diff options
Diffstat (limited to 'lib/rubygems/specification.rb')
-rw-r--r-- | lib/rubygems/specification.rb | 22 |
1 files changed, 19 insertions, 3 deletions
diff --git a/lib/rubygems/specification.rb b/lib/rubygems/specification.rb index d8a212a04a..56db0945eb 100644 --- a/lib/rubygems/specification.rb +++ b/lib/rubygems/specification.rb @@ -1272,10 +1272,26 @@ class Gem::Specification < Gem::BasicSpecification array = begin Marshal.load str rescue ArgumentError => e - raise unless e.message.include?("YAML") + # + # Some very old marshaled specs included references to `YAML::PrivateType` + # and `YAML::Syck::DefaultKey` constants due to bugs in the old emitter + # that generated them. Workaround the issue by defining the necessary + # constants and retrying. + # + message = e.message + raise unless message.include?("YAML::") + + Object.const_set "YAML", Psych unless Object.const_defined?(:YAML) + + if message.include?("YAML::Syck::") + YAML.const_set "Syck", YAML unless YAML.const_defined?(:Syck) + + YAML::Syck.const_set "DefaultKey", Class.new if message.include?("YAML::Syck::DefaultKey") + elsif message.include?("YAML::PrivateType") + YAML.const_set "PrivateType", Class.new + end - Object.const_set "YAML", Psych - Marshal.load str + retry end spec = Gem::Specification.new |