[perl #132668] [NATIVECALL][SEGV] OpenSSL PEM_write_bio_RSAPrivateKey

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# New Ticket Created by  Lloyd Fournier 
# Please include the string:  [perl #132668]
# in the subject line of all future correspondence about this issue. 
# <URL: https://rt.perl.org/Ticket/Display.html?id=132668 >


I was trying to add RSA key generation using nativecall and OpenSSL but
kept getting non-deterministic segfaults. golfed example:

#nativessl.pl
use NativeCall;

sub gen-lib { $*VM.platform-library-name('ssl'.IO).Str }

sub RSA_new(-->OpaquePointer) is native(&gen-lib) {...}
sub RSA_generate_key_ex(OpaquePointer $rsa, int32 $bits, OpaquePointer $e,
OpaquePointer $cb --> OpaquePointer) is native(&gen-lib) {...}
sub BN_new(-->OpaquePointer) is native(&gen-lib) {...}
sub BN_set_word(OpaquePointer $bn, uint32 $e --> int32) is native(&gen-lib)
{...}
sub BIO_s_mem(-->OpaquePointer) is native(&gen-lib) {...}
sub PEM_write_bio_RSAPrivateKey(OpaquePointer $bio, OpaquePointer $rsa -->
int32) is native(&gen-lib){...}
sub BIO_new(OpaquePointer $method --> OpaquePointer) is
native(&gen-lib){...};

{
    my uint32 $bits = 2048;
    my $bne = BN_new();
    BN_set_word($bne, 3) || die;
    my $rsa = RSA_new();
    RSA_generate_key_ex($rsa, $bits, $bne, Nil) || die;
    my $bio = BIO_new(BIO_s_mem());
    PEM_write_bio_RSAPrivateKey($bio, $rsa);
}

bash-3.2$ while perl6 nativessl.pl; do echo "worked"; done
Segmentation fault: 11
bash-3.2$ while perl6 nativessl.pl; do echo "worked"; done
worked
worked
worked
worked
worked
worked
Segmentation fault: 11
bash-3.2$ while perl6 nativessl.pl; do echo "worked"; done
worked
worked
worked
worked
Segmentation fault: 11
bash-3.2$