If your are using C++ ignore half of what I said below. 
MODULE = OpenCA::OpenSSL                PACKAGE = OpenCA::OpenSSL::CRL

OpenCA_OpenSSL_CRL
_new_from_der(SV * sv)

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That is not valid XS code (maybe it now is in 2012), the types (SV *) go on the next inline in an explicity or implicity INPUT: section. Also _new_from_der will be called OpenCA::OpenSSL::CRL::_new_from_der in Perl. You also didn't show the body of _new_from_der so who knows if that works. 
MODULE = OpenCA::OpenSSL                PACKAGE = OpenCA::OpenSSL::CRL
+Ptr         PREFIX = some_

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MODULE = OpenCA::OpenSSL                PACKAGE = OpenCA::OpenSSL::CRL

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2 different packages. Do a 
use Data::Dumper;
use OpenCA::YourModule;
print Dumper(\%OpenCA::OpenSSL::CRL::);

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to see what subs actually were registered in what packages. You can also look at end of the .c file generated during the compiling process for the "XS_EXTERNAL(boot_RootName__SecondName)" function and look at the newXS()s yourself. Also get very familiar with a step through C debugger and having your C compiler generate debugging symbols. You also will probably want to compile an -Od DEBUGGING perl for yourself too.

edit:code sample fixed

In reply to Re: XS DESTROY not invoked by bulk88
in thread XS DESTROY not invoked by CarlosV

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