diff options
| author | Nobuyoshi Nakada <[email protected]> | 2024-05-23 11:23:26 -0700 |
|---|---|---|
| committer | Aaron Patterson <[email protected]> | 2024-05-23 12:11:50 -0700 |
| commit | 49fcd33e136ee2fe8720183b63a41bb6ef8d615c (patch) | |
| tree | e089550455a8116beb379eb1e8b6f4e87652879b /test/ruby | |
| parent | e5e079e70f8b07697f7cc3f64736f993755500cb (diff) | |
Introduce a specialize instruction for Array#pack
Instructions for this code:
```ruby
# frozen_string_literal: true
[a].pack("C")
```
Before this commit:
```
== disasm: #<ISeq:<main>@test.rb:1 (1,0)-(3,13)>
0000 putself ( 3)[Li]
0001 opt_send_without_block <calldata!mid:a, argc:0, FCALL|VCALL|ARGS_SIMPLE>
0003 newarray 1
0005 putobject "C"
0007 opt_send_without_block <calldata!mid:pack, argc:1, ARGS_SIMPLE>
0009 leave
```
After this commit:
```
== disasm: #<ISeq:<main>@test.rb:1 (1,0)-(3,13)>
0000 putself ( 3)[Li]
0001 opt_send_without_block <calldata!mid:a, argc:0, FCALL|VCALL|ARGS_SIMPLE>
0003 putobject "C"
0005 opt_newarray_send 2, :pack
0008 leave
```
Co-authored-by: Maxime Chevalier-Boisvert <[email protected]>
Co-authored-by: Aaron Patterson <[email protected]>
Diffstat (limited to 'test/ruby')
| -rw-r--r-- | test/ruby/test_pack.rb | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/test/ruby/test_pack.rb b/test/ruby/test_pack.rb index 1ce46e8916..a0c66c188b 100644 --- a/test/ruby/test_pack.rb +++ b/test/ruby/test_pack.rb @@ -895,4 +895,22 @@ EXPECTED } assert_equal [nil], "a".unpack("C", offset: 1) end + + def test_monkey_pack + assert_separately([], <<-'end;') + $-w = false + class Array + alias :old_pack :pack + def pack _; "oh no"; end + end + + v = [2 ** 15].pack('n') + + class Array + alias :pack :old_pack + end + + assert_equal "oh no", v + end; + end end |