Issues

• Repeated short reads cause quadratic text-container parsing and allocation

  amazon-ion/ion-rust#1066 · Filter by author dantrapp opened on Oct 8, 2026

• Improve speed of text encoding

  enhancement
  amazon-ion/ion-rust#1063 · Filter by author popematt opened on Oct 5, 2026

• Investigate whether style changes can improve Ion text write speed

  enhancement
  amazon-ion/ion-rust#1062 · Filter by author popematt opened on Oct 5, 2026

• Outline cold error paths in ion-rs hot paths

  enhancement
  amazon-ion/ion-rust#1052 · Filter by author popematt opened on Sep 17, 2026

• Split reader and writer symbol tables; arena-back the writer's interner

  enhancement
  amazon-ion/ion-rust#1051 · Filter by author popematt opened on Sep 16, 2026

• Run all --lib tests in miri

  amazon-ion/ion-rust#1050 · Filter by author popematt opened on Sep 16, 2026
  1

• Binary reader silently wraps out-of-range timestamp fields via unchecked as casts

  bug
  amazon-ion/ion-rust#1046 · Filter by author popematt opened on Sep 8, 2026

• add a pub assert_ion_eq! macro

  enhancement
  amazon-ion/ion-rust#1045 · Filter by author popematt opened on Sep 4, 2026

• Reduce per-document fixed costs for small binary Ion 1.0 documents (~half of Element::read_one time on a 228-byte document)

  amazon-ion/ion-rust#1038 · Filter by author hsbakshi opened on Aug 15, 2026
  1

• Reader errors on unresolvable shared symbol table import even when max_id is defined

  amazon-ion/ion-rust#1036 · Filter by author hsbakshi opened on Aug 13, 2026
  1

• experimental-chrono conversions should be fallible

  bug
  amazon-ion/ion-rust#1035 · Filter by author popematt opened on Aug 11, 2026
  2

• to_utc() returns unknown offset instead of +00:00

  bug
  amazon-ion/ion-rust#1034 · Filter by author popematt opened on Aug 11, 2026

• Binary encoder can write timestamp with year 0 (invalid Ion)

  bug
  amazon-ion/ion-rust#1033 · Filter by author popematt opened on Aug 11, 2026
  1

• Consider simplifying crate features by having only one unstable or experimental feature flag

  amazon-ion/ion-rust#1027 · Filter by author popematt opened on Jun 11, 2026

• Support a .with_optional_field(name, value) method on StructBuilder

  enhancement
  amazon-ion/ion-rust#1015 · Filter by author sadderchris opened on Nov 20, 2025

• chore: Deprecation of generic-array 0.14 forcing update of digest crate

  amazon-ion/ion-rust#1009 · Filter by author nirosys opened on Oct 13, 2025

• Mathematical and convenience operations on the numeric types (Int, Decimal, Float)

  enhancement
  amazon-ion/ion-rust#970 · Filter by author jobarr-amzn opened on Jun 3, 2025

• ion-tests needs a better way to capture encoding context

  bug
  amazon-ion/ion-rust#967 · Filter by author zslayton opened on May 23, 2025
  2

• Avoid symbol table append for first write / option to avoid LST appends

  enhancement
  amazon-ion/ion-rust#966 · Filter by author jobarr-amzn opened on May 19, 2025

• Reader does not detect encoding correctly when stream buffer requires filling while in IVM

  bug
  amazon-ion/ion-rust#954 · Filter by author popematt opened on Apr 16, 2025
  1

• Conformance tests failing due to unrecognized encoding

  amazon-ion/ion-rust#943 · Filter by author nirosys opened on Mar 26, 2025
  1

• Conformance tests failing due to unimplemented system macros

  amazon-ion/ion-rust#942 · Filter by author nirosys opened on Mar 26, 2025
  

• ion_rs::serde::ser::ValueSerializer to be more type-preserving?

  enhancement
  amazon-ion/ion-rust#933 · Filter by author barries opened on Mar 8, 2025
  2

• Symbol value transcription is not working

  bug
  amazon-ion/ion-rust#929 · Filter by author nirosys opened on Mar 6, 2025
  2

• Finish peek feature in higher-level readers

  enhancement
  amazon-ion/ion-rust#925 · Filter by author jobarr-amzn opened on Mar 4, 2025