X-Git-Url: http://git.shadowcat.co.uk/gitweb/gitweb.cgi?a=blobdiff_plain;f=t%2Fop%2Frecurse.t;h=10830e622137e42c025c3d7d0213b7ab54b1af04;hb=1c509eb921569425706e6fe39ea7cb2f11e99d1b;hp=a86744e4aff3115fe3f10b6e8cd463a1229e0422;hpb=4fc932073df150c47d1c1a91564ea6bfacbc9a85;p=p5sagit%2Fp5-mst-13.2.git

diff --git a/t/op/recurse.t b/t/op/recurse.t
index a86744e..10830e6 100755
--- a/t/op/recurse.t
+++ b/t/op/recurse.t
@@ -8,7 +8,7 @@ BEGIN {
     chdir 't' if -d 't';
     @INC = qw(. ../lib);
     require "test.pl";
-    plan(tests => 26);
+    plan(tests => 28);
 }
 
 use strict;
@@ -49,24 +49,24 @@ sub takeuchi {
 	    : $_[2];
 }
 
-is(gcd(1147, 1271), 31, "gcd(1147, 1271)");
+is(gcd(1147, 1271), 31, "gcd(1147, 1271) == 31");
 
-is(gcd(1908, 2016), 36, "gcd(1908, 2016)");
+is(gcd(1908, 2016), 36, "gcd(1908, 2016) == 36");
 
-is(factorial(10), 3628800, "factorial(10)");
+is(factorial(10), 3628800, "factorial(10) == 3628800");
 
-is(factorial(factorial(3)), 720, "factorial(factorial(3))");
+is(factorial(factorial(3)), 720, "factorial(factorial(3)) == 720");
 
-is(fibonacci(10), 89, "fibonacci(10)");
+is(fibonacci(10), 89, "fibonacci(10) == 89");
 
-is(fibonacci(fibonacci(7)), 17711, "fibonacci(fibonacci(7))");
+is(fibonacci(fibonacci(7)), 17711, "fibonacci(fibonacci(7)) == 17711");
 
 my @ack = qw(1 2 3 4 2 3 4 5 3 5 7 9 5 13 29 61);
 
 for my $x (0..3) { 
     for my $y (0..3) {
 	my $a = ackermann($x, $y);
-	is($a, shift(@ack), "ackermann($x, y)");
+	is($a, shift(@ack), "ackermann($x, $y) == $a");
     }
 }
 
@@ -112,6 +112,26 @@ is(takeuchi($x, $y, $z), $z + 1, "takeuchi($x, $y, $z) == $z + 1");
     is(sillysum(1000), 1000*1001/2, "recursive sum of 1..1000");
 }
 
-
-
+# check ok for recursion depth > 65536
+{
+    my $r;
+    eval { 
+	$r = runperl(
+		     nolib => 1,
+		     stderr => 1,
+		     prog => q{$d=0; $e=1; sub c { ++$d; if ($d > 66000) { $e=0 } else { c(); c() unless $d % 32768 } --$d } c(); exit $e});
+    };
+  SKIP: {
+      skip("Out of memory -- increase your data/heap?", 2)
+	  if $r =~ /Out of memory/i;
+      is($r, '', "64K deep recursion - no output expected");
+
+      if ($^O eq 'MacOS') {
+          ok(1, "$^O: \$? is unreliable");
+      } else {
+          is($?, 0, "64K deep recursion - no coredump expected");
+      }
+
+  }
+}