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7a87e7d199893ed7d737d5d59931af263be9a492
Nim/compiler
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metagn 7a87e7d199 fix compiler crash with uncheckedAssign and range/distinct discrims [backport] (#25585) 
On simple code like:

```nim
type Foo = object
  case x: range[0..7]
  of 0..2:
    a: string
  else:
    b: string

var foo = Foo()
{.cast(uncheckedAssign).}:
  foo.x = 5
```

The compiler tries to generate a destructor for the variant fields by
checking if the discrim is equal to the old one, but the type is not
skipped when looking for an `==` operator in system, so any
discriminator with type `range`/`distinct`/etc crashes with:

```
(10, 9) Error: can't find magic equals operator for type kind tyRange
```

This is fixed by just skipping abstract types.
2026-03-07 07:39:57 +01:00
..
ic
IC: massive cleanup, NIF26 support, docs about its inner workings (#25427)
2026-01-16 12:19:17 +01:00
plugins
massive refactoring for IC (#25282)
2025-11-13 21:31:24 +01:00
aliasanalysis.nim
…
aliases.nim
…
ast2nif.nim
IC: progress (#25453)
2026-01-24 06:07:41 +01:00
ast.nim
IC: progress (#25453)
2026-01-24 06:07:41 +01:00
astalgo.nim
IC: progress (#25314)
2025-12-01 22:59:12 +01:00
astdef.nim
fixes #16754 (#25519)
2026-02-24 09:39:06 +01:00
astmsgs.nim
…
astyaml.nim
…
bitsets.nim
…
btrees.nim
Yrc typos and omissions (#25500)
2026-02-10 13:21:35 +01:00
cbuilderbase.nim
fixes nightlies failures (#24456)
2024-11-19 08:51:54 +01:00
cbuilderdecls.nim
fixes #25405; initialization for objects with opaque importc fields (#25406)
2026-01-05 15:21:59 +01:00
cbuilderexprs.nim
cbuilder: use constants for type names, some cleanups (#24438)
2024-11-18 17:34:37 +01:00
cbuilderstmts.nim
cbuilder: use constants for type names, some cleanups (#24438)
2024-11-18 17:34:37 +01:00
ccgcalls.nim
Yrc typos and omissions (#25500)
2026-02-10 13:21:35 +01:00
ccgexprs.nim
fix #25508; ignores void types in the backends (#25550)
2026-03-05 23:08:51 +01:00
ccgliterals.nim
YRC: threadsafe cycle collection for Nim (#25495)
2026-02-10 00:04:11 +01:00
ccgmerge_unused.nim
…
ccgreset.nim
fixes #25205 #14873; resets importc obj with nimZeroMem in specializeResetT for refc (#25207)
2025-10-06 21:55:31 +02:00
ccgstmts.nim
IC: code generation progress (#25379)
2025-12-29 00:20:33 +01:00
ccgthreadvars.nim
cbuilder: use constants for type names, some cleanups (#24438)
2024-11-18 17:34:37 +01:00
ccgtrav.nim
cbuilder: use constants for type names, some cleanups (#24438)
2024-11-18 17:34:37 +01:00
ccgtypes.nim
fix #25508; ignores void types in the backends (#25550)
2026-03-05 23:08:51 +01:00
ccgutils.nim
implements internal sink copy (#24747)
2025-03-10 11:20:44 +01:00
cgen.nim
Yrc typos and omissions (#25500)
2026-02-10 13:21:35 +01:00
cgendata.nim
IC: code generation progress (#25379)
2025-12-29 00:20:33 +01:00
cgmeth.nim
IC: progress (#25344)
2025-12-11 18:22:38 +01:00
closureiters.nim
fixes #25572 ICE evaluating closure iter with object conversion (#25575)
2026-03-04 05:45:16 +01:00
cmdlinehelper.nim
…
commands.nim
YRC: threadsafe cycle collection for Nim (#25495)
2026-02-10 00:04:11 +01:00
compiler.nimble
…
concepts.nim
reduce imports (#25398)
2025-12-31 13:33:57 +01:00
condsyms.nim
fixes #24706; Warn on implicit range downsizing (#25451)
2026-02-01 17:06:33 +01:00
debuginfo.nim
…
debugutils.nim
…
depends.nim
…
deps.nim
IC: remember which modules are from the NIF cache (#25443)
2026-01-22 04:26:20 +01:00
dfa.nim
Yrc typos and omissions (#25500)
2026-02-10 13:21:35 +01:00
docgen2.nim
…
docgen.nim
Raw switch for jsondoc (#24568)
2026-01-11 18:39:01 +08:00
enumtostr.nim
massive refactoring for IC (#25282)
2025-11-13 21:31:24 +01:00
errorhandling.nim
…
evalffi.nim
IC: progress (#25344)
2025-12-11 18:22:38 +01:00
evaltempl.nim
IC: progress (#25344)
2025-12-11 18:22:38 +01:00
expanddefaults.nim
…
extccomp.nim
Create Mac app bundle for GUI apps on macOS when --app:gui is used (#25042)
2025-07-14 23:14:06 +02:00
filter_tmpl.nim
…
filters.nim
…
gorgeimpl.nim
…
guards.nim
IC: progress (#25344)
2025-12-11 18:22:38 +01:00
hlo.nim
Fixes #25304 proper test for hlo recursion limit (#25305)
2025-11-21 21:26:43 +01:00
idents.nim
…
importer.nim
IC: remember which modules are from the NIF cache (#25443)
2026-01-22 04:26:20 +01:00
index.nim
…
injectdestructors.nim
fixes #25552 (#25582)
2026-03-05 12:40:48 +01:00
inliner.nim
IC progress (#25283)
2025-11-25 12:49:23 +01:00
installer.ini
fixes nightlies due to UB errors; increase maxCPU hard limits (#25219)
2025-10-13 13:47:06 +02:00
int128.nim
…
isolation_check.nim
docs: fix typos (#24573)
2024-12-27 19:42:18 +01:00
jsgen.nim
fix #25508; ignores void types in the backends (#25550)
2026-03-05 23:08:51 +01:00
jstypes.nim
fixes #25043: js tyUserTypeClass internal error (#25044)
2025-07-14 23:15:44 +02:00
lambdalifting.nim
IC: progress (#25344)
2025-12-11 18:22:38 +01:00
layeredtable.nim
reduce imports (#25398)
2025-12-31 13:33:57 +01:00
layouter.nim
…
lexer.nim
fixes #19831; add --styleCheck:warning (#25456)
2026-01-23 22:50:00 +01:00
liftdestructors.nim
yrc progress (#25534)
2026-02-23 13:39:55 +01:00
liftlocals.nim
IC: progress (#25344)
2025-12-11 18:22:38 +01:00
lineinfos.nim
enable --warning:ImplicitRangeConversion (#25477)
2026-02-24 09:40:21 +01:00
linter.nim
fixes #19831; add --styleCheck:warning (#25456)
2026-01-23 22:50:00 +01:00
llstream.nim
repl: support eof, define object with fields (#24784)
2025-03-25 07:41:17 +01:00
lookups.nim
IC: massive cleanup, NIF26 support, docs about its inner workings (#25427)
2026-01-16 12:19:17 +01:00
lowerings.nim
IC: progress (#25344)
2025-12-11 18:22:38 +01:00
macrocacheimpl.nim
…
magicsys.nim
fix compiler crash with uncheckedAssign and range/distinct discrims [backport] (#25585)
2026-03-07 07:39:57 +01:00
main.nim
IC: massive cleanup, NIF26 support, docs about its inner workings (#25427)
2026-01-16 12:19:17 +01:00
mangleutils.nim
…
modulegraphs.nim
IC: remember which modules are from the NIF cache (#25443)
2026-01-22 04:26:20 +01:00
modulepaths.nim
IC: progress (#25420)
2026-01-09 13:10:04 +01:00
modules.nim
massive refactoring for IC (#25282)
2025-11-13 21:31:24 +01:00
msgs.nim
Yrc typos and omissions (#25500)
2026-02-10 13:21:35 +01:00
nifbackend.nim
refactoring for IC (#25395)
2025-12-29 13:52:22 +01:00
nifgen.nim
fixes #25488; Strings can be compared against nil (#25489)
2026-02-07 20:46:50 +01:00
nilcheck.nim
IC: progress (#25344)
2025-12-11 18:22:38 +01:00
nim.cfg
enable --warning:ImplicitRangeConversion (#25477)
2026-02-24 09:40:21 +01:00
nim.nim
IC: run nifmake automatically (#25415)
2026-01-07 13:45:26 +01:00
nimblecmd.nim
…
nimconf.nim
add srcDir variable to nim.cfg (#24919)
2025-10-23 09:05:05 +02:00
nimeval.nim
massive refactoring for IC (#25282)
2025-11-13 21:31:24 +01:00
nimlexbase.nim
…
nimpaths.nim
…
nimsets.nim
IC: progress (#25344)
2025-12-11 18:22:38 +01:00
nodejs.nim
…
nodekinds.nim
…
nversion.nim
…
optimizer.nim
fixes #24806; don't elide wasMoved when syms are used in blocks (#24831)
2025-04-03 12:54:00 +02:00
options.nim
YRC: threadsafe cycle collection for Nim (#25495)
2026-02-10 00:04:11 +01:00
packagehandling.nim
…
packages.nim
massive refactoring for IC (#25282)
2025-11-13 21:31:24 +01:00
parampatterns.nim
fixes #23949; cannot return lent expression from conditionals like case (#25190)
2025-09-24 06:29:57 +02:00
parser.nim
Improve error message for keywords as parameters (#25052)
2025-07-14 23:15:02 +02:00
passaux.nim
…
passes.nim
IC: massive cleanup, NIF26 support, docs about its inner workings (#25427)
2026-01-16 12:19:17 +01:00
pathutils.nim
…
patterns.nim
clean up opensym encounters in compiler (#24866)
2025-04-12 08:39:11 +02:00
pipelines.nim
IC: progress (#25453)
2026-01-24 06:07:41 +01:00
pipelineutils.nim
…
platform.nim
fixes nightlies due to UB errors; increase maxCPU hard limits (#25219)
2025-10-13 13:47:06 +02:00
pluginsupport.nim
…
pragmas.nim
Yrc typos and omissions (#25500)
2026-02-10 13:21:35 +01:00
prefixmatches.nim
…
procfind.nim
…
pushpoppragmas.nim
fixes push warnings for sempass2 (#23603)
2024-09-03 09:19:52 +02:00
readme.md
…
renderer.nim
IC: progress (#25453)
2026-01-24 06:07:41 +01:00
renderverbatim.nim
…
reorder.nim
clean up opensym encounters in compiler (#24866)
2025-04-12 08:39:11 +02:00
rodutils.nim
…
ropes.nim
…
saturate.nim
…
scriptconfig.nim
YRC: threadsafe cycle collection for Nim (#25495)
2026-02-10 00:04:11 +01:00
sem.nim
Yrc typos and omissions (#25500)
2026-02-10 13:21:35 +01:00
semcall.nim
fixes #25262; proc v[T: typedesc]() = discard / v[0]() compiles even though 0 isn't a typedesc (#25558)
2026-02-28 23:01:09 +01:00
semdata.nim
IC: massive cleanup, NIF26 support, docs about its inner workings (#25427)
2026-01-16 12:19:17 +01:00
semexprs.nim
Yrc typos and omissions (#25500)
2026-02-10 13:21:35 +01:00
semfields.nim
IC: progress (#25344)
2025-12-11 18:22:38 +01:00
semfold.nim
Do not directly cast int128 to uint64 in semfold (#25396)
2025-12-30 23:09:01 +01:00
semgnrc.nim
IC: progress (#25344)
2025-12-11 18:22:38 +01:00
seminst.nim
Refactoring #25302; don't store procedure's parameter types to PType.sonsImpl (#25351)
2025-12-26 21:59:38 +01:00
semmacrosanity.nim
IC: progress (#25344)
2025-12-11 18:22:38 +01:00
semmagic.nim
yrc progress (#25534)
2026-02-23 13:39:55 +01:00
semobjconstr.nim
IC: progress (#25344)
2025-12-11 18:22:38 +01:00
semparallel.nim
IC: progress (#25344)
2025-12-11 18:22:38 +01:00
sempass2.nim
allows implicitRangeConvs for literals (#25542)
2026-02-25 19:10:00 +01:00
semstmts.nim
YRC: threadsafe cycle collection for Nim (#25495)
2026-02-10 00:04:11 +01:00
semstrictfuncs.nim
…
semtempl.nim
IC: massive cleanup, NIF26 support, docs about its inner workings (#25427)
2026-01-16 12:19:17 +01:00
semtypes.nim
fixes #21281; proc f(x: static[auto]) doesn't treat x as static (#25543)
2026-02-25 19:09:24 +01:00
semtypinst.nim
fixes #25509; removes void fields from a named tuple type (#25515)
2026-02-24 10:47:14 +01:00
sighashes.nim
fixes #25475; incompatible types errors for array types with different index types (#25505)
2026-02-13 22:59:21 +01:00
sigmatch.nim
fixes #25262; proc v[T: typedesc]() = discard / v[0]() compiles even though 0 isn't a typedesc (#25558)
2026-02-28 23:01:09 +01:00
sinkparameter_inference.nim
Refactoring #25302; don't store procedure's parameter types to PType.sonsImpl (#25351)
2025-12-26 21:59:38 +01:00
sizealignoffsetimpl.nim
IC: progress (#25344)
2025-12-11 18:22:38 +01:00
sourcemap.nim
…
spawn.nim
Yrc typos and omissions (#25500)
2026-02-10 13:21:35 +01:00
suggest.nim
refactoring for IC (#25395)
2025-12-29 13:52:22 +01:00
suggestsymdb.nim
NimSuggest: Fix for the inlay exception hints with generic procs (#23610)
2025-07-18 08:44:36 +02:00
syntaxes.nim
…
tccgen.nim
…
transf.nim
IC: keep package information (#25350)
2025-12-18 09:34:39 +01:00
trees.nim
clean up opensym encounters in compiler (#24866)
2025-04-12 08:39:11 +02:00
treetab.nim
reduce imports (#25398)
2025-12-31 13:33:57 +01:00
typeallowed.nim
fixes #25127; disable lent types as object fields in returns (#25189)
2025-09-23 13:04:27 +02:00
typekeys.nim
IC: keep package information (#25350)
2025-12-18 09:34:39 +01:00
types.nim
fixes #25459; hashType returns different hash from instantiated generics with distinct types (#25471)
2026-02-01 07:01:55 +01:00
typesrenderer.nim
…
varpartitions.nim
massive refactoring for IC (#25282)
2025-11-13 21:31:24 +01:00
vm.nim
Yrc typos and omissions (#25500)
2026-02-10 13:21:35 +01:00
vmconv.nim
…
vmdef.nim
fixes #25254; fixes #10395; Invalid pred in when swallowed (#25385)
2025-12-25 00:04:18 +01:00
vmdeps.nim
IC: progress (#25344)
2025-12-11 18:22:38 +01:00
vmgen.nim
fixes #25482; ICE leaking temporary 3 slotTempInt (#25483)
2026-02-05 05:41:54 +01:00
vmhooks.nim
…
vmmarshal.nim
…
vmops.nim
fixes #24941; missing < (less than), cmp for cstring (#24942)
2025-05-10 08:26:21 +02:00
vmprofiler.nim
massive refactoring for IC (#25282)
2025-11-13 21:31:24 +01:00
vtables.nim
IC: massive cleanup, NIF26 support, docs about its inner workings (#25427)
2026-01-16 12:19:17 +01:00
wordrecg.nim
…

readme.md

Nim Compiler

  • This directory contains the Nim compiler written in Nim.
  • Note that this code has been translated from a bootstrapping version written in Pascal.
  • So the code is not a poster child of good Nim code.

See Internals of the Nim Compiler for more information.