Re^5: Debugger and lexicals

Stricly speaking $a is not optimised away; it just has a short life span, as as I pointed out earlier.

$ cat /tmp/Foo.pm 
package Foo;
sub DESTROY { print "DESTROY\n" }
my $a = bless {};
print "executing Foo\n";

$ perl -I/tmp -e'use Foo; BEGIN { print "BEGIN\n" }'
executing Foo
DESTROY
BEGIN
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Dave.

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Re^6: Debugger and lexicals by Anonymous Monk on Aug 07, 2011 at 13:37 UTC
Stricly speaking $a is not optimised away; it just has a short life span, as as I pointed out earlier. Yeah, because it isn't attached to any scratchpad	[reply]
Re^7: Debugger and lexicals by dave_the_m (Monsignor) on Aug 07, 2011 at 15:35 UTC
Its attached to the scratchpad of the CV that is created by compiling Foo. After Foo is executed, that CV and its scratchpad are freed, and $a gets freed at that point since there aren't any other references to it. Dave.	[reply]