Guard match from GC in String#gsub

We need to guard match from GC because otherwise it could end up being
reclaimed or moved in compaction.

1 files changed, 12 insertions, 0 deletions

diff --git a/test/ruby/test_string.rb b/test/ruby/test_string.rb
index fdf23ad90b..2ccabcbe80 100644
--- a/test/ruby/test_string.rb
+++ b/test/ruby/test_string.rb
@@ -1249,6 +1249,10 @@ CODE
     assert_raise(ArgumentError) { S("foo").gsub }
   end
 
+  def test_gsub_gc_compact_stress
+    EnvUtil.under_gc_compact_stress { assert_equal(S("h<e>ll<o>"), S("hello").gsub(/([aeiou])/, S('<\1>'))) }
+  end
+
   def test_gsub_encoding
     a = S("hello world")
     a.force_encoding Encoding::UTF_8
@@ -1292,6 +1296,14 @@ CODE
     assert_nil(a.sub!(S('X'), S('Y')))
   end
 
+  def test_gsub_bang_gc_compact_stress
+    EnvUtil.under_gc_compact_stress do
+      a = S("hello")
+      a.gsub!(/([aeiou])/, S('<\1>'))
+      assert_equal(S("h<e>ll<o>"), a)
+    end
+  end
+
   def test_sub_hash
     assert_equal('azc', S('abc').sub(/b/, "b" => "z"))
     assert_equal('ac', S('abc').sub(/b/, {}))