Fix IO.try_convert parameter conversion

bjfish · bjfish · commit 66c5f205cb07 · 2020-01-16T13:18:52.000-06:00
diff --git a/CHANGELOG.md b/CHANGELOG.md
@@ -72,6 +72,7 @@ Bug fixes:
 * Fixed character length after conversion to binary from a non-US-ASCII String.
 * Fixed issue with installing latest bundler (#1880).
 * Fixed type conversion for `Numeric#step` `step` parameter.
+* Fixed `IO.try_convert` parameter conversion.
 
 Compatibility:
 
diff --git a/spec/tags/core/io/try_convert_tags.txt b/spec/tags/core/io/try_convert_tags.txt
diff --git a/src/main/ruby/truffleruby/core/io.rb b/src/main/ruby/truffleruby/core/io.rb
@@ -650,7 +650,7 @@ def self.read(name, length_or_options=undefined, offset=0, options=nil)
   end
 
   def self.try_convert(obj)
-    Truffle::Type.try_convert obj, IO, :to_io
+    Truffle::Type.rb_check_convert_type obj, IO, :to_io
   end
 
   def self.normalize_options(mode, options)
