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math: nan-related signops vary with C compiler.

bugSomething isn't workingSomething isn't working

Status: Open.

#1624 In nim-works/nimskull;

· Luyten-Orion opened on Sep 27, 2025

template substitution leads to compiler crash (ident called on symbol node)

bugSomething isn't workingSomething isn't working

compiler/semRelated to semantic-analysis system of the compilerRelated to semantic-analysis system of the compiler

Status: Open.

Bug

#1619 In nim-works/nimskull;

· Luyten-Orion opened on Sep 19, 2025

fields iterators causes incorrect lineinfo placement on <code>cannot evaluate at compile time</code> errors

bugSomething isn't workingSomething isn't working

compiler/semRelated to semantic-analysis system of the compilerRelated to semantic-analysis system of the compiler

good first issueEasy-to-start-with issue requiring no in-depth knowledge or complex implementation.Easy-to-start-with issue requiring no in-depth knowledge or complex implementation.

Status: Open.

Bug

#1617 In nim-works/nimskull;

· Luyten-Orion opened on Sep 16, 2025

indexing over a statically declared string with a statically declared int raises <code>FieldDefect</code>.

bugSomething isn't workingSomething isn't working

compiler/msgsCompiler output and diagnostic subsystem: error and warnig reporting, information, debuggingCompiler output and diagnostic subsystem: error and warnig reporting, information, debugging

good first issueEasy-to-start-with issue requiring no in-depth knowledge or complex implementation.Easy-to-start-with issue requiring no in-depth knowledge or complex implementation.

Status: Open.

Bug

#1604 In nim-works/nimskull;

· Luyten-Orion opened on Aug 29, 2025

Converting derived type to distinct base type crashes compiler

bugSomething isn't workingSomething isn't working

compilerGeneral compiler tagGeneral compiler tag

compiler/semRelated to semantic-analysis system of the compilerRelated to semantic-analysis system of the compiler

Status: Open.

Bug

#1598 In nim-works/nimskull;

· bptato opened on Aug 26, 2025

Restore <code>sink</code> annotations in the standard library where sensible

stdlibStandard libraryStandard library

Status: Open.

Task

#1597 In nim-works/nimskull;

· zerbina opened on Aug 26, 2025

Rework error handling in the compiler

compilerGeneral compiler tagGeneral compiler tag

compiler/msgsCompiler output and diagnostic subsystem: error and warnig reporting, information, debuggingCompiler output and diagnostic subsystem: error and warnig reporting, information, debugging

compiler/semRelated to semantic-analysis system of the compilerRelated to semantic-analysis system of the compiler

Status: Open.

Task

#1594 In nim-works/nimskull;

· zerbina opened on Aug 24, 2025

· 

Diagnostics and error messages

recursive generic type results in wrong type

bugSomething isn't workingSomething isn't working

compiler/semRelated to semantic-analysis system of the compilerRelated to semantic-analysis system of the compiler

Status: Open.

Bug

#1571 In nim-works/nimskull;

· zerbina opened on Aug 3, 2025

osproc: hardcoded error message relating to the binary not being a command

bugSomething isn't workingSomething isn't working

stdlibStandard libraryStandard library

Status: Open.

Bug

#1557 In nim-works/nimskull;

· Luyten-Orion opened on Jun 20, 2025

ambiguous behaviour: optional parameter after <code>varargs</code> of the same type has unclear behaviour

compiler/semRelated to semantic-analysis system of the compilerRelated to semantic-analysis system of the compiler

language-designLanguage design syntax, semantics, types, statics and dynamics.Language design syntax, semantics, types, statics and dynamics.

Status: Open.

Bug

#1556 In nim-works/nimskull;

· Luyten-Orion opened on Jun 18, 2025

sem: compiler crash on nested routine with <code>typedesc</code> parameter within generic parent

bugSomething isn't workingSomething isn't working

compiler/semRelated to semantic-analysis system of the compilerRelated to semantic-analysis system of the compiler

Status: Open.

Bug

#1553 In nim-works/nimskull;

· Luyten-Orion opened on Jun 4, 2025

<code>var T</code> return value can be uninitialized

bugSomething isn't workingSomething isn't working

compiler/semRelated to semantic-analysis system of the compilerRelated to semantic-analysis system of the compiler

Status: Open.

Bug

#1552 In nim-works/nimskull;

· alaviss opened on May 27, 2025