Issues

• [C++] Option to write generated header files to a separate directory

  antlr/antlr4#4975 · Filter by author hamidelmaazouz opened on Sep 12, 2026

• Outdated FOSS used in antlr

  antlr/antlr4#4972 · Filter by author hirastogi opened on Aug 20, 2026

• Lexer::setInputStream calls reset() before updating _input, leading to use-after-free when reusing lexer across multiple statements

  antlr/antlr4#4969 · Filter by author xiangy6 opened on Aug 10, 2026

• Is there a patched release planned for ANTLR 4

  antlr/antlr4#4966 · Filter by author jayavelu-mns opened on Aug 3, 2026
  1

• caching parse tree object

  antlr/antlr4#4965 · Filter by author janikFrick opened on Jul 30, 2026
  3

• TypeScript runtime tests fail in CI since ~April: ts-node incompatible with typescript@latest (TS 7)

  antlr/antlr4#4962 · Filter by author analog-cbarber opened on Jul 25, 2026

• Code is regenerated all the time

  antlr/antlr4#4958 · Filter by author vborovikov opened on Jul 20, 2026

• CVE-2026-13500 Resolution

  antlr/antlr4#4952 · Filter by author rseeton opened on Jul 3, 2026
  15

• missing std::istream support in UnbufferedCharStream

  antlr/antlr4#4950 · Filter by author esohns opened on Jun 22, 2026

• Are there plans for a new release?

  antlr/antlr4#4940 · Filter by author DavyLandman opened on May 20, 2026
  4

• [Java] Data races in ANTLR runtime

  antlr/antlr4#4936 · Filter by author hcantunc opened on May 11, 2026
  6

• cannot find tokens file f2c_create_db/parser/make/MakeLexer.tokens

  antlr/antlr4#4934 · Filter by author jirislaby opened on Apr 22, 2026
  2

• Increase version of org.codehaus.plexus:plexus-utils

  antlr/antlr4#4932 · Filter by author martintanler opened on Apr 10, 2026

• [Cpp runtime] Not printing correct debugging output with trace.

  antlr/antlr4#4929 · Filter by author kaby76 opened on Mar 16, 2026

• Add a way to limit recursion depth

  antlr/antlr4#4928 · Filter by author nyh opened on Mar 16, 2026
  1

• [New Grammar Request] UniBasic / UniVerse BASIC (Rocket U2 / Pick MultiValue)

  antlr/antlr4#4927 · Filter by author hdharmarathna opened on Mar 12, 2026
  2

• [C++] Failed assertion in Parser::getParseListeners : "vector iterators in range are from different containers", bug in Parser::setTrimParseTree

  antlr/antlr4#4926 · Filter by author Olivier11515 opened on Mar 11, 2026
  1

• C++ runtime installs headers in the wrong location

  antlr/antlr4#4924 · Filter by author pstieber opened on Mar 7, 2026

• Nuget package for 4.13.2

  antlr/antlr4#4922 · Filter by author TCodeTransformers opened on Feb 24, 2026

• C++ visitors name function parameters inconsistently

  antlr/antlr4#4919 · Filter by author geoff-m opened on Jan 29, 2026

• requiresSeek assignment is ineffective in LexerActionExecutor::execute() (lambda value capture causes state isolation)

  antlr/antlr4#4915 · Filter by author aoweichenn opened on Jan 2, 2026

• Unexpected glitch in left-recursion handling and ambiguity.

  antlr/antlr4#4911 · Filter by author kaby76 opened on Dec 13, 2025
  2

• Local installation of antlr4 when pointed to cpp standard v17 (from v11) does not compile anymore

  antlr/antlr4#4910 · Filter by author Tephilla opened on Dec 9, 2025

• [Bug] SyntaxError antlr4 does not provide an export named 'DecisionState' when use typescript esm import

  antlr/antlr4#4905 · Filter by author lisonge opened on Nov 22, 2025
  3

• [runtime/Dart] semantic_context.dart imports from 'package:antlr4', it should not.

  antlr/antlr4#4904 · Filter by author kaby76 opened on Nov 19, 2025