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List:       ruby-core
Subject:    [ruby-core:110555] [Ruby master Bug#19095] use-after-poison with shapes
From:       "nobu (Nobuyoshi Nakada)" <noreply () ruby-lang ! org>
Date:       2022-10-31 5:56:48
Message-ID: redmine.issue-19095.20221031055647.4 () ruby-lang ! org
[Download RAW message or body]

Issue #19095 has been reported by nobu (Nobuyoshi Nakada).

----------------------------------------
Bug #19095: use-after-poison with shapes
https://bugs.ruby-lang.org/issues/19095

* Author: nobu (Nobuyoshi Nakada)
* Status: Open
* Priority: Normal
* Assignee: tenderlovemaking (Aaron Patterson)
* Target version: 3.2
* ruby -v: ruby 3.2.0dev (2022-10-30T14:21:31Z master 7ed10abdd9) [x86_64-darwin21]
* Backport: 2.7: UNKNOWN, 3.0: UNKNOWN, 3.1: UNKNOWN
----------------------------------------
Compiling with the clang address sanitizer and the following patch, `make \
BASERUBY='$(MINIRUBY)' golf_prelude.c` aborts by use-after-poison. I can't make \
minimum code yet.

```patch
diff --git i/template/prelude.c.tmpl w/template/prelude.c.tmpl
index 428c9f4d014..7d4c3505d88 100644
--- i/template/prelude.c.tmpl
+++ w/template/prelude.c.tmpl
@@ -77,7 +77,7 @@ class Prelude
     result
   end
 end
-Prelude.new(output, ARGV, vpath).instance_eval do
+p(Prelude.new(output, ARGV, vpath)).instance_eval do
 -%>
 /* -*-c-*-
  THIS FILE WAS AUTOGENERATED BY template/prelude.c.tmpl. DO NOT EDIT.
```


---Files--------------------------------
use-after-poison.txt (5.51 KB)


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