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OpenJul 19, 2026
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•Last updated Intended to be worked on next. The Zig Core Team solves as many of these issues as possible for the upcoming release, however these issues do not block the release.
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compiler_rt missing
__gnu_thumb1_case_shiarch-arm32-bit Arm32-bit Armcontributor friendlyThis issue is limited in scope and/or knowledge of Zig internals.This issue is limited in scope and/or knowledge of Zig internals.enhancementSolving this issue will likely involve adding new logic or components to the codebase.Solving this issue will likely involve adding new logic or components to the codebase.Status: Open.#24558 In ziglang/zig;Unclear error message when passing wrong type to allocator.free
error messageThis issue points out an error message that is unhelpful and should be improved.This issue points out an error message that is unhelpful and should be improved.Status: Open.#14492 In ziglang/zig;build.zig dependencies: support url mirrors
enhancementSolving this issue will likely involve adding new logic or components to the codebase.Solving this issue will likely involve adding new logic or components to the codebase.zig build systemstd.Build, the build runner, `zig build` subcommand, package managementstd.Build, the build runner, `zig build` subcommand, package managementStatus: Open.#14291 In ziglang/zig;ability to specify additional build dependency mirrors that affect any package in the full dependency tree
enhancementSolving this issue will likely involve adding new logic or components to the codebase.Solving this issue will likely involve adding new logic or components to the codebase.zig build systemstd.Build, the build runner, `zig build` subcommand, package managementstd.Build, the build runner, `zig build` subcommand, package managementStatus: Open.#14292 In ziglang/zig;ability to fetch dependencies via git+ssh protocol
contributor friendlyThis issue is limited in scope and/or knowledge of Zig internals.This issue is limited in scope and/or knowledge of Zig internals.enhancementSolving this issue will likely involve adding new logic or components to the codebase.Solving this issue will likely involve adding new logic or components to the codebase.zig build systemstd.Build, the build runner, `zig build` subcommand, package managementstd.Build, the build runner, `zig build` subcommand, package managementStatus: Open.#14295 In ziglang/zig;Documentation for 'align' Does Not Include Bitfield Alignment
contributor friendlyThis issue is limited in scope and/or knowledge of Zig internals.This issue is limited in scope and/or knowledge of Zig internals.enhancementSolving this issue will likely involve adding new logic or components to the codebase.Solving this issue will likely involve adding new logic or components to the codebase.Status: Open.#14361 In ziglang/zig;Self hosted emitting much more machine code in final binary (freestanding)
regressionIt worked in a previous version of Zig, but stopped working.It worked in a previous version of Zig, but stopped working.Status: Open.#13421 In ziglang/zig;building wasm - zig build-lib file.c produces no result while zig translate-c file.c and zig build-lib file.zig does
arch-wasm32-bit and 64-bit WebAssembly32-bit and 64-bit WebAssemblybugObserved behavior contradicts documented or intended behaviorObserved behavior contradicts documented or intended behaviorStatus: Open.#13509 In ziglang/zig;[zig cc] Inconsistencies choosing between static and dynamic library when both are available
bugObserved behavior contradicts documented or intended behaviorObserved behavior contradicts documented or intended behaviorStatus: Open.#14111 In ziglang/zig;- Status: Open.#14381 In ziglang/zig;
Type mismatched when a function returns a generic function
bugObserved behavior contradicts documented or intended behaviorObserved behavior contradicts documented or intended behaviorStatus: Open.#14540 In ziglang/zig;unreachable error on bitcasting packed struct
bugObserved behavior contradicts documented or intended behaviorObserved behavior contradicts documented or intended behaviorStatus: Open.#14578 In ziglang/zig;zig relies too much on
/usr/bin/envto detect dynamic-linker pathbugObserved behavior contradicts documented or intended behaviorObserved behavior contradicts documented or intended behavioros-linuxLinuxLinuxzig build systemstd.Build, the build runner, `zig build` subcommand, package managementstd.Build, the build runner, `zig build` subcommand, package managementStatus: Open.#14577 In ziglang/zig;zig env: lib_dir and std_dir are relative paths in stage2, stage3 and stage4
bugObserved behavior contradicts documented or intended behaviorObserved behavior contradicts documented or intended behaviorStatus: Open.#14439 In ziglang/zig;- Status: Open.#14543 In ziglang/zig;
stage2/lllvm: panic in lowering
maxInt(usize)slice endbugObserved behavior contradicts documented or intended behaviorObserved behavior contradicts documented or intended behaviorStatus: Open.#14627 In ziglang/zig;- Status: Open.#14650 In ziglang/zig;
use a declarative table for CLI linker argument parsing
contributor friendlyThis issue is limited in scope and/or knowledge of Zig internals.This issue is limited in scope and/or knowledge of Zig internals.enhancementSolving this issue will likely involve adding new logic or components to the codebase.Solving this issue will likely involve adding new logic or components to the codebase.zig ccZig as a drop-in C compiler featureZig as a drop-in C compiler featureStatus: Open.#14663 In ziglang/zig;Segmentation fault compiling Zig struct with multiple fields with default values
bugObserved behavior contradicts documented or intended behaviorObserved behavior contradicts documented or intended behaviorStatus: Open.#14683 In ziglang/zig;Incorrect error message when using continue with a return value
error messageThis issue points out an error message that is unhelpful and should be improved.This issue points out an error message that is unhelpful and should be improved.Status: Open.#14687 In ziglang/zig;Returning reference to union field at comptime crashes compiler
bugObserved behavior contradicts documented or intended behaviorObserved behavior contradicts documented or intended behaviorfrontendTokenization, parsing, AstGen, Sema, and Liveness.Tokenization, parsing, AstGen, Sema, and Liveness.Status: Open.#14724 In ziglang/zig;Confusing error message if you try to use a reversed range with "for" with comptime-known values
error messageThis issue points out an error message that is unhelpful and should be improved.This issue points out an error message that is unhelpful and should be improved.Status: Open.#14758 In ziglang/zig;Error message column indicator points to the incorrect part of the line when using @as when @intCast was necessary
bugObserved behavior contradicts documented or intended behaviorObserved behavior contradicts documented or intended behaviorStatus: Open.#14803 In ziglang/zig;Show error return trace whenever catch block reaches unreachable
error messageThis issue points out an error message that is unhelpful and should be improved.This issue points out an error message that is unhelpful and should be improved.Status: Open.#14807 In ziglang/zig;expected type 'type', found 'fn(comptime type) type' complains about wrong line
bugObserved behavior contradicts documented or intended behaviorObserved behavior contradicts documented or intended behaviorStatus: Open.#14768 In ziglang/zig;
