1 files changed, 53 insertions, 0 deletions
diff --git a/gnu/packages/patches/ruby-symlinkfix.patch b/gnu/packages/patches/ruby-symlinkfix.patch
new file mode 100644
index 0000000000..16beecc97a
--- /dev/null
+++ b/gnu/packages/patches/ruby-symlinkfix.patch
@@ -0,0 +1,53 @@
+Fix symlinks to '..' to fix rubygems improperly expanding symlinked
+paths. Without this fix, some gems fail to install. This patch is applied in
+rubygems 2.5.2, but ruby version 2.3.1 bundles an older version of rubygems
+(2.5.1).
+
+--- a/lib/rubygems/package.rb
++++ b/lib/rubygems/package.rb
+@@ -383,7 +383,7 @@ def extract_tar_gz io, destination_dir, pattern = "*" # :nodoc:
+           FileUtils.chmod entry.header.mode, destination
+         end if entry.file?
+
+-        File.symlink(install_location(entry.header.linkname, destination_dir), destination) if entry.symlink?
++        File.symlink(entry.header.linkname, destination) if entry.symlink?
+
+         verbose destination
+       end
+diff --git a/test/rubygems/test_gem_package.rb b/test/rubygems/test_gem_package.rb
+index 7848bc2..f287bd3 100644
+--- a/test/rubygems/test_gem_package.rb
++++ b/test/rubygems/test_gem_package.rb
+@@ -428,19 +428,25 @@ def test_extract_tar_gz_absolute
+                  "#{@destination} is not allowed", e.message)
+   end
+
+-  def test_extract_tar_gz_symlink_absolute
++  def test_extract_tar_gz_symlink_relative_path
++    skip 'symlink not supported' if Gem.win_platform?
++
+     package = Gem::Package.new @gem
+
+     tgz_io = util_tar_gz do |tar|
+-      tar.add_symlink 'code.rb', '/absolute.rb', 0644
++      tar.add_file    'relative.rb', 0644 do |io| io.write 'hi' end
++      tar.mkdir       'lib',         0755
++      tar.add_symlink 'lib/foo.rb', '../relative.rb', 0644
+     end
+
+-    e = assert_raises Gem::Package::PathError do
+-      package.extract_tar_gz tgz_io, @destination
+-    end
++    package.extract_tar_gz tgz_io, @destination
+
+-    assert_equal("installing into parent path /absolute.rb of " +
+-                 "#{@destination} is not allowed", e.message)
++    extracted = File.join @destination, 'lib/foo.rb'
++    assert_path_exists extracted
++    assert_equal '../relative.rb',
++                 File.readlink(extracted)
++    assert_equal 'hi',
++                 File.read(extracted)
+   end
+
+   def test_extract_tar_gz_directory