok 44\n" : "not ok 44\n";
 
+# also, it can't be an lvalue
+eval '\\($x, $y) = (1, 2);';
+print $@ =~ /Can\'t modify.*ref.*in.*assignment/ ? "ok 45\n" : "not ok 45\n";
+
 # test for proper destruction of lexical objects
 
-sub larry::DESTROY { print "# larry\nok 45\n"; }
-sub curly::DESTROY { print "# curly\nok 46\n"; }
-sub moe::DESTROY   { print "# moe\nok 47\n"; }
+sub larry::DESTROY { print "# larry\nok 46\n"; }
+sub curly::DESTROY { print "# curly\nok 47\n"; }
+sub moe::DESTROY   { print "# moe\nok 48\n"; }
 
 {
     my ($joe, @curly, %larry);
@@ -225,18 +236,122 @@ print "# left block\n";
 
 # another glob test
 
-$foo = "not ok 48";
+$foo = "not ok 49";
 { local(*bar) = "foo" }
-$bar = "ok 48";
+$bar = "ok 49";
 local(*bar) = *bar;
 print "$bar\n";
 
+$var = "ok 50";
+$_   = \$var;
+print $$_,"\n";
+
+# test if reblessing during destruction results in more destruction
+
+{
+    package A;
+    sub new { bless {}, shift }
+    DESTROY { print "# destroying 'A'\nok 52\n" }
+    package _B;
+    sub new { bless {}, shift }
+    DESTROY { print "# destroying '_B'\nok 51\n"; bless shift, 'A' }
+    package main;
+    my $b = _B->new;
+}
+
+# test if $_[0] is properly protected in DESTROY()
+
+{
+    my $i = 0;
+    local $SIG{'__DIE__'} = sub {
+       my $m = shift;
+       if ($i++ > 4) {
+           print "# infinite recursion, bailing\nnot ok 53\n";
+           exit 1;
+        }
+       print "# $m";
+       if ($m =~ /^Modification of a read-only/) { print "ok 53\n" }
+    };
+    package C;
+    sub new { bless {}, shift }
+    DESTROY { $_[0] = 'foo' }
+    {
+       print "# should generate an error...\n";
+       my $c = C->new;
+    }
+    print "# good, didn't recurse\n";
+}
+
+# test if refgen behaves with autoviv magic
+
+{
+    my @a;
+    $a[1] = "ok 54\n";
+    print ${\$_} for @a;
+}
+
+# This test is the reason for postponed destruction in sv_unref
+$a = [1,2,3];
+$a = $a->[1];
+print "not " unless $a == 2;
+print "ok 55\n";
+
+# This test used to coredump. The BEGIN block is important as it causes the
+# op that created the constant reference to be freed. Hence the only
+# reference to the constant string "pass" is in $a. The hack that made
+# sure $a = $a->[1] would work didn't work with references to constants.
+
+my $test = 56;
+
+foreach my $lexical ('', 'my $a; ') {
+  my $expect = "pass\n";
+  my $result = runperl (switches => ['-wl'], stderr => 1,
+    prog => $lexical . 'BEGIN {$a = \q{pass}}; $a = $$a; print $a');
+
+  if ($? == 0 and $result eq $expect) {
+    print "ok $test\n";
+  } else {
+    print "not ok $test # \$? = $?\n";
+    print "# expected ", _qq ($expect), ", got ", _qq ($result), "\n";
+  }
+  $test++;
+}
+
+sub x::DESTROY {print "ok ", $test + shift->[0], "\n"}
+{ my $a1 = bless [3],"x";
+  my $a2 = bless [2],"x";
+  { my $a3 = bless [1],"x";
+    my $a4 = bless [0],"x";
+    567;
+  }
+}
+$test+=4;
+
+my $result = runperl (switches=>['-l'],
+                      prog=> 'print 1; print qq-*$\*-;print 1;');
+my $expect = "1\n*\n*\n1\n";
+if ($result eq $expect) {
+  print "ok $test\n";
+} else {
+  print "not ok $test\n";
+  foreach ($expect, $result) {
+    s/\n/\\n/gs;
+  }
+  print "# expected \"$expect\", got \"$result\"\n";
+}
+
+# test global destruction
+
+++$test;
+my $test1 = $test + 1;
+my $test2 = $test + 2;
+
 package FINALE;
 
 {
-    $ref3 = bless ["ok 51\n"];         # package destruction
-    my $ref2 = bless ["ok 50\n"];      # lexical destruction
-    local $ref1 = bless ["ok 49\n"];   # dynamic destruction
+    $ref3 = bless ["ok $test2\n"];     # package destruction
+    my $ref2 = bless ["ok $test1\n"];  # lexical destruction
+    local $ref1 = bless ["ok $test\n"];        # dynamic destruction
     1;                                 # flush any temp values on stack
 }