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Bug in heapsnapshot generation for arrays of inlined objects

GCGarbage collectorGarbage collector

good first issueIndicates a good issue for first-time contributors to JuliaIndicates a good issue for first-time contributors to Julia

observabilitymetrics, timing, understandability, reflection, logging, ...metrics, timing, understandability, reflection, logging, ...

Status: Open.

Bug

#61396 In JuliaLang/julia;

· NHDaly opened on Mar 23, 2026

Dynamic Dispatch is very slow when dispatching on parameterized types

performanceMust go fasterMust go faster

types and dispatchTypes, subtyping and method dispatchTypes, subtyping and method dispatch

Status: Open.

#60701 In JuliaLang/julia;

· NHDaly opened on Jan 15, 2026

Always automatically precompile __init__() in all packages

compiler:precompilationPrecompilation of modulesPrecompilation of modules

Status: Open.

#60112 In JuliaLang/julia;

· NHDaly opened on Nov 12, 2025

Make Finalizer behavior at exit safe.

Status: Open.

#59422 In JuliaLang/julia;

· NHDaly opened on Aug 28, 2025

Precompiling a function which spawns a Task does not precompile the Task's function

compiler:precompilationPrecompilation of modulesPrecompilation of modules

multithreadingBase.Threads and related functionalityBase.Threads and related functionality

trimmingIssues with trimming functionality or PR's relevant to its performance/functionalityIssues with trimming functionality or PR's relevant to its performance/functionality

Status: Open.

#58818 In JuliaLang/julia;

· NHDaly opened on Jun 25, 2025

Allow constructing a SubString{String} with codeunit indexing, even if substring isn't valid UTF-8.

designDesign of APIs or of the language itselfDesign of APIs or of the language itself

strings"Strings!""Strings!"

Status: Open.

#58048 In JuliaLang/julia;

· NHDaly opened on Apr 8, 2025

Call-site @noinline footgun: it prevents inlining for all calls in an expression, not just the top-level call, and can cause type instability.

macros@macros@macros

Status: Open.

#57396 In JuliaLang/julia;

· NHDaly opened on Feb 13, 2025

Disallow _Atomic(uint64_t) in structs, since some C compilers have an alignment bug

bugIndicates an unexpected problem or unintended behaviorIndicates an unexpected problem or unintended behavior

system:32-bitAffects only 32-bit systemsAffects only 32-bit systems

Status: Open.

#56626 In JuliaLang/julia;

· NHDaly opened on Nov 20, 2024

checked_rem and checked_mod don't follow the same promotion rules as regular rem and mod

bugIndicates an unexpected problem or unintended behaviorIndicates an unexpected problem or unintended behavior

mathsMathematical functionsMathematical functions

types and dispatchTypes, subtyping and method dispatchTypes, subtyping and method dispatch

Status: Open.

Bug

#54485 In JuliaLang/julia;

· NHDaly opened on May 15, 2024

Race condition in wait(::Process) with process end?

ioInvolving the I/O subsystem: libuv, read, write, etc.Involving the I/O subsystem: libuv, read, write, etc.

Status: Open.

#54146 In JuliaLang/julia;

· NHDaly opened on Apr 19, 2024

process_exited(p) returns false for <defunct> zombie object on macos

ioInvolving the I/O subsystem: libuv, read, write, etc.Involving the I/O subsystem: libuv, read, write, etc.

system:macAffects only macOSAffects only macOS

Status: Open.

#54145 In JuliaLang/julia;

· NHDaly opened on Apr 19, 2024

@noinline confuses @code_typed reporting wrong return type when return value is unused.

good first issueIndicates a good issue for first-time contributors to JuliaIndicates a good issue for first-time contributors to Julia

observabilitymetrics, timing, understandability, reflection, logging, ...metrics, timing, understandability, reflection, logging, ...

Status: Open.

#52772 In JuliaLang/julia;

· NHDaly opened on Jan 5, 2024