[Bug #20989] Ripper: Pass `compile_error`

For the universal parser, `rb_parser_reg_fragment_check` function is
shared between the parser and ripper.  However `parser_params` struct
is partially different, and `compile_error` function depends on that
part indirectly.

1 files changed, 15 insertions, 0 deletions

diff --git a/test/ripper/test_ripper.rb b/test/ripper/test_ripper.rb
index 0d3e33dde6..414ce83b7d 100644
--- a/test/ripper/test_ripper.rb
+++ b/test/ripper/test_ripper.rb
@@ -155,6 +155,18 @@ end
     end;
   end
 
+  def test_invalid_multibyte_character_in_regexp
+    lex = Ripper.lex(%q[/#{"\xcd"}/])
+    assert_equal([[1, 0], :on_regexp_beg, "/", state(:EXPR_BEG)], lex.shift)
+    assert_equal([[1, 1], :on_embexpr_beg, "\#{", state(:EXPR_BEG)], lex.shift)
+    assert_equal([[1, 3], :on_tstring_beg, "\"", state(:EXPR_BEG)], lex.shift)
+    assert_equal([[1, 4], :on_tstring_content, "\\xcd", state(:EXPR_BEG)], lex.shift)
+    assert_equal([[1, 8], :on_tstring_end, "\"", state(:EXPR_END)], lex.shift)
+    assert_equal([[1, 9], :on_embexpr_end, "}", state(:EXPR_END)], lex.shift)
+    assert_equal([[1, 10], :on_regexp_end, "/", state(:EXPR_BEG)], lex.shift)
+    assert_empty(lex)
+  end
+
   def test_no_memory_leak
     assert_no_memory_leak(%w(-rripper), "", "#{<<~'end;'}", rss: true)
       2_000_000.times do
@@ -202,4 +214,7 @@ end
     end
   end
 
+  def state(name)
+    Ripper::Lexer::State.new(Ripper.const_get(name))
+  end
 end if ripper_test