Bug #11012: `local_variable_get` crashes on a `Proc` from a method

• Status: Closed
• Assignee: nobu (Nobuyoshi Nakada)
• Target version: -
• ruby -v: 50107
• Backport: 2.0.0: DONTNEED, 2.1: DONTNEED, 2.2: DONE

[nobu (Nobuyoshi Nakada)]

The following code shows unexpected random object, or segfaults sometimes.

class << (obj = Object.new)
  src = 1000.times.map {|i|"v#{i} = "}.join("")
  eval("def foo()\n""#{src}nil\n""end")
end

b = obj.method(:foo).to_proc.binding
p b.local_variable_get("v999")

[nobu (Nobuyoshi Nakada)]

• Status changed from Open to Closed
• % Done changed from 0 to 100

Applied in changeset r50111.

---

proc.c: replicate method env

• proc.c (proc_binding): replicate env from method object, and
  allocate the local variable area for the iseq local table.
  [ruby-core:68673] [Bug #11012]

[nagachika (Tomoyuki Chikanaga)]

• Backport changed from 2.0.0: DONTNEED, 2.1: DONTNEED, 2.2: REQUIRED to 2.0.0: DONTNEED, 2.1: DONTNEED, 2.2: DONE

r49922, r50111 and r50112 (r49922 for resolv conflict) were backported into ruby_2_2 branch at r50548.