25 Apr
2024
25 Apr
'24
9:50 a.m.
Issue #20452 has been updated by Earlopain (A S).
nobu (Nobuyoshi Nakada) wrote in #note-5:
Does this help you?
https://github.com/nobu/ruby/tree/mainstackaddr
Thank you. I tried it out with your patch but something is missing still. Building with
`make DEFS=-DMAINSTACKADDR_AVAILABLE=0` from your comment above works wonderfully though.
I believe `HAVE_PTHREAD_GETATTR_NP` may be defined? In `configure.log` I see
`HAVE_PTHREAD_GETATTR_NP=1` a few times.
https://git.musl-libc.org/cgit/musl/tree/src/thread/pthread_getattr_np.c
----------------------------------------
Bug #20452: Ruby 3.3 on Alpine Linux results in a relatively shallow SystemStackError
exception
https://bugs.ruby-lang.org/issues/20452#change-108118
* Author: Earlopain (A S)
* Status: Feedback
* ruby -v: 3.3.1
* Backport: 3.0: UNKNOWN, 3.1: UNKNOWN, 3.2: UNKNOWN, 3.3: UNKNOWN
----------------------------------------
This is a redo of https://bugs.ruby-lang.org/issues/14387, reported against a non-eol
version. The same issue still applies on recent rubies, though I personally only have
tested 3.3 and 3.2:
```rb
n = 100000
res = {}
1.upto(n).to_a.inject(res) do |r, i|
r[i] = {}
end
def f(x)
x.each_value { |v| f(v) }
end
f(res)
```
The patch from https://bugs.ruby-lang.org/issues/14387#note-13 still works, though as per
https://bugs.ruby-lang.org/issues/14387#note-16 it can't be accepted as is.
With the patch applied:
```
(irb):8:in `block in f': stack level too deep (SystemStackError)
from (irb):8:in `each_value'
from (irb):8:in `f'
from (irb):8:in `block in f'
from (irb):8:in `each_value'
from (irb):8:in `f'
from (irb):8:in `block in f'
from (irb):8:in `each_value'
from (irb):8:in `f'
... 11549 levels...
from /usr/local/lib/ruby/gems/3.3.0/gems/irb-1.11.0/exe/irb:9:in `<top
(required)>'
from /usr/local/bin/irb:25:in `load'
from /usr/local/bin/irb:25:in `<main>'
```
Without the patch:
```
(irb):8:in `each_value': stack level too deep (SystemStackError)
from (irb):8:in `f'
from (irb):8:in `block in f'
from (irb):8:in `each_value'
from (irb):8:in `f'
from (irb):8:in `block in f'
from (irb):8:in `each_value'
from (irb):8:in `f'
from (irb):8:in `block in f'
... 286 levels...
from /usr/local/lib/ruby/gems/3.3.0/gems/irb-1.11.0/exe/irb:9:in `<top
(required)>'
from /usr/local/bin/irb:25:in `load'
from /usr/local/bin/irb:25:in `<main>'
```
To reproduce, I have removed lines 102-105 from
https://github.com/docker-library/ruby/blob/f5753434bb23041dd9913bb7b650e7b….
Check out the previous ticket for more information, there are a few conversations about
possible solutions.
--
https://bugs.ruby-lang.org/