Issues

• Resolve errors and warnings in generateDataAndRun.sh

  bug
  unicode-org/conformance#564 · Filter by author sven-oly opened on Oct 9, 2026

• Integrate ICU79 from final release

  enhancement
  unicode-org/conformance#563 · Filter by author sven-oly opened on Oct 9, 2026
  

• Decouple the verifier from the template

  bug
  unicode-org/conformance#560 · Filter by author sffc opened on Aug 27, 2026

• Should we remove "hexhas" from the input_data in tests?

  enhancement
  Feature

  unicode-org/conformance#559 · Filter by author sven-oly opened on Aug 27, 2026
  1

  

• [Harness Bug] Output overwrite conflict when running multiple versions of the same executor on the same ICU version

  unicode-org/conformance#553 · Filter by author sffc-bot opened on Jun 25, 2026 · High Priority ⟨P1⟩

• ICU4X collation fails in ICU78 version with several tests

  unicode-org/conformance#552 · Filter by author sven-oly opened on Jun 12, 2026
  2

• TestGen and NodeJS versions

  techdebt
  Task

  unicode-org/conformance#550 · Filter by author sven-oly opened on Jun 12, 2026
  

• Relativetime data not being generated for ICU 78

  unicode-org/conformance#540 · Filter by author sffc opened on Dec 11, 2025
  1

• ICU4X RelativeDatetime format not respecting Latn numbering system for locale "bn"

  bug
  Bug

  unicode-org/conformance#530 · Filter by author sven-oly opened on Sep 8, 2025 · 2024 Q3 ⟨P1⟩
  4

• Enable testing of CLDR and ICU pre-releases

  unicode-org/conformance#529 · Filter by author sffc opened on Sep 8, 2025 · High Priority ⟨P1⟩
  1

• Known issue filter should consider the platform/version

  unicode-org/conformance#517 · Filter by author sffc opened on Aug 25, 2025
  1

• Consider omitting "hexhash" filed in the test displays.

  enhancement
  Feature

  unicode-org/conformance#516 · Filter by author sven-oly opened on Aug 22, 2025

• Add page documenting bugs and problems found by Conformance testing

  enhancement
  unicode-org/conformance#508 · Filter by author sven-oly opened on Aug 13, 2025 · High Priority ⟨P1⟩
  1

  

• Consider using 3.10.0-22.0.dev of Dart

  techdebt
  unicode-org/conformance#500 · Filter by author sffc opened on Aug 7, 2025 · Backlog ⟨P3⟩
  1

• ICU4X collation failures: 5 tests fail with U+FFFE

  component-datagen
  unicode-org/conformance#498 · Filter by author sven-oly opened on Aug 6, 2025 · Backlog ⟨P3⟩
  1

• Update handling of known issues to be clearer - better UI?

  enhancement
  unicode-org/conformance#497 · Filter by author sven-oly opened on Aug 6, 2025 · High Priority ⟨P1⟩
  1

  

• Collation: Use compare type with strength to improve test precision

  Feature

  unicode-org/conformance#488 · Filter by author sven-oly opened on Jul 23, 2025 · Priority ⟨P2⟩

• ICU4C executor uses JSON-C, which has problems parsing null character \u0000 and surrogate pairs

  Bug

  unicode-org/conformance#473 · Filter by author sven-oly opened on Jul 7, 2025 · Backlog ⟨P3⟩
  5

• Segmenter results are inconsistent across platforms

  bug
  unicode-org/conformance#466 · Filter by author sven-oly opened on Jun 12, 2025 · Priority ⟨P2⟩
  1

• End-to-end should quit for Node JS when executor missing

  bug
  unicode-org/conformance#459 · Filter by author echeran opened on May 21, 2025 · High Priority ⟨P1⟩
  

• Add UI to compare test results other test runs: same platform/other ICU & same ICU/other platform

  enhancement
  unicode-org/conformance#449 · Filter by author sven-oly opened on May 3, 2025 · Priority ⟨P2⟩
  1

  

• Error logging: add name of failing piece of the pipeline to errors / warnings / critical

  enhancement
  unicode-org/conformance#432 · Filter by author sven-oly opened on Apr 1, 2025 · High Priority ⟨P1⟩
  3

  

• ICU4J: Plural rules fail when parsing to IEEE floating point yields incorrect precision

  tracking
  unicode-org/conformance#423 · Filter by author sven-oly opened on Mar 26, 2025 · Backlog ⟨P3⟩
  1

• In Plurals and other components, don't emit non-modern locales

  bug
  unicode-org/conformance#422 · Filter by author sffc opened on Mar 26, 2025 · Priority ⟨P2⟩
  3

• Plural Rules: ICU4J and ICU4C don't have a good way to express select for a floating point value

  tracking
  unicode-org/conformance#420 · Filter by author sven-oly opened on Mar 25, 2025 · Priority ⟨P2⟩
  2