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Changelog

This file records the notable changes in each CFL release.

Unreleased

  • Added public request-lifetime arena allocation, duplication helpers, allocator callbacks, and optional bounded geometric chunk growth.

1.0.0 - 2026-07-11

The first stable CFL release establishes the variant, container, utility, and optional arena interfaces used by Fluent Bit and its companion telemetry libraries.

Highlights

  • Added optional arena allocation for strings, variants, arrays, and key/value lists, including reset, cache control, ownership validation, benchmarks, and lifecycle documentation.
  • Added case-sensitive and case-insensitive key/value lookup variants.
  • Strengthened container ownership and cycle validation for mutable variant graphs.
  • Improved allocation failure handling and made dynamic-string formatting preserve the original value when growth fails.
  • Improved portability across GNU C99 and GNU C17, ARM64, Windows, macOS, and supported Linux environments.
  • Expanded sanitizer, Valgrind, installed-consumer, and downstream validation for Fluent Bit, cmetrics, ctraces, and cprofiles.
  • Installed the bundled xxHash archive with its headers so installed consumers can use CFL's public hash interface.

Behavior changes

  • cfl_array_remove_by_reference() now returns -1 when the supplied variant is not present in the array.