Activity
From 06/21/2026 to 06/27/2026
Today
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04:01 PM Feature #22132: Scala-like for comprehensions
- I agree with @zverok, this looks very much *not* Ruby-like to me.
I also see no need for it.
It feels more like Python or Scala.
Python has `for` comprehensions because it doesn't even have a decent `map` or `filter` (only as a top-level... -
10:27 AM Feature #22132: Scala-like for comprehensions
- Thanks for the feedback.
I agree that "you rarely need `for`, think in Enumerable" is core to how Ruby is taught, and I don't want to weaken that.
But I think the "what is Enumerable missing?" framing misses the point here. This pr... -
06:27 AM Feature #22132: Scala-like for comprehensions
- TBH, in all my years with Ruby, it felt for me as its deep characteristic that "you never need `for`, think in enumerables."
I believe that introducing "`for` that is useful for some complex cases" will dilute this image. Ruby is alm... - 08:43 AM Revision 3c7a4c17 (git): Use $(PATH_SEPARATOR) for test-syntax-suggest -I on mswin
- The recipe moved into common.mk kept the literal `-Ispec/syntax_suggest:spec/lib`
from template/Makefile.in. On Windows Ruby treats `:` as an invalid path
separator (the drive-letter delimiter), so spec_helper fails to load and the
mswin... - 08:43 AM Revision ef4626e5 (git): Move test-syntax-suggest recipe from template/Makefile.in to common.mk
- template/Makefile.in is used only by the GNU make build, so on mswin the
common.mk stub was an empty rule and nmake check silently skipped the
SyntaxSuggest spec. Move the recipe to common.mk so both builds share it,
matching how test-bu... - 07:42 AM Revision 689f370c (git): Update bundled gems list as of 2026-06-26
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06:40 AM Feature #22130: Add a new YARV instruction for a `String.new` fast path
- I support this. When working with low-level code that need to buffer IOs for parsing, it's very useful to be in control of the buffer size.
However what I found is that the overhead of argument handling when calling `String.new(capaci... -
- * [Feature #22085] `String#to_f` and `Kernel#Float` shouldn't issue out of range warnings
* Here is another example of the warning needing to be worked around: https://github.com/ruby/json/pull/1044 - 06:16 AM Revision 0db07b1a (git): [ruby/json] Avoid Float out of range warning for clearly underflowing numbers
- When parsing JSON floats with extremely negative exponents (like
123.456e-789 or 123e-10000000), the parser would fall back to
rb_cstr_to_dbl which internally calls strtod. When strtod returns
ERANGE due to underflow to 0.0, Ruby emits a... -
- Another case of this warning needing to be worked around: https://github.com/ruby/json/pull/1044
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03:27 AM Revision 39119598 (git): [DOC] Update Set#classify documentation
- Co-authored-by: Jeremy Evans <code@jeremyevans.net>
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- Co-authored-by: Jeremy Evans <code@jeremyevans.net>
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- Co-authored-by: Jeremy Evans <code@jeremyevans.net>
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06/26/2026
-
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- * [Feature #22132] Scala-like for comprehensions
* Are `then` and `when` acceptable? (`yield` and `if` are not usable due to grammar conflicts)
* Should a comprehension scope loop variables, or leak them like `for ... do`?
* Guards... -
11:34 PM Revision 010de50c (git): ZJIT: Add perf symbol for block padding (#17517)
- * ZJIT: Add perf symbol for block padding
* ZJIT: Explain HIR-only padding perf symbols -
11:32 PM Revision ee74bca0 (git): Make ROBJECT_FIELDS private
- Commit 0ea210d renamed ROBJECT_IVPTR to ROBJECT_FIELDS, so it would have
caused compatibility issues anyways. Since there has been no issues, it
means that nobody is using it. We can make this dangerous API private since
no C extension s... -
- ## Abstract
How about adding an expression form of `for` that desugars into nested `flat_map`/`map` and `filter` calls.
Here's an example, which computes all pairs of numbers between `0` and `n-1` whose sum is equal to a given valu... - 11:13 PM Revision baa3b26a (git): ZJIT: Reuse instruction profiling for recompile exits (#17457)
- * ZJIT: Reuse instruction profiling for recompile exits
Deduplicate recompile-exit profiling by sharing the per-instruction
profiling logic used by zjit_* instructions.
Recompile exits now use the materialized CFP state to recover the
... -
- Co-authored-by: Jeremy Evans <code@jeremyevans.net>
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- Co-authored-by: Jeremy Evans <code@jeremyevans.net>
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10:47 PM Revision 88c8877a (git): ZJIT: Comment that we basically never add to test_zjit.rb now [DOC]
- Good for the humans and agents.
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09:34 PM Revision 48ac7268 (git): [Bug #22124] Add block to the proper node
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09:34 PM Revision e4c52b41 (git): [Bug #22126] Fix partial DCE with loop back-edges
- The old `remove_unreachable_chunk` walked the dead code once and tried
to do two things at the same time -- count label references inside that
chunk and figure out what exactly to delete.
That breaks for loops -- the loop label comes be... -
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09:29 PM Revision 2bf4c08b (git): IO::Buffer#locked: Release lock even when the block raises (#16180)
- IO::Buffer#locked: Release lock even when the block raises/breaks
Previously, `IO::Buffer#locked` leaks the lock when the block raises
an exception, or breaks.
Fixes: [Bug #21882] -
09:26 PM Bug #21996: Crash when modifying instance variables during inspect or Marshal dump
- ruby_4_0 commit:6fd2ae629a40353a3f377718544e1a3ee7a1ab65 merged revision(s) commit:f2d0ef269b47af7d0e658016903bd8917c32899a.
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- Backport PR for ruby_4_0 (4.0) opened: https://github.com/ruby/ruby/pull/17513
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- Backport PR for ruby_4_0 (4.0) opened: https://github.com/ruby/ruby/pull/17512
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- Backport PR for ruby_4_0 (4.0) opened: https://github.com/ruby/ruby/pull/17511
- 08:34 PM Revision 1cd2c5db (git): ZJIT: Replace guards we know can't pass with an unconditional side-exit
- The resulting type of a `GuardType` we prove cannot pass is `Empty`. Any HIR instructions using the type information from the `GuardType` will also see `Empty` and propagate that type through the compiler. Any generated code would not be...
- 08:34 PM Revision 02365e17 (git): ZJIT: Assert we never try to get the byte size of an `Empty` value
- An `Empty` value has no representable size. The caller trying to get the size is operating on an unreachable instruction that should have already been removed.
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- Backport PR for 4.0 opened: https://github.com/ruby/ruby/pull/17510
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- ruby_4_0 commit:37ab334cd72e027d03e7d9e71eea766ac4d1f174 merged revision(s) commit:c88430e1878f.
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04:37 PM Feature #22131: Avoid array allocation in `Array#include?` on literal arrays
- nobu (Nobuyoshi Nakada) wrote in #note-1:
> Also `putnil` could be optimized.
PR is adjusted and green. Thanks for the suggestion -
- nobu (Nobuyoshi Nakada) wrote in #note-1:
> Also `putnil` could be optimized.
Yes, I thought about it, but decide to start small, I'm going to add it
**UPD:** Added in [2c368383572](https://github.com/ruby/ruby/pull/17496/changes/2c368... -
- Also `putnil` could be optimized.
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- I've noticed that `Array#include?` on a literal array of frozen-shareable elements (Integers, Symbols, true/false/nil, frozen String literals) compiles the receiver to `duparray`, which allocates a fresh `Array` copy on every call — even...
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06:36 PM Feature #22130: Add a new YARV instruction for a `String.new` fast path
- headius (Charles Nutter) wrote in #note-4:
> Is your benchmark published somewhere?
Ya, we're working with them [here](https://github.com/Shopify/lz4-flex-rb/pull/71) -
06:18 PM Feature #22130: Add a new YARV instruction for a `String.new` fast path
- Is your benchmark published somewhere?
-
- BTW, this proposal also fixes a possible regression (though I don't think anyone cares about this case).
Given this code:
```ruby
class String
def initialize foo:
p "hi"
super()
end
end
String.new(foo: 123)
``... -
- ko1 (Koichi Sasada) wrote in #note-1:
> Does it affect app performance?
I don't think it slows down any applications since all cases of `String.new` are faster. But I also think it's rare for any application to call `String.new` so I... -
04:43 AM Feature #22130: Add a new YARV instruction for a `String.new` fast path
- Does it affect app performance?
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- 04:57 PM Revision 68033547 (git): ZJIT: Move objtostring specialization to HIR build (#17499)
- Emitting a Send in `type_specialize` makes the compiler require more
phases to go and optimize that Send. Instead, in HIR build, emit either
a) a guard or b) a run-time type check that might get specialized away.
Also delete `ObjToString`. -
- https://github.com/ruby/error_highlight/commit/6096a05b2f
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04:45 PM Revision 29a3b2e9 (git): [ruby/error_highlight] Bump version to 0.7.2
- https://github.com/ruby/error_highlight/commit/d945ffd2aa
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- [Bug #21864]
https://github.com/ruby/error_highlight/commit/6383387b2d
Co-Authored-By: Benoit Daloze <eregontp@gmail.com> - 04:43 PM Revision 25077834 (git): [ruby/error_highlight] Return nil instead of raising NotImplementedError for def/lambda/block args
- ErrorHighlight.spot defaults point_type to :args for ArgumentError. When an
ArgumentError originates from argument binding (e.g. a missing required
keyword), its first backtrace location maps to a def/lambda/block node. The
spotter had n... -
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- 12:06 PM Revision 5b09cd80 (git): ZJIT: Remove inline_trivial pass (#17472)
- Collapse trivial inlining into emitting the SendDirect. No need for a
separate pass.
We are moving toward a strategy where we strength reduce all the
way in one go. -
09:46 AM Revision ac56efb3 (git): Add an example sampler that uses the GC::Profiler records
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- even when auto-compact is enabled.
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-
-
- similar to how we shim bits.h already
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- Assisted-By: devx/46f21e8b-0835-4833-801f-ce5e336dbf61
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- Assisted-By: devx/46f21e8b-0835-4833-801f-ce5e336dbf61
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- GC_PAUSE_TIME == GC_STOP_TIME + GC_STW_TIME
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- 07:09 AM Revision aefb6f57 (git): Update default gems list at feb0b2849fcccdd0b4a175fe6ac675 [ci skip]
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- https://github.com/ruby/error_highlight/commit/d945ffd2aa
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- It's not used outside of gc.c.
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03:20 AM Bug #22115: [BUG] Segmentation fault at 0x000000000000002c
- Hey.
Do you know if this has been fixed ? I reproduced locally and got a core dump.
I'm running 4.0.3 so not totally recent.
This is the backtrace.
```
(lldb) target create "/home/robert/.rbenv/versions/4.0.3/bin/ruby" --cor... -
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- Co-authored-by: Jeremy Evans <code@jeremyevans.net>
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- Co-authored-by: Jeremy Evans <code@jeremyevans.net>
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- Co-authored-by: Jeremy Evans <code@jeremyevans.net>
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- Co-authored-by: Jeremy Evans <code@jeremyevans.net>
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12:37 AM Revision 3527f391 (git): [ruby/rubygems] Track the shipped RubyGems SecureRandom in the file invariant
- https://github.com/ruby/rubygems/commit/08ebcf2e97
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com> -
- Bundler now reuses RubyGems' Gem::SecureRandom directly instead of keeping
its own vendored copy. The shim prefers an already-loaded Gem::SecureRandom,
then the copy shipped in the gem under lib/rubygems/vendor, and only falls
back to th... -
- Add lib/rubygems/vendor/securerandom to the gem's file list so the Bundler
gem carries its own copy of Gem::SecureRandom. This keeps Bundler
self-contained on RubyGems versions that predate the vendored copy, the
same way the vendored UR... -
- When the same Gem::SecureRandom copy is shipped in two gems (RubyGems and
Bundler) and required from different paths, RubyGems' unguarded
require_relative reloads it and emits "already initialized constant"
warnings. Add an idempotent gu... -
- The test ran a real `bundle install` under a 32M JVM heap and expected
Bundler to catch the OOM. At that heap size the JVM sometimes dies during
boot and the JRuby launcher prints its own message before Bundler's rescue
runs, so the spec...
06/25/2026
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- I would like to introduce a new YARV instruction, `opt_string_new`. It's similar to `opt_new`, but it is specialized for strings.
Today, we [define the `new` method on `String`](https://github.com/ruby/ruby/blob/5d1a0239de4934cb38b0f... -
06:49 PM Feature #22128: C API: Expose RB_OBJ_SET_FROZEN_SHAREABLE
- I came to a similar conclusion when trying the send `Time` across Ractor ports:
``` c
/* before: walk each moved object's refs under the VM lock, on every move */
for (size_t i = 0; i < obj->ref_count; i++)
if (!rb_ractor_sha... -
- Backport PR for 4.0: https://github.com/ruby/ruby/pull/17480
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- Merged, thank you!
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- 05:47 PM Revision 5d1a0239 (git): ZJIT: Ensure we specialize the results of the last inlining operation (#17479)
- When we introduced the inliner we also added repeated passes of the optimization pipeline. The idea being that we want to optimize the results of inlining and, because we only inline one level deep, allow us to perform inlining on the re...
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- `RMATCH_OFFSETS_EXTERNAL` and `MATCH_BUSY` were both assigned to
`FL_USER2`, which could have created weird bugs.
Also add flag documentation for both RMatch and RRegexp. -
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-
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- https://github.com/ruby/psych/commit/7c1bd707a9
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- https://github.com/ruby/openssl/commit/44bb2aa070
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- https://github.com/ruby/json/commit/168095ccb8
- 07:58 AM Revision 91edd1b4 (git): [DOC] Update bundled gems list at ac135260de1d1302e989b31e9d83cf
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- Ref: https://github.com/ruby/ruby/pull/17395
https://github.com/ruby/json/commit/fa69e94b66 - 06:35 AM Revision f400c872 (git): [ruby/json] Fix wrong call-seq for `JSON::ResumableParser#eos?`
- https://github.com/ruby/json/commit/e1ee4b0e22
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- 05:57 AM Revision 12ef8a66 (git): [ruby/error_highlight] Return nil instead of raising NotImplementedError for def/lambda/block args
- ErrorHighlight.spot defaults point_type to :args for ArgumentError. When an
ArgumentError originates from argument binding (e.g. a missing required
keyword), its first backtrace location maps to a def/lambda/block node. The
spotter had n... -
- When the only locked variant is already the ruby one, the install error
should not point at a ruby fallback that doesn't exist. Guards the early
return in incompatibility_message against regressions.
https://github.com/ruby/rubygems/com... -
- Keeps the locked platform argument keyworded along the whole
resolve_best_platform path instead of switching to a positional at the
last hop.
https://github.com/ruby/rubygems/commit/1d5f35ad0e
Co-Authored-By: Claude Opus 4.8 (1M contex... -
- When a platform-specific variant is the only thing locked and it is
incompatible with the current Ruby, frozen mode fails at install time
with no hint about the fix. Point users at re-resolving outside frozen
mode, which adds the ruby va... -
- The locked platform set is a property of the candidates being materialized
together, so compute it in Materialization and thread it through to
candidate_platforms rather than writing it back onto each shared
LazySpecification from the co... -
- It's causing ruby CI to flake, because it's a badly designed test,
a lot of thing can cause acouple extra allocation there and there
so even if you invoke the exact same code twice, you might still
allocate a bit more or a bit less. -
- The Bundler gem now ships lib/rubygems/vendor/uri, so include it in
tracked_files_glob to keep the "ships the correct set of files" spec in
sync with the gemspec.
https://github.com/ruby/rubygems/commit/d159cabc72
Co-Authored-By: Claud... -
- Drop Bundler's duplicate vendored URI copy and load Gem::URI from
RubyGems' copy instead, which the gem now ships under lib/rubygems.
The shim skips loading when Gem::URI is already defined and falls back
to the stdlib only when no vendo... -
- Add lib/rubygems/vendor/uri to the gem's files so Bundler carries the
Gem::URI copy itself. This keeps Bundler self-contained on RubyGems
versions older than 3.5, which do not vendor URI, independently of any
release cutoff.
https://git... -
- When the same Gem::URI copy is shipped in two gems (RubyGems and Bundler)
and required from different paths, RubyGems' unguarded require_relative
reloads it and emits "already initialized constant" warnings. Add an
idempotent guard at th... - 02:28 AM Revision 1619cf7c (git): io_buffer: add safe callback wrappers for String views. (#17473)
06/24/2026
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- The ascii-compatible path builds a binary buffer but returned numeric
character references via chr(enc), so a non-ASCII replacement appended
to a buffer that already held non-ASCII bytes raised
Encoding::CompatibilityError. Decode into t... -
- The snake_case aliases (escape_html, h, unescape_html) were defined
before `require 'cgi/escape.so'`, so they captured references to the
pure Ruby methods. After the C extension loads and prepends EscapeExt,
only the camelCase names (esc... -
- Bundler's required_rubygems_version (>= 3.4.1) always ships Gem::TSort,
vendored into RubyGems since 3.4.0, so the duplicate Bundler::TSort copy
is unnecessary. Delegate to rubygems/vendored_tsort and switch SpecSet to
include Gem::TSort... -
- Since `src` is always a `fstring` we don't need to compare
length nor content, we can just compare the pointers. -
- > since RB_OBJ_SET_FROZEN_SHAREABLE is shallow and doesn't verify that referenced objects are shareable, this seems very hard to use safely.
I understand your reservation, I kinda have the same, but I think this being a C-level API i... -
08:02 PM Feature #22128: C API: Expose RB_OBJ_SET_FROZEN_SHAREABLE
- I agree we need to find some way to make up that performance, but since `RB_OBJ_SET_FROZEN_SHAREABLE` is shallow and doesn't verify that referenced objects are shareable, this seems very hard to use safely. Even in the example Trilogy PR...
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- ### Context
I'm trying to experiment with adapting Active Record for a Ractor architecture.
Since database connections can't possibly be Ractor shareable, the idea is to warp each connection inside its own ractor, and then send SQL... -
09:17 PM Revision bb75c289 (git): ZJIT: Inline String#ascii_only? and #valid_encoding?
- Read the cached coderange directly (flags & MASK) instead of calling the
builtin: ascii_only? is == 7BIT, valid_encoding? is != BROKEN, side-exit
on UNKNOWN. Drops the call, ~20% faster on ZJIT. -
- Get rid of the CFUNC overhead in String#ascii_only? and #valid_encoding?. Define them as leaf Primitive.cexpr! builtins in a new string.rb, following the pattern of numeric.rb.
This makes them 1.2x-1.4x faster across the interpreter, YJ... -
- 08:22 PM Revision 4949309e (git): ZJIT: Remove optimize_getivar
- 08:22 PM Revision 312d58f3 (git): ZJIT: Obviate optimize_getivar
- 08:22 PM Revision a0c02a4d (git): ZJIT: Optimize loading instance variables in one go
- Skip intermediate GetIvar and optimize straight through, either from
getinstancevariable opcode or from methods with METHOD_TYPE_IVAR. -
- With code like
```ruby
def x(y:) = y
begin
x
rescue => e
p e.exception("wat").detailed_message
end
```
a NotImplementedError is raised on ruby 4.0+
```
/Users/rwstauner/.rubies/4.0.2/lib/ruby/4.0.0/error_highlight/... - 07:14 PM Revision b2e8843a (git): ZJIT: Fix prefix comma on InvokeBlock (#17471)
- Also introduce printing helper for writing separated lists in `Display`
impl for `Insn`. - 06:47 PM Revision fd2f18c3 (git): ZJIT: Print string name of constant in rb_zjit_constant_state_changed (#17470)
- It's not so useful to see `ID(abc)` when debugging with `--zjit-debug`
or in Perfetto traces. Also provide the string representation of the ID,
for example: `ID(abc): String`. -
03:58 PM Revision 491d6151 (git): Bump RDoc bundled gem revision (#17448)
- * Bump RDoc bundled gem revision
* Skip RBS RDoc plugin tests for RDoc bump -
02:47 PM Feature #22118: Introduce Basic Bit Operations into String
- Introducing efficient bit operations is a great idea, but looking at the proposed methods, having to pass `lsb_first:` repeatedly across multiple bit-related methods suggests that the bit-endianness is a cross-cutting concern.
I belie... -
- Replace attributes and decode escaped punctuations.
```
Net/HTTP.html: `rdoc-ref:OpenSSL::SSL::SSLContext#max_version-3D` can't be resolved for ``
Net/HTTP.html: `rdoc-ref:OpenSSL::SSL::SSLContext#min_version-3D` can't be resolved for `... -
01:51 PM Revision b914f830 (git): [ruby/openssl] x509store: add X509::Store{,Context}#flags and #clear_flags
- OpenSSL::X509::Store{,Context}#flags= does not clear existing flags.
Instead, it ORs new flags to the current set. This is contrary to
normal convention and likely unintentional, but changing the behavior
would not be acceptable for comp... -
- Do not raise FrozenError in SSLServer.new when
SSLContext#session_id_context cannot be updated. session_id_context is
only necessary for session resumption, so its absence is not critical.
Fixes https://github.com/ruby/openssl/pull/742
... -
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- Applied in changeset commit:git|66ec908b84a99e512647a9dd61ac3451869e2a12.
----------
[Bug #22127] Check the dynamic regexp compilation results -
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- OSSL_3_const was useful when supporting OpenSSL 1.0.2-3.x at the same
time. Since support for OpenSSL < 1.1.1 has been dropped, most uses can
simply be replaced with plain const.
https://github.com/ruby/openssl/commit/ce050d7740 -
- https://github.com/ruby/net-http/commit/69f6f6dedd
- 09:45 AM Revision 649e639a (git): [ruby/openssl] Add DHKEM test cases
- https://github.com/ruby/openssl/commit/dfc45d31d0
- 07:57 AM Revision 12ce975e (git): [DOC] Update bundled gems list at 815710fc27bd3c12d256e14883b37d
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06:17 AM Revision 815710fc (git): [DOC] Update documentation of refinement super
- Method lookup for refinement super starts with the next active
refinement at the super call site, excluding the current refinment,
if such a refinement exists. This has been the behavior since Ruby
2.7, and it is now confirmed to be the ... -
- ruby/rubygems flattened the Bundler tree from bundler/ up to the
repository root, so repoint the rubygems mappings accordingly. Guard the
gemspec fixup with File.exist? too, since the synthetic parent tree built
for the flattening commit... -
- After flattening, lib/ holds both RubyGems and Bundler, so any dev binstub
that puts the worktree lib/ on $LOAD_PATH now overlays the already-booted
system RubyGems with the worktree one. bin/bundle hit this through the
Bundler gemspec a... -
- After flattening, Bundler shares lib/ with RubyGems, so spec subprocesses
load the in-development Bundler from $LOAD_PATH instead of an installed
gem, the same way ruby-core already does. Four examples assumed a
separately installed Bund... -
- Catch the leftover bundler/lib and bundler/exe references after the move:
the dev binstubs (bin/mdl, bin/rubocop, bin/test-unit), .gitattributes,
.codespellrc, the release tool version file, the rubygems_ext/ci_detector
cross-reference N... -
- Move bundler/{CHANGELOG,LICENSE,README}.md to the top level as
CHANGELOG-bundler.md, LICENSE-bundler.md and README-bundler.md so they
no longer collide with the RubyGems documents while keeping the
CHANGELOG*/LICENSE*/README* prefixes th... -
- setup_command builds and installs the default Bundler gem from the
source tree. With Bundler flattened into the top-level lib/ and
bundler.gemspec, the separate "bundler/lib" library and the chdir into
bundler/ are gone: the single lib/ ... -
- Flatten bundler/lib, bundler/exe and bundler/bundler.gemspec into the
repository's top-level lib/, exe/ and bundler.gemspec to converge on the
flat layout ruby/ruby already uses. Bundler is fully require_relative
based, so the source mov... -
- Applied in changeset commit:git|1f473ed633a364f8c89b69a76adfb22a4bf21f96.
----------
[Bug #22126] Fix partial DCE with loop back-edges
The old `remove_unreachable_chunk` walked the dead code once and tried
to do two things at the same ... -
- viralpraxis (Iaroslav Kurbatov) wrote:
> every version since 3.4.0-preview2 is affected
Ruby 3.3 with prism hangs up instead of stack underflow. -
- The old `remove_unreachable_chunk` walked the dead code once and tried
to do two things at the same time -- count label references inside that
chunk and figure out what exactly to delete.
That breaks for loops -- the loop label comes be... -
- OpenSSL >= 3.5 can ship ML-KEM and ML-DSA while still keeping them out
of the default negotiation lists, for example under RHEL's system-wide
crypto policies. The tests force a PQC-only server but connect with the
default gem fetcher, so... -
02:37 AM Revision 0e4dbb2d (git): [DOC] Fix the return value of Ractor#monitor
- The RDoc `call-seq` for `Ractor#monitor` says it returns `self`, but the
method actually returns `true`/`false`.
It is implemented by `ractor_monitor()` in `ractor_sync.c`, which returns
only `Qtrue` or `Qfalse` — there is no code path ... -
- Thank you for your feedback, and I'm glad to hear your concerns are mostly addressed.
Eregon (Benoit Daloze) wrote in #note-16:
> I'm not sure it's really needed though and might be surprising, is it needed?
`with_refinements` is seman...
06/23/2026
-
10:45 PM Feature #22121: Introduce Parallel Sweep feature
- Sorry, I forget to address the last concern.
> 3% is valuable for apps? (if no disadvantage, I think so)
I think so, but we would like to improve upon it over time.
-
- ko1 (Koichi Sasada) wrote in #note-1:
> The definition of "Ruby GC thread" and "the sweep thread"
The Ruby GC thread is the mutator thread that started GC and is currently doing GC work. The sweep thread is the thread whose only work... -
- > I would like to have an additional "sweep thread" that sweeps alongside the Ruby GC thread (in parallel) and at the same time as Ruby code is running (concurrent). When the sweep thread is working alongside the Ruby GC thread, both thr...
-
- Before this commit we were lumping all getivar fallback reasons in to
one counter. This made it very hard to find the most popular reasons for
why we're doing slowpath IV reads. This commit just adds more counters
and splits up the fall... - 10:07 PM Revision e91fb8fe (git): [ruby/rubygems] rubygems: Fix Gem::Request for PQC support, adding integration connection tests
- Added PQC server/client connection integration tests.
As test_pqc_ssl_client_cert_auth_connection failed with the following error
due to hardcoded `OpenSSL::PKey::RSA.new` in
`Gem::Request.configure_connection_for_https`, fixed it to sup... - 09:44 PM Revision d58f0291 (git): Use page-sized stack overflow detection window. (#17436)
- * Remove stack overflow space ratio
* Cache page size. - 09:30 PM Revision 00f824cd (git): ZJIT: Recompile getblockparamproxy on side exits (GH-17326)
- Add recompile support for getblockparamproxy. This reduces side exits
from monomorphic block handler paths.
Collect block handler profiles from unprofiled and monomorphic
getblockparamproxy guard exits, then invalidate the compiled vers... -
08:33 PM Revision 11d005d6 (git): [ruby/prism] Pop block stack before finishing command call arguments within parenthesized call
- https://github.com/ruby/prism/commit/26cfb915e8
-
- Set RUBY_TYPED_THREAD_SAFE_FREE on TypedData types whose dfree function
is trivially safe, and only frees its own memory
Types not yet marked as THREAD_SAFE_FREE:
- id2ref_tbl_type: sets the process-global id2ref_tbl to NULL.
- mutex_da... -
08:17 PM Bug #22125: IO::Buffer triggers use-after-free when it's freed/resized during enumeration
- We're already discussing how to fix this case in https://github.com/ruby/ruby/pull/17398 .
-
- The block passed to `IO::Buffer#each` can free or resize the receiver (or its parent buffer when the reciver is a slice), which invalidates the memory region being iterated. The next iteration causes use-after-free.
repro:
```
./m... -
- * [Feature #21998] Add {Method,UnboundMethod,Proc}#source_range (eregon)
* Could matz reply there?
-
- From https://github.com/ruby/dev-meeting-log/blob/master/2026/DevMeeting-2026-06-11.md#feature-21998-add-methodunboundmethodprocsource_range-eregon
> matz: I want to confirm his intention. Let me respond.
@matz What can I clarify?
... -
- Previously, `:dynamic_setivar_count`, `:dynamic_getivar_count`, and
`:dynamic_definedivar_count` had a percentage to the right of them in
the printout with the denominator being `:send_count`.
These are not sends, so move them out of th... -
- ```
./ruby --parser=parse.y -e '/#{"\xcd"}/'
```
results in a segfault -
- https://github.com/ruby/prism/commit/7c415b1936
- 05:43 PM Revision 406a62e5 (git): ZJIT: Re-apply "ZJIT: Clean up branching in polymorphic opt_send_without_block HIR construction" (#17437)
- Re-apply https://github.com/ruby/ruby/pull/16634
- 05:08 PM Revision f2425a17 (git): ZJIT: Optimize definedivar in HIR build
- No optimization emits DefinedIvar, so just use what we know in HIR build
instead. - 05:08 PM Revision de640b93 (git): ZJIT: Optimize opt_getconstant_path in HIR build
- Don't do this in `type_specialize`; it doesn't depend on any other IR
optimization and can be done with only bytecode information. -
- ``` ruby
ruby --parser prism -e 'if []; else; a => [*, 42, *]; end'
-- raw disasm--------
trace: 1
0000 putnil ( 1)
0001 leave ... -
- https://github.com/ruby/prism/commit/56172038ce
-
03:27 PM Revision 5874b12d (git): Bump prism version
-
- > should have an "else rb_vm_rewind_cfp", but I don't know enough about how this all works.
Out of curiosity I tried it, it does solve the problem on my machine, it does fail in some case on CI though: https://github.com/ruby/ruby/pul... -
- Trying that repro on older Rubies, it does seem to reproduce all the way back to `2.7.8`, `2.6.10` seem fine though.
-
- So the crash did come back later when `charlock_holmes` was added as a dependency, this time it crash while loading some encoding `.so`.
```
ruby-4.0.5/lib/ruby/4.0.0/aarch64-linux/enc/euc_jp.so: [BUG] vm_call_cfunc: cfp consistency err... -
01:42 PM Bug #21967: `vm_call_cfunc: cfp consistency error` while requiring `nkf.so`
- We've got a similar looking crash while loading encodings at boot via the charlock_holmes gem. I think it happens when we get a TERM in the middle of loading the encoding, causing us to longjmp over the line that would normally pop the f...
-
- String#casecmp? folds both operands with a Unicode case fold, allocating two new strings, and compares the results. For ASCII-only strings, Unicode case folding is equivalent to ASCII case-insensitive comparison, so the operands can be c...
-
- This bug may be related to #22104.
-
- Applied in changeset commit:git|d8444812f42162567502877ff3665105a960eb60.
----------
[Bug #22124] Add block to the proper node -
- Thanks, it looks a very old standing bug.
-
-
- 10:46 AM Revision 3688723a (git): Update default gems list at 1da3f06e26b1f65f5f30eb2b0e1999 [ci skip]
-
- https://github.com/ruby/json/commit/13162921b8
- 10:27 AM Revision 50688881 (git): [ruby/rubygems] RubyGems: Remove unused ctx.tmp_dh_callback in start_ssl_server
- https://github.com/ruby/rubygems/commit/c249eae477
-
- cargo builds in YJIT/ZJIT/Rust workflows intermittently fail when a
crates.io download is truncated (curl [16] HTTP/2 framing, [18] partial
transfer). Set CARGO_NET_RETRY and disable HTTP/2 multiplexing at the
workflow level so every job... -
- The ascii-compatible path builds a binary buffer but returned numeric
character references via chr(enc), so a non-ASCII replacement appended
to a buffer that already held non-ASCII bytes raised
Encoding::CompatibilityError. Decode into t... -
- The snake_case aliases (escape_html, h, unescape_html) were defined
before `require 'cgi/escape.so'`, so they captured references to the
pure Ruby methods. After the C extension loads and prepends EscapeExt,
only the camelCase names (esc... -
08:11 AM Feature #22111: Non-symbolic hash keys with `expr : value` syntax
- BTW, what I was alluding to in my side question above was how adding _"hash colon"_ syntax (eg. `"key" : value`) to `Hash` could unlock pattern matching on string-keyed values.
Previously `in {key: ...}` only matched symbol keys, so par... -
-
- This isn't essential for correctness, however it's a natural time to
investigate whether the heap is in a correct state. - 06:17 AM Revision c7190d3b (git): Remove unused native thread stack size. (#17435)
-
- This one was tricky. I couldn't get a reliable reproduction even after knowing what the issue was, but I think this will fix it: [PR](https://github.com/ruby/ruby/pull/17438)
-
- https://github.com/ruby/json/commit/1443265cd1
06/22/2026
-
- Applied in changeset commit:git|d44862fe2a5d68de648eccae7743899b6a5c870a.
----------
[Feature #22067] Add RUBY_TYPED_THREAD_SAFE_FREE flag
Lets a TypedData type declare its dfree as thread-safe, so the GC may
run it on any thread, in p... -
- Lets a TypedData type declare its dfree as thread-safe, so the GC may
run it on any thread, in parallel, and concurrently with Ruby code.
Implies RUBY_TYPED_FREE_IMMEDIATELY. -
- We're not using these anymore now that non-typed T_DATA are gone.
- 08:54 PM Revision e9e7f9b6 (git): ZJIT: Add quick checks to bail out of inlining early (#17432)
- While these checks were already being performed, they did so after scanning the caller's blocks. We want to avoid that work when we know inlining cannot be performed.
-
- https://github.com/ruby/prism/commit/43ffaad503
-
- Doh, fixed.
-
- > I managed to get a reproduction.
Your repo is private :) -
- I managed to get a [reproduction](https://github.com/luke-gruber/ruby_bug_22104_repro). It crashes fairly often, but you should still use a script that calls it over and over until non-0 exit status. When it does crash, the stack trace i...
- 07:54 PM Revision 5b162d7b (git): ZJIT: Remove redundant EP reloads in gen_getblockparam (#17430)
- gen_getblockparam loads the EP once at the top,
then reloads it twice more before writing the Proc and before reading it back.
Both reloads are unnecessary:
- The EP address is invariant here. The function only writes into env slots rea... -
- https://github.com/ruby/prism/commit/6b4f0ade80
-
- Thank you for your replies, they address most of my concerns and show this was well though out.
Yes, I think a performance warning is fine and important to add, nothing would be a silent performance trap.
shugo (Shugo Maeda) wrote in #... -
- A couple more deviations from the parse.y grammar with the
command_call and arg productions.
* pm_block_call_p — allow parens on chain links (meth 1 do end.fun(x))
* pm_command_call_value_p — recognize const-path brace commands (Foo::Ba... -
- "~> 0.14" is equivalent to ">= 0.14, < 1". Since the openssl gem is an
empty stub on JRuby, there is no good reason to specify version bounds
on jruby-openssl.
[ky: commit message]
https://github.com/ruby/openssl/commit/3ffbe73aaa
Co-... - 05:23 PM Revision d54ab7bd (git): [ruby/openssl] x509crl: add OpenSSL::X509::CRL#by_serial for faster lookup of a single cert
- https://github.com/ruby/openssl/commit/83f4a0db32
- 05:18 PM Revision c729c842 (git): [ruby/openssl] Add EVP_PKEY KEM operations
- https://github.com/ruby/openssl/commit/f2ec03dda1
-
- * While perusing code in hash.c I found it suspicious that ar_find_entry_hint()
didn't reread bound in the loop and yet called arbitrary code through #eql?.
* ar_find_entry_hint() before this commit would not check if bound or the stor... - 04:58 PM Revision 89b33636 (git): [Prism] RB_GC_GUARDs needed in pm_parse_string
- (Backport for 4.0)
-
- Split rb_zjit_init into rb_zjit_init_builtin_cmes (called before
ruby_init_prelude) and rb_zjit_init (called after). The prelude may
load bundler via BUNDLER_SETUP which can call Kernel.prepend, moving
core methods to an origin iclass. R... -
-
04:57 PM Revision 6d56bceb (git): Add regression test for module prepend crash
-
- Split rb_yjit_init into rb_yjit_init_builtin_cmes (called before
ruby_init_prelude) and rb_yjit_init (called after). The prelude may
load bundler via BUNDLER_SETUP which can call Kernel.prepend, moving
core methods to an origin iclass. R... - 04:57 PM Revision b23f46c1 (git): [Box] make the tmp array safe
- * Using rb_ary_hidden_new() to hide this array
from ObjectSpace.each_object
* Call RB_GC_GUARD to not collect this value in GC - 04:57 PM Revision a7003017 (git): [Box] Invalidate callable me on per-box origin IClasses
- 04:57 PM Revision 6765a5f6 (git): [Box] Invalidate the method cache of the owner too
- The owner could be different from the housing class when the housing
module is prepended. - 04:57 PM Revision 4d75ffad (git): [Box] dump the effective box on the control frame info
-
- `rb_load_entrypoint` is used only by `rb_box_load`; it checks that the
argument has two-elements (implicitly assuming it is an array),
extracts its contents, and then simply discards the argument. - 04:57 PM Revision dd3f462d (git): Fix perf. of RCLASS_EXT_WRITABLE
- FL_TEST -> FL_TEST_RAW
FL_SET -> FL_SET_RAW
I was seeing bad performance on the ruby-bench getivar-module benchmark
when using yjit. This was with other changes in a branch, but changes
totally unrelated to accessing ivars on a class o... -
- test/ruby/test_box.rb: extend timeout for slow Windows CI
The default 10-second assert_separately timeout is too tight for
test_calling_root_box_methods_does_not_change_user_boxes_newly_created
on Windows CI, where the subprocess comple... -
- Using obj_id in classext_cow_classes is slow and also is a problem when
freeing classes because the lookup requires the EC, which is not available
if it is running on a GC thread. This will cause it to crash on MMTk.
We don't need to us... - 04:57 PM Revision 99aac00f (git): [Bug #21881] Separate the master and root box
- This change separates the master box from the root box, as the single
master copy of boxes.
Before this change, the root box is the source of copies, and also
it runs builtin classes' code. Builtin code makes changes by
requiring files, ... - 04:57 PM Revision 271d3f2e (git): Fix bug: the Slowpath doesn't work correctly because of double increment
- builtin_lookup() find the pre-loaded and compiled (to ISeq) builtin libraries.
The libraries (.rb files) are loaded by miniruby, and those ISeq are written
in build/builtin_library.rbbin in the order that miniruby loads.
The fastpath of... -
04:57 PM Revision 3adbf3b0 (git): Ruby::Box fix stale cached values for exception-related global variables ($! and $@)
- Ruby::Box fix stale cached values for exception-related global variables ($! and $@)
The exception-related virtual variables $! (current exception) and
$@ (its backtrace) are stored on the execution context (ec->errinfo
and the rescue/e... - 04:57 PM Revision a2cdbf2b (git): Box: pend the CI failure on Windows
- The failure is caused by the problems of call caches, subclasses management.
The fix requires the tons of changes on master, so we will skip those changes
in 4.0 to make users try Box with minimum changes. - 04:57 PM Revision 655f89db (git): [Box] Unroll the changes using features for 4.1
-
- Co-authored-by: Alan Wu <XrXr@users.noreply.github.com>
-
- https://github.com/ruby/prism/commit/358d778439
-
- https://github.com/ruby/prism/commit/8eb393bf37
-
- https://github.com/ruby/prism/commit/654b4edc21
-
- https://github.com/ruby/prism/commit/55548c2fd5
-
- https://github.com/ruby/prism/commit/b3819da252
-
- https://github.com/ruby/prism/commit/d18d9d829b
-
- ```
$ ruby --parser=parse.y -cwe 'x = return a b do end'
Syntax OK
$ ruby --parser=prism -cwe 'x = return a b do end'
ruby: -e:1: syntax error found (SyntaxError)
> 1 | x = return a b do end
| ^~~~~~~~~~~~~~~~~ unexpected v... -
- A slow ghcr image pull (~2.5 min) can leave too little of the 5 minute
budget for configure and build to finish, so the step is killed before
the build completes. Bump each per-compiler step to 8 minutes to absorb
the pull variance.
Co-... - 08:46 AM Revision 08a731fe (git): Bump the github-actions group across 2 directories with 4 updates
- Bumps the github-actions group with 4 updates in the / directory: [actions/checkout](https://github.com/actions/checkout), [ruby/setup-ruby](https://github.com/ruby/setup-ruby), [zizmorcore/zizmor-action](https://github.com/zizmorcore/zi...
- 08:45 AM Revision 2a574fd9 (git): [DOC] Update bundled gems list at 2f65ce7ccda7d75d4075ce319cbd1d
-
- With a warm gems/src cache the wanted tag or revision is already in the local clone, but the fetch ran unconditionally and added a github.com round-trip per gem that a transient outage could abort. Resolve the ref locally first and fetch...
-
- `make up` clones only the revision-pinned gems (debug, rdoc) into gems/src, so jobs that merely run `make up` saved a partial tree and, because the cache key is immutable, won the shared key and left test-bundled-gems to re-clone the res...
-
07:51 AM Revision 2f65ce7c (git): [ruby/json] Preserve UTF-8 encoding when reallocating a frozen ResumableParser buffer
- `JSON::ResumableParser#<<` raises `Encoding::CompatibilityError` when the
first chunk is a frozen multibyte UTF-8 string and more data is fed after a
partial parse.
## Reproduction
```ruby
require "json"
parser = JSON::ResumableParser... -
- This commit implements a fast path that inlines mmtk_post_alloc for Immix.
The benchmark results show a decent speed up in allocation performance.
GC.disable
i = 0
while i < 10_000_000
Object.new
i += 1
end
... -
- SSL_connect failing with Errno::ECONNRESET ("Connection reset by peer")
was not caught by with_retry, so a transient reset from rubygems.org
aborted the build on the first failure instead of retrying. Catch
SystemCallError so the Errno::... -
- syntax_suggest's internal search timeout defaults to 1 second, which is
too short on the emulated ppc64le/s390x runners. The integration spec
issues/95 prints "Search timed out" instead of the expected diagnostic
and flakes. RUBY_TEST_TI... -
- CI jobs frequently abort when cloning bundled gems from github.com fails
with "Could not resolve host", a transient DNS error unrelated to the
change under test. Cache gems/src keyed on gems/bundled_gems so the common
case touches no net... -
- RDoc parsed ENV['http_proxy'] inside the link label as a cross-reference,
emitting a stray <a href="'http_proxy'">ENV</a> and breaking the
surrounding {label}[url] markup. Drop the subscript from the label.
https://github.com/ruby/net-h... -
- The {label}[url] markup pointed at OpenSSL::SSL::SSL::Context#..., which
RDoc emitted verbatim as a relative href and never resolved. Point them
at the full SSLContext documentation URLs instead.
https://github.com/ruby/net-http/issues/... -
- The ZJIT build occasionally fails while cargo fetches a crate from
crates.io with `curl [16] Error in the HTTP2 framing layer`, a transient
transport error unrelated to the change under test. Disable HTTP/2
multiplexing and raise the ret... -
03:24 AM Bug #18995: IO#set_encoding sometimes set an IO's internal encoding to the default external encoding
- Contrast the reported behavior with an apparently equivalent call using a single, colon separated argument:
```ruby
def show(io)
printf(
"external encoding: %-25p internal encoding: %-25p\n",
io.external_encoding,
io... -
- This bug continues to exist in version 4.0.5.
-
- The tmpdir cleanup now calls FileUtils.remove_entry with force enabled
on Ruby 4.1 and later. Branch the mock expectation by version so older
Ruby still asserts the single-argument call.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropi... - 01:18 AM Revision 38a22a07 (git): Update default gems list at 05b94177c435321f8168d8a930d5c2 [ci skip]
-
- https://github.com/ruby/pp/commit/29552e894c
06/21/2026
-
11:51 PM Misc #22107: DevMeeting-2026-07-09
- * [Feature #18915] New error class: NotImplementedYetError or scope change for NotImplementedError (koic)
* A new exception class `AbstractMethodError` inheriting from `ScriptError` has been designed.
* Existing code may define an ... - 09:43 PM Revision 2b751ac7 (git): [ruby/tmpdir] Make `mktmpdir` cleanup tolerate missing paths.
- https://github.com/ruby/tmpdir/commit/57c6cad284
-
- Commit be5877d1539e2802743904662f532b2b8237ce1e added new source files.
-
- https://github.com/ruby/json/commit/7c8af4b9ef
- 11:59 AM Revision be5877d1 (git): [ruby/openssl] Add Hybrid Public Key Encryption (HPKE) API Support
- https://github.com/ruby/openssl/commit/6b80681cde
-
- Since modular GC was done, the GC module is missing a bunch of methods.
-
-
- If the feature name contains neither `./` nor `../`, we don't need
to call `rb_file_expand_path_internal`, just joining the load path
with the feature name is enough. -
- Followup: https://github.com/ruby/json/pull/1031
Now that the bug has been fixed upstream, we can only apply
it on unpatched version.
Also refactor the workaround to expose the exact same API
as `rb_catch_obj`, making it easier to igno... -
- https://github.com/ruby/openssl/commit/9d74f60dea