Chapter 6. Changes in Go Toolset 1.24

Go Toolset has been updated to version 1.24.4 with the release of the RHSA-2025:10677 advisory.

Language:
- Generic type aliases are now fully supported, allowing type aliases to be parameterized for increased flexibility with generics.
Tools:
- The Go module system supports tool directives in go.mod files, enabling direct management of executable dependencies.
- The go build, go install, and go test commands now support the -json flag for structured output.
- The new GOAUTH environment variable provides enhanced authentication for private modules.
Runtime and Performance:
- Runtime improvements reduce CPU overhead by 2–3% on average.
- Notable changes include a new map implementation based on Swiss Tables and more efficient memory allocation.
Standard Library:
- The new os.Root type enables directory-limited filesystem access.
- The testing.B.Loop method improves benchmarking.
- The runtime.AddCleanup function provides a more flexible finalization mechanism.
- The new weak package introduces weak pointers.
Cryptography:
- New packages for ML-KEM post-quantum key exchange (crypto/mlkem), HKDF, PBKDF2, and SHA-3 are now available.
- The Go Cryptographic Module is now under review for FIPS 140-3 certification.
Additional updates:
- The vet tool includes a new analyzer for detecting common mistakes in tests and examples.
- The objdump tool now supports more architectures.
- Cgo introduces annotations for improved performance and correctness.

For more information, see the upstream release notes.

Go Toolset is a rolling Application Stream, and Red Hat supports only the latest version. For more information, see the Red Hat Enterprise Linux Application Streams Life Cycle document.