Ruby Issue Tracking System

10/09/2026

11:07 PM Ruby Revision 15212f6c (git): [Bug #22416] Respect timezone abbreviation encodings in strftime

Timezone objects can return abbreviations in encodings beyond the
locale. Respect their encoding when formatting `%Z` to avoid
misinterpreting their bytes. nobu (Nobuyoshi Nakada)

11:07 PM Ruby Revision 9568b5df (git): [Bug #22388] Fix use-after-free in some `Enumerable` methods

nobu (Nobuyoshi Nakada)

11:07 PM Ruby Revision bd154f04 (git): [Bug #22388] Fix use-after-free in `Enumerable#sum`

nobu (Nobuyoshi Nakada)

11:07 PM Ruby Revision 566e6dc8 (git): [Bug #22388] Fix use-after-free in `Enumerator::Lazy#flat_map`

nobu (Nobuyoshi Nakada)

11:07 PM Ruby Revision ccccb044 (git): [Bug #22388] Fix use-after-free in `Set#&`

nobu (Nobuyoshi Nakada)

11:06 PM Ruby Revision 831f43b9 (git): [Bug #22335] Use identity hashes for keyword argument tracking

With more than 31 keyword arguments, tracking unevaluated defaults
uses an integer-keyed Hash whose collisions can invoke methods when
`Integer#==` is refined or redefined, corrupting argument locals above
`cfp->sp`. Use identity hashes... nobu (Nobuyoshi Nakada)

11:06 PM Ruby Revision 2374bd21 (git): [Bug #22340] Fix stat on symbolic-link loops on Windows

Preserve `ELOOP` instead of hiding symbolic-link resolution errors
with the file-enumeration fallback, so existence checks return false. nobu (Nobuyoshi Nakada)

11:06 PM Ruby Revision db1082f4 (git): [Bug #22322] Take transcoder names from declared transcoders

Fix use-after-free of dangling pointers. nobu (Nobuyoshi Nakada)

02:19 PM Ruby Revision e07ffd84 (git): [ruby/io-console] Remove unexpected newlines in win32_vk rules

https://github.com/ruby/io-console/commit/4253e6709e nobu (Nobuyoshi Nakada)

10/08/2026

02:02 PM Ruby Revision c86bd177 (git): Cast to enum

```
../src/io_buffer.c(609): warning C5286: implicit conversion from enum type '' to enum type 'rb_io_buffer_flags'; use an explicit cast to silence this warning
``` nobu (Nobuyoshi Nakada)