From f8ef77af3bbd2690c81cffccdf40afe953c7e6a7 Mon Sep 17 00:00:00 2001
From: eileencodes <eileencodes@gmail.com>
Date: Wed, 17 Jan 2024 10:22:01 -0500
Subject: [Prism] Implement defined? for PM_INDEX_AND_WRITE_NODE

Ruby code:

```ruby
defined?([0][0] &&= 1)
```

Instructions:

```
"********* Ruby *************"
== disasm: #<ISeq:<compiled>@<compiled>:1 (1,0)-(59,58)>
0000 putobject                              "assignment"              (  59)[Li]
0002 leave
"********* PRISM *************"
== disasm: #<ISeq:<compiled>@<compiled>:58 (58,0)-(58,58)>
0000 putobject                              "assignment"              (  58)[Li]
0002 leave
```

Related: ruby/prism#2188
---
 test/ruby/test_compile_prism.rb | 1 +
 1 file changed, 1 insertion(+)

(limited to 'test/ruby')

diff --git a/test/ruby/test_compile_prism.rb b/test/ruby/test_compile_prism.rb
index 5e6b43d25a..d64cef57d8 100644
--- a/test/ruby/test_compile_prism.rb
+++ b/test/ruby/test_compile_prism.rb
@@ -245,6 +245,7 @@ module Prism
       assert_prism_eval("defined?(Prism::CPOWN += 1)")
       assert_prism_eval("defined?(Prism::CPOrWN ||= 1)")
       assert_prism_eval("defined?(Prism::CPWN = 1)")
+      assert_prism_eval("defined?([0][0] &&= 1)")
     end
 
     def test_GlobalVariableReadNode
-- 
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