Merge pull request #8966 from tenderlove/copy-stream

Pass a file size to `IO.copy_stream`

Author: simi

lib/rubygems/package.rb

@@ -267,7 +267,7 @@ def add_files(tar) # :nodoc:
 
       tar.add_file_simple file, stat.mode, stat.size do |dst_io|
         File.open file, "rb" do |src_io|
-          copy_stream(src_io, dst_io)
+          copy_stream(src_io, dst_io, stat.size)
         end
       end
     end
@@ -452,7 +452,7 @@ def extract_tar_gz(io, destination_dir, pattern = "*") # :nodoc:
 
         if entry.file?
           File.open(destination, "wb") do |out|
-            copy_stream(entry, out)
+            copy_stream(entry, out, entry.size)
             # Flush needs to happen before chmod because there could be data
             # in the IO buffer that needs to be written, and that could be
             # written after the chmod (on close) which would mess up the perms
@@ -721,12 +721,12 @@ def verify_gz(entry) # :nodoc:
   end
 
   if RUBY_ENGINE == "truffleruby"
-    def copy_stream(src, dst) # :nodoc:
-      dst.write src.read
+    def copy_stream(src, dst, size) # :nodoc:
+      dst.write src.read(size)
     end
   else
-    def copy_stream(src, dst) # :nodoc:
-      IO.copy_stream(src, dst)
+    def copy_stream(src, dst, size) # :nodoc:
+      IO.copy_stream(src, dst, size)
     end
   end