1 files changed, 4 insertions, 0 deletions
@@ -728,6 +728,10 @@ class Gem::Installer
 raise Gem::InstallError, "#{spec} has an invalid extensions"
 end
 unless spec.specification_version.to_s =~ /\A\d+\z/
 raise Gem::InstallError, "#{spec} has an invalid specification_version"
 end