From 88aee8b2006cf3098c06f14ade80b99482bc4bd3 Mon Sep 17 00:00:00 2001
From: Brandon Fish <brandon.j.fish@gmail.com>
Date: Fri, 10 Jan 2020 10:48:07 -0600
Subject: [PATCH] Update ripper_supported? for truffleruby and ripper specs to
 allow exceptions

---
 lib/rspec/support/ruby_features.rb       |  6 +++++-
 spec/rspec/support/ruby_features_spec.rb | 26 ++++++++++++++++--------
 2 files changed, 22 insertions(+), 10 deletions(-)

diff --git a/lib/rspec/support/ruby_features.rb b/lib/rspec/support/ruby_features.rb
index 20e58075a..ea4033df6 100644
--- a/lib/rspec/support/ruby_features.rb
+++ b/lib/rspec/support/ruby_features.rb
@@ -47,6 +47,10 @@ def non_mri?
       def mri?
         !defined?(RUBY_ENGINE) || RUBY_ENGINE == 'ruby'
       end
+
+      def truffleruby?
+        defined?(RUBY_ENGINE) && RUBY_ENGINE == 'truffleruby'
+      end
     end
 
     # @api private
@@ -101,7 +105,7 @@ def supports_taint?
       end
       ripper_requirements = [ComparableVersion.new(RUBY_VERSION) >= '1.9.2']
 
-      ripper_requirements.push(false) if Ruby.rbx?
+      ripper_requirements.push(false) if Ruby.rbx? || Ruby.truffleruby?
 
       if Ruby.jruby?
         ripper_requirements.push(Ruby.jruby_version >= '1.7.5')
diff --git a/spec/rspec/support/ruby_features_spec.rb b/spec/rspec/support/ruby_features_spec.rb
index 10fc1525e..8d81bd914 100644
--- a/spec/rspec/support/ruby_features_spec.rb
+++ b/spec/rspec/support/ruby_features_spec.rb
@@ -126,21 +126,29 @@ def ripper_works_correctly?
         # https://github.com/jruby/jruby/issues/3386
         def ripper_reports_correct_line_number?
           in_sub_process_if_possible do
-            require 'ripper'
-            tokens = ::Ripper.lex('foo')
-            token = tokens.first
-            location = token.first
-            line_number = location.first
-            line_number == 1
+            begin
+              require 'ripper'
+              tokens = ::Ripper.lex('foo')
+              token = tokens.first
+              location = token.first
+              line_number = location.first
+              line_number == 1
+            rescue
+              false
+            end
           end
         end
 
         # https://github.com/jruby/jruby/issues/4562
         def ripper_can_parse_source_including_keywordish_symbol?
           in_sub_process_if_possible do
-            require 'ripper'
-            sexp = ::Ripper.sexp(':if')
-            !sexp.nil?
+            begin
+              require 'ripper'
+              sexp = ::Ripper.sexp(':if')
+              !sexp.nil?
+            rescue
+              false
+            end
           end
         end