Got this crash today:
--- NoMethodError from thread: periodic poll
undefined method `downcase' for nil:NilClass
/home/ash/.rvm/gems/ruby-1.8.7-p352/gems/rmail-1.0.0/lib/rmail/header.rb:537:in
`content_type'
/home/ash/.rvm/gems/ruby-1.8.7-p352/gems/sup-0.12.1/lib/sup/message.rb:427:in
`message_to_chunks'
/home/ash/.rvm/gems/ruby-1.8.7-p352/gems/sup-0.12.1/lib/sup/message.rb:427:in
`map'
/home/ash/.rvm/gems/ruby-1.8.7-p352/gems/sup-0.12.1/lib/sup/message.rb:427:in
`message_to_chunks'
/home/ash/.rvm/gems/ruby-1.8.7-p352/gems/sup-0.12.1/lib/sup/message.rb:259:in
`load_from_source!'
/home/ash/.rvm/gems/ruby-1.8.7-p352/gems/sup-0.12.1/lib/sup/message.rb:328:in
`build_from_source'
/home/ash/.rvm/gems/ruby-1.8.7-p352/gems/sup-0.12.1/lib/sup/poll.rb:158:in
`poll_from'
/home/ash/.rvm/gems/ruby-1.8.7-p352/gems/sup-0.12.1/lib/sup/mbox.rb:143:in
`poll'
/home/ash/.rvm/gems/ruby-1.8.7-p352/gems/sup-0.12.1/lib/sup/poll.rb:155:in
`poll_from'
/home/ash/.rvm/gems/ruby-1.8.7-p352/gems/sup-0.12.1/lib/sup/poll.rb:113:in
`do_poll'
/home/ash/.rvm/gems/ruby-1.8.7-p352/gems/sup-0.12.1/lib/sup/poll.rb:103:in
`each'
/home/ash/.rvm/gems/ruby-1.8.7-p352/gems/sup-0.12.1/lib/sup/poll.rb:103:in
`do_poll'
/home/ash/.rvm/gems/ruby-1.8.7-p352/gems/sup-0.12.1/lib/sup/poll.rb:102:in
`synchronize'
/home/ash/.rvm/gems/ruby-1.8.7-p352/gems/sup-0.12.1/lib/sup/poll.rb:102:in
`do_poll'
/home/ash/.rvm/gems/ruby-1.8.7-p352/gems/sup-0.12.1/lib/sup/util.rb:609:in
`send'
/home/ash/.rvm/gems/ruby-1.8.7-p352/gems/sup-0.12.1/lib/sup/util.rb:609:in
`method_missing'
/home/ash/.rvm/gems/ruby-1.8.7-p352/gems/sup-0.12.1/lib/sup/modes/poll-mode.rb:15:in
`poll'
/home/ash/.rvm/gems/ruby-1.8.7-p352/gems/sup-0.12.1/lib/sup/poll.rb:49:in
`poll_with_sources'
/home/ash/.rvm/gems/ruby-1.8.7-p352/gems/sup-0.12.1/lib/sup/poll.rb:68:in `poll'
/home/ash/.rvm/gems/ruby-1.8.7-p352/gems/sup-0.12.1/lib/sup/poll.rb:86:in
`start'
/home/ash/.rvm/gems/ruby-1.8.7-p352/gems/sup-0.12.1/lib/sup.rb:78:in
`reporting_thread'
/home/ash/.rvm/gems/ruby-1.8.7-p352/gems/sup-0.12.1/lib/sup.rb:76:in
`initialize'
/home/ash/.rvm/gems/ruby-1.8.7-p352/gems/sup-0.12.1/lib/sup.rb:76:in `new'
/home/ash/.rvm/gems/ruby-1.8.7-p352/gems/sup-0.12.1/lib/sup.rb:76:in
`reporting_thread'
/home/ash/.rvm/gems/ruby-1.8.7-p352/gems/sup-0.12.1/lib/sup/poll.rb:83:in
`start'
/home/ash/.rvm/gems/ruby-1.8.7-p352/gems/sup-0.12.1/lib/sup/util.rb:609:in
`send'
/home/ash/.rvm/gems/ruby-1.8.7-p352/gems/sup-0.12.1/lib/sup/util.rb:609:in
`method_missing'
/home/ash/.rvm/gems/ruby-1.8.7-p352/gems/sup-0.12.1/bin/sup:222
/home/ash/.rvm/gems/ruby-1.8.7-p352/bin/sup:19:in `load'
/home/ash/.rvm/gems/ruby-1.8.7-p352/bin/sup:19
Seems like rmail doesn't really like an empty "Content-Type: " header:
rmail/header.rb:
def content_type(default = nil)
if value = self['content-type']
value.strip.split(/\s*;\s*/)[0].downcase # <== crashes on value=""
else
if block_given?
yield
else
default
end
end
end
Adding (... || "") before downcase seems to help this crash.
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