Fix io#read

It always returns `String` if `length` is not given or `nil` is given.
ruby · Dec 20, 2023 · 75b97a6 · 75b97a6
1 parent 851c63b
commit 75b97a6
Showing 1 changed file with 2 additions and 1 deletion.
diff --git a/core/io.rbs b/core/io.rbs
@@ -1532,7 +1532,8 @@ class IO < Object
   #
   # Related: IO#write.
   #
-  def read: (?int? length, ?string outbuf) -> String?
+  def read: (?nil, ?string outbuf) -> String
+          | (int? length, ?string outbuf) -> String?
 
   # <!--
   #   rdoc-file=io.rb