https://github.com/protocolbuffers/protobuf/pull/13204 refactored the Ruby object cache to use a key of `LL2NUM(key_val)` instead of `LL2NUM(key_val >> 2)`. On 32-bit systems, `LL2NUM(key_val)` returns inconsistent results because a large value has to be stored as a Bignum on the heap. This causes cache lookups to fail.
This commit restores the previous behavior of using `ObjectCache_GetKey`, which discards the lower 2 bits, which are zero. This enables a key to be stored as a Fixnum on both 32 and 64-bit platforms.
As https://patshaughnessy.net/2014/1/9/how-big-is-a-bignum describes, a Fixnum uses:
* 1 bit for the `FIXNUM_FLAG`.
* 1 bit for the sign flag.
Therefore the largest possible Fixnum value on a 64-bit value is 4611686018427387903 (2^62 - 1). On a 32-bit system, the largest value is 1073741823 (2^30 - 1).
For example, a possible VALUE pointer address on a 32-bit system:
0xff5b4af8 => 4284173048
Dropping the lower 2 bits makes up for the loss of range to these flags. In the example above, we see that shifting by 2 turns the value into a 30-bit number, which can be represented as a Fixnum:
(0xff5b4af8 >> 2) => 1071043262
This bug can also manifest on a 64-bit system if the upper bits are 0xff.
Closes#13481Closes#13494
COPYBARA_INTEGRATE_REVIEW=https://github.com/protocolbuffers/protobuf/pull/13494 from stanhu:sh-fix-ruby-protobuf-32bit d63122a6fc
PiperOrigin-RevId: 557211768
This will make PRs from forked repositories significantly less painful, since they'll agree on which version of each action to use. OTOH, we'll have a separate repo that needs to be maintained, and changes to it will need to be coordinated and versioned carefully. This will likely need to be done less often though now that our infrastructure is stable.
PiperOrigin-RevId: 512117705
This migrates from reusable workflows to composite GHA actions. This has the following advantages:
1) We can split them into smaller, easier to reason about chunks
2) We can reuse them more freely between each other and workflows
3) They don't complicate the job names
4) In theory they'll be easier to test in isolation. While composite actions can't be unit-tested, we can easily break them up into nodejs or docker actions that can be.
As a proof of concept, some of our non-Bazel tests are migrated to GHA as well (CMake + Composer)
Closes#11718
COPYBARA_INTEGRATE_REVIEW=https://github.com/protocolbuffers/protobuf/pull/11718 from protocolbuffers:gha-actions 5403307bc00616e94816aa460813939d8f37a1bd
PiperOrigin-RevId: 506375417
This is a proof of concept that we can experiment with before migrating all of our Kokoro tests to GHA. In addition to the migration, this builds out infrastructure for safe handling of both external and internal contributions. Two of the existing GHA workflows have also been migrated to this system to unify how we handle testing.
To test the new workflow introduced here, you can open PRs to the `gha` branch. This feature branch acts as a staging area for GHA. PRs opened up from this repo will automatically have all tests run on each commit. We will also run them all as post-submits, and continuously on a daily schedule. PRs opened from forked repos will need per-commit approval for each test run, which can be given by adding the `safe for tests` label.
Examples (failures are intentional to show that the PR code is being tested):
- Internal PR: https://github.com/protocolbuffers/protobuf/pull/11679
- Fork PR (approved): https://github.com/protocolbuffers/protobuf/pull/11685
- Fork PR (rejected): https://github.com/protocolbuffers/protobuf/pull/11683
- External PR: https://github.com/protocolbuffers/protobuf/pull/11695Closes#11702
COPYBARA_INTEGRATE_REVIEW=https://github.com/protocolbuffers/protobuf/pull/11702 from protocolbuffers:gha f3a2663896
PiperOrigin-RevId: 506169444
Stan Hu
Mike Kruskal
Jason Lunn
Sandy Zhang
Joshua Haberman
Joyce
Mike Kruskal