Bug #13964: [BUG] Stack consistency error

• Status: Closed
• Assignee: -
• Target version: -
• ruby -v: ruby 2.4.2p198 (2017-09-14 revision 59899) [x86_64-linux]
• Backport: 2.3: DONE, 2.4: DONE

[md1961 (Naoyuki Kumagai)]

You get "[BUG] Stack consistency error" when you run attached 'bug_repro.rb'.

If you change line 44 in the script

option_draw&.weight *= 2

to

option_draw.weight *= 2 if option_draw

you get no error.

Also if you change line 63 in the script

2.times do |age|

to

1.times do |age|

you get no error neither.

Thank you in advance.

[nobu (Nobuyoshi Nakada)]

• Backport changed from 2.3: UNKNOWN, 2.4: UNKNOWN to 2.3: REQUIRED, 2.4: REQUIRED

[nobu (Nobuyoshi Nakada)]

• Status changed from Open to Closed

Applied in changeset trunk|r60099.

---

compile.c: fix stack consitency error

• compile.c (iseq_compile_each0): fix stack consitency error on
  attr-assign with safe navigation operator when the receiver is
  nil, should pop it too. [ruby-core:83078] [Bug #13964]

[nagachika (Tomoyuki Chikanaga)]

• Backport changed from 2.3: REQUIRED, 2.4: REQUIRED to 2.3: REQUIRED, 2.4: DONE

ruby_2_4 r61439 merged revision(s) 60099,60100.

[usa (Usaku NAKAMURA)]

• Backport changed from 2.3: REQUIRED, 2.4: DONE to 2.3: DONE, 2.4: DONE

ruby_2_3 r62135 merged revision(s) 60099,60100.