From @zoffixznet

Haven't had the chance to golf this and unsure whether it's a problem with Perl 6 or some of the prereq modules, but this code segfaults at about 80% rate​:

  use WWW;
  await (start get 'perl6.org') xx 4

From @zoffixznet

Looks like the issue is something to do with redirects and HTTPS (IO​::Socket​::SSL / HTTP​::UserAgent ?)

- Accessing site over HTTP doesn't seem to have issues
- Accessing site over HTTPS appears to hang
- Accessing a site that forces HTTPS over HTTP causes the segfault

  $ perl6 -MWWW -e 'await (start get "https://perl6.org/") xx 4'
  ^C
  $ perl6 -MWWW -e 'await (start get "https://perl6.org/") xx 4'
  ^C

  $ perl6 -MWWW -e 'await (start get "http://perl6.org/") xx 4'
  Segmentation fault
  $ perl6 -MWWW -e 'await (start get "http://perl6.org/") xx 4'
  Segmentation fault
  $ perl6 -MWWW -e 'await (start get "http://perl6.org/") xx 4'
  Segmentation fault

  $ perl6 -MWWW -e 'await (start get "http://zoffix.com/") xx 4'
  $ perl6 -MWWW -e 'await (start get "http://zoffix.com/") xx 4'
  $ perl6 -MWWW -e 'await (start get "http://zoffix.com/") xx 4'

From @zoffixznet

A reply from original bug discoverer that's on the mailing list, but didn't get onto the ticket, it seems​:

Hello,

I reduced that one down to​:

  perl6 -MOpenSSL -e 'await (start OpenSSL​::SSL​::SSL_library_init) xx 4'

This outputs​:

  *** Error in `.../moar'​: double free or corruption (!prev)​: ... ***

or​:

  ssl_ciph.c(417)​: OpenSSL internal error, assertion failed​: ssl_mac_secret_size[SSL_MD_MD5_IDX] >= 0

or it hangs.

Regards,
Cédric.

From @zoffixznet

On extra examination, it looks like the issue is simply due to OpenSSL not being thread-safe and there's an open Issue on it for the topic as well​: sergot/openssl#31

So, I think there's no Perl 6 problems here, so I'll close the ticket.

As for WWW module, I'll see about converting it to something thread safe in the future.

@zoffixznet - Status changed from 'new' to 'rejected'