https://git.ruby-lang.org/ruby.git/commit/?id=d192b149ba

From d192b149ba5b6f0bb8222519793a59b60c637f78 Mon Sep 17 00:00:00 2001
From: Maxime Chevalier-Boisvert <maxime.chevalierboisvert@s...>
Date: Fri, 12 Feb 2021 14:35:57 -0500
Subject: Added more tests to `make btest`

---
 bootstraptest/test_ujit.rb | 123 ++++++++++++++++++++++++++++++++++-----------
 1 file changed, 93 insertions(+), 30 deletions(-)

diff --git a/bootstraptest/test_ujit.rb b/bootstraptest/test_ujit.rb
index 0894a1b4e2..65e20fa117 100644
--- a/bootstraptest/test_ujit.rb
+++ b/bootstraptest/test_ujit.rb
@@ -10,51 +10,36 @@ assert_equal '2', %q{ https://github.com/ruby/ruby/blob/trunk/bootstraptest/test_ujit.rb#L10
     check_index 2
 }
 
-# Method redefinition (code invalidation) test
-assert_equal '1', %q{
-    def ret1
-        return 1
-    end
-
-    klass = Class.new do
-        def alias_then_hash(klass, method_to_redefine)
-            # Redefine the method to be ret1
-            klass.alias_method(method_to_redefine, :ret1)
-            hash
-        end
+# foo leaves a temp on the stack before the call
+assert_equal '6', %q{
+    def bar
+        return 5
     end
 
-    instance = klass.new
-
-    i = 0
-    while i < 12
-        if i < 11
-            # Redefine the bar method
-            instance.alias_then_hash(klass, :bar)
-        else
-            # Redefine the hash method to be ret1
-            retval = instance.alias_then_hash(klass, :hash)
-        end
-        i += 1
+    def foo
+        return 1 + bar
     end
 
-    retval
+    foo()
+    retval = foo()
 }
 
+# Method with one arguments
 # foo leaves a temp on the stack before the call
-assert_equal '6', %q{
-    def bar
-        return 5
+assert_equal '7', %q{
+    def bar(a)
+        return a + 1
     end
 
     def foo
-        return 1 + bar
+        return 1 + bar(5)
     end
 
     foo()
     retval = foo()
 }
 
+# Method with two arguments
 # foo leaves a temp on the stack before the call
 assert_equal '0', %q{
     def bar(a, b)
@@ -71,7 +56,6 @@ assert_equal '0', %q{ https://github.com/ruby/ruby/blob/trunk/bootstraptest/test_ujit.rb#L56
 
 # Recursive Ruby-to-Ruby calls
 assert_equal '21', %q{
-
     def fib(n)
         if n < 2
             return n
@@ -97,6 +81,85 @@ assert_normal_exit %q{ https://github.com/ruby/ruby/blob/trunk/bootstraptest/test_ujit.rb#L81
   foo()
 }
 
+# Method redefinition (code invalidation) test
+assert_equal '1', %q{
+    def ret1
+        return 1
+    end
+
+    klass = Class.new do
+        def alias_then_hash(klass, method_to_redefine)
+            # Redefine the method to be ret1
+            klass.alias_method(method_to_redefine, :ret1)
+            hash
+        end
+    end
+
+    instance = klass.new
+
+    i = 0
+    while i < 12
+        if i < 11
+            # Redefine the bar method
+            instance.alias_then_hash(klass, :bar)
+        else
+            # Redefine the hash method to be ret1
+            retval = instance.alias_then_hash(klass, :hash)
+        end
+        i += 1
+    end
+
+    retval
+}
+
+# Method redefinition (code invalidation) and GC 
+assert_equal '7', %q{
+    def bar()
+        return 5
+    end
+
+    def foo()
+        bar()
+    end
+
+    foo()
+    foo()
+
+    def bar()
+        return 7
+    end
+
+    4.times { GC.start }
+
+    foo()
+    foo()
+}
+
+# Method redefinition with two block versions
+assert_equal '7', %q{
+    def bar()
+        return 5
+    end
+
+    def foo(n)
+        return ((n < 5)? 5:false), bar()
+    end
+
+    foo(4)
+    foo(4)
+    foo(10)
+    foo(10)
+
+    def bar()
+        return 7
+    end
+
+    4.times { GC.start }
+
+    foo(4)
+    foo(4)[1]
+}
+
 # Test for GC safety. Don't invalidate dead iseqs.
 assert_normal_exit %q{
   Class.new do
-- 
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