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perldelta entry for v5.31.1-101-g5c696bd319
authorDavid Mitchell <davem@iabyn.com>
Wed, 3 Jul 2019 20:16:53 +0000 (21:16 +0100)
committerDavid Mitchell <davem@iabyn.com>
Wed, 3 Jul 2019 20:17:26 +0000 (21:17 +0100)
pod/perldelta.pod

index bffe79e..c31e45f 100644 (file)
@@ -361,7 +361,11 @@ well.
 
 =item *
 
 
 =item *
 
-XXX
+The PERL_DESTRUCT_LEVEL environment variable was formerly only honored on
+perl binaries built with DEBUGGING support. It it now checked on all perl
+builds. It's normal use is to force perl to individually free every block
+of memory which it has allocated before exiting, which is useful when
+using automated leak detection tools such as valgrind.
 
 =back
 
 
 =back