Pathname#initialize should raise TypeError if coercion fails

eregon · eregon · commit 96000f606103 · 2025-08-23T14:06:17.000+02:00
* Found by ruby/spec, and confirmed pathname.c did the same.
diff --git a/lib/pathname.rb b/lib/pathname.rb
@@ -238,7 +238,11 @@ class Pathname
   # If +path+ contains a NUL character (<tt>\0</tt>), an ArgumentError is raised.
   #
   def initialize(path)
-    path = path.to_path if path.respond_to? :to_path
+    unless String === path
+      path = path.to_path if path.respond_to? :to_path
+      raise TypeError unless String === path
+    end
+
     if path.include?("\0")
       raise ArgumentError, "pathname contains \\0: #{path.inspect}"
     end
