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e97b0bb541ee182c4f38709e2dbbaee03be12138
Nim/compiler
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bptato e97b0bb541 Do not directly cast int128 to uint64 in semfold (#25396) 
int128 is an array of uint32s, so while this works on little-endian
CPUs, it's completely broken on big-endian. e.g. following snippet would
fail:

	const x = 0xFFFFFFFF'u32
	const y = (x shr 1)
	echo y # amd64: 2147483647, s390x: 0

That in turn broke float printing, resulting in miscompilation of any
code that used floats.

To fix this, we now call the aptly named castToUInt64 procedure which
performs the same cast portably.

(Thanks to barracuda156 for helping debug this.)
2025-12-30 23:09:01 +01:00
..
ic
IC: code generation progress (#25379)
2025-12-29 00:20:33 +01:00
plugins
massive refactoring for IC (#25282)
2025-11-13 21:31:24 +01:00
aliasanalysis.nim
use strictdefs for compiler (#22365)
2023-08-06 14:26:21 +02:00
aliases.nim
type refactor: part 4 (#23077)
2023-12-15 10:20:57 +01:00
ast2nif.nim
IC: code generation progress (#25379)
2025-12-29 00:20:33 +01:00
ast.nim
refactoring for IC (#25395)
2025-12-29 13:52:22 +01:00
astalgo.nim
IC: progress (#25314)
2025-12-01 22:59:12 +01:00
astdef.nim
IC: keep package information (#25350)
2025-12-18 09:34:39 +01:00
astmsgs.nim
fixes #23494; Wrong type in object construction error message (#23504)
2024-04-16 12:46:59 +02:00
astyaml.nim
refactor: The popular 'r' field is now named 'snippet' (#23829)
2024-07-12 15:23:09 +02:00
bitsets.nim
NIR: Nim intermediate representation (#22777)
2023-10-11 17:44:14 +02:00
btrees.nim
use strictdefs for compiler (#22365)
2023-08-06 14:26:21 +02:00
cbuilderbase.nim
fixes nightlies failures (#24456)
2024-11-19 08:51:54 +01:00
cbuilderdecls.nim
fix #pragma pack generation regression in packed case objects (#24461)
2024-11-21 14:29:18 +03:00
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
IC: progress (#25344)
2025-12-11 18:22:38 +01:00
ccgexprs.nim
fixes #19983; implements bitmasked bitshifting for all backends (#25390)
2025-12-29 10:25:56 +01:00
ccgliterals.nim
IC: progress (#25339)
2025-12-07 13:07:44 +01:00
ccgmerge_unused.nim
removed unused sections in codegen (#20976)
2022-11-30 21:51:13 +01:00
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
refactoring (#25394)
2025-12-29 10:23:46 +01:00
ccgutils.nim
implements internal sink copy (#24747)
2025-03-10 11:20:44 +01:00
cgen.nim
refactoring for IC (#25395)
2025-12-29 13:52:22 +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
IC: progress (#25344)
2025-12-11 18:22:38 +01:00
cmdlinehelper.nim
fixes #23429; rework --verbosity with warnings/hints (#23441)
2024-03-28 11:04:12 +01:00
commands.nim
IC: progress (#25344)
2025-12-11 18:22:38 +01:00
compiler.nimble
Create compiler and nimsuggest packages (#22118)
2023-06-18 16:06:14 +02:00
concepts.nim
fix #17630: Implement cycle detection for recursive concepts (#25353)
2025-12-20 08:56:10 +01:00
condsyms.nim
makes DuplicateModuleImport back to an error (#25178)
2025-09-18 20:50:46 +02:00
debuginfo.nim
happy new year
2017-01-07 22:35:09 +01:00
debugutils.nim
Extend and document compiler debugging utilities (#19841)
2022-06-10 20:40:08 +02:00
depends.nim
prepare for the enforcement of std prefix (#22873)
2023-10-29 14:48:11 +01:00
deps.nim
IC: progress (#25332)
2025-12-06 11:45:01 +01:00
dfa.nim
fixes lastRead uses the when nimvm branch (#24834)
2025-04-02 09:29:15 +02:00
docgen2.nim
use strictdefs for compiler (#22365)
2023-08-06 14:26:21 +02:00
docgen.nim
IC: progress (#25344)
2025-12-11 18:22:38 +01:00
enumtostr.nim
massive refactoring for IC (#25282)
2025-11-13 21:31:24 +01:00
errorhandling.nim
IC: progress and refactorings (#22961)
2023-11-20 21:12:13 +01:00
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
remove fauxMatch for tyFromExpr, remove tyProxy and tyUnknown aliases (#24018)
2024-08-28 20:46:36 +02:00
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
prepare for the enforcement of std prefix (#22873)
2023-10-29 14:48:11 +01:00
filters.nim
prepare for the enforcement of std prefix (#22873)
2023-10-29 14:48:11 +01:00
gorgeimpl.nim
prepare for the enforcement of std prefix (#22873)
2023-10-29 14:48:11 +01:00
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
prepare for the enforcement of std prefix (#22873)
2023-10-29 14:48:11 +01:00
importer.nim
massive refactoring for IC (#25282)
2025-11-13 21:31:24 +01:00
index.nim
walkDirRecFilter, update doc CI filter, compiler/index.nim for docs + various other fixes (#14501)
2020-06-01 19:21:41 +02:00
injectdestructors.nim
fixes #25369 (#25370)
2025-12-18 18:54:03 +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
fixes yet another strictdefs bug (#23069)
2023-12-15 08:13:25 +01:00
isolation_check.nim
docs: fix typos (#24573)
2024-12-27 19:42:18 +01:00
jsgen.nim
fixes #19983; implements bitmasked bitshifting for all backends (#25390)
2025-12-29 10:25:56 +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
bring back id table algorithm instead of std table [backport:2.2] (#24930)
2025-05-06 09:36:20 +02:00
layouter.nim
nimpretty: check the rendered AST for wrong output (#23057)
2023-12-13 10:39:10 +01:00
lexer.nim
fixes yet another strictdefs bug (#23069)
2023-12-15 08:13:25 +01:00
liftdestructors.nim
IC: progress (#25344)
2025-12-11 18:22:38 +01:00
liftlocals.nim
IC: progress (#25344)
2025-12-11 18:22:38 +01:00
lineinfos.nim
IC: progress (#25332)
2025-12-06 11:45:01 +01:00
linter.nim
make linter use lineinfo to check originating package (#24270)
2024-10-11 12:00:05 +02:00
llstream.nim
repl: support eof, define object with fields (#24784)
2025-03-25 07:41:17 +01:00
lookups.nim
massive refactoring for IC (#25282)
2025-11-13 21:31:24 +01:00
lowerings.nim
IC: progress (#25344)
2025-12-11 18:22:38 +01:00
macrocacheimpl.nim
IC: next steps (#16632)
2021-01-12 09:36:51 +01:00
magicsys.nim
IC: progress (#25344)
2025-12-11 18:22:38 +01:00
main.nim
IC: progress (#25339)
2025-12-07 13:07:44 +01:00
mangleutils.nim
apply the new mangle algorithm to JS backend for parameters and procs (#23476)
2024-04-05 08:54:48 +02:00
modulegraphs.nim
IC: code generation progress (#25379)
2025-12-29 00:20:33 +01:00
modulepaths.nim
make mangled module names shorter (#24976)
2025-06-05 08:34:52 +02:00
modules.nim
massive refactoring for IC (#25282)
2025-11-13 21:31:24 +01:00
msgs.nim
IC: progress (#25368)
2025-12-20 11:27:46 +01:00
nifbackend.nim
refactoring for IC (#25395)
2025-12-29 13:52:22 +01:00
nifgen.nim
fixes #25007; implements setLenUninit for refc (#25022)
2025-07-14 23:19:58 +02:00
nilcheck.nim
IC: progress (#25344)
2025-12-11 18:22:38 +01:00
nim.cfg
makes DuplicateModuleImport back to an error (#25178)
2025-09-18 20:50:46 +02:00
nim.nim
IC: progress (#25339)
2025-12-07 13:07:44 +01:00
nimblecmd.nim
fixes yet another strictdefs bug (#23069)
2023-12-15 08:13:25 +01:00
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
prepare for the enforcement of std prefix (#22873)
2023-10-29 14:48:11 +01:00
nimpaths.nim
prepare for the enforcement of std prefix (#22873)
2023-10-29 14:48:11 +01:00
nimsets.nim
IC: progress (#25344)
2025-12-11 18:22:38 +01:00
nodejs.nim
prepare for the enforcement of std prefix (#22873)
2023-10-29 14:48:11 +01:00
nodekinds.nim
opensym as node kind + fixed experimental switch (#23892)
2024-08-12 15:33:26 +02:00
nversion.nim
warn on set types bigger than max size, default to 0..255 for int literals (#21659)
2023-04-17 20:55:22 +02:00
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
IC: code generation progress (#25379)
2025-12-29 00:20:33 +01:00
packagehandling.nim
use strictdefs for compiler (#22365)
2023-08-06 14:26:21 +02:00
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
test removing dollar for objects out of system (#20242)
2022-08-24 09:44:16 +02:00
passes.nim
massive refactoring for IC (#25282)
2025-11-13 21:31:24 +01:00
pathutils.nim
prepare for the enforcement of std prefix (#22873)
2023-10-29 14:48:11 +01:00
patterns.nim
clean up opensym encounters in compiler (#24866)
2025-04-12 08:39:11 +02:00
pipelines.nim
IC: code generation progress (#25379)
2025-12-29 00:20:33 +01:00
pipelineutils.nim
replaces implicit passes array registed at runtime with explicit function calls; simplify compilation pipeline (#21444)
2023-03-03 07:36:38 +01:00
platform.nim
fixes nightlies due to UB errors; increase maxCPU hard limits (#25219)
2025-10-13 13:47:06 +02:00
pluginsupport.nim
refactoring: fewer global variables
2018-05-27 19:19:12 +02:00
pragmas.nim
IC: progress (#25344)
2025-12-11 18:22:38 +01:00
prefixmatches.nim
prepare for the enforcement of std prefix (#22873)
2023-10-29 14:48:11 +01:00
procfind.nim
fixes addr/hiddenAddr in strictdefs (#23477)
2024-04-10 14:41:16 +02:00
pushpoppragmas.nim
fixes push warnings for sempass2 (#23603)
2024-09-03 09:19:52 +02:00
readme.md
clean up the documentation (#22196)
2023-07-02 22:36:05 +02:00
renderer.nim
IC: code generation progress (#25379)
2025-12-29 00:20:33 +01:00
renderverbatim.nim
prepare for the enforcement of std prefix (#22873)
2023-10-29 14:48:11 +01:00
reorder.nim
clean up opensym encounters in compiler (#24866)
2025-04-12 08:39:11 +02:00
rodutils.nim
NIR: C codegen additions (#22914)
2023-11-06 18:33:28 +01:00
ropes.nim
replaces doAssert false with raiseAssert for unreachable branches, which works better with strictdefs (#22436)
2023-08-10 14:26:40 +02:00
saturate.nim
fix warnings for deprecated low and high (#15291)
2020-09-11 01:04:07 +02:00
scriptconfig.nim
IC: code generation progress (#25379)
2025-12-29 00:20:33 +01:00
sem.nim
IC: progress (#25344)
2025-12-11 18:22:38 +01:00
semcall.nim
IC: progress (#25344)
2025-12-11 18:22:38 +01:00
semdata.nim
IC: progress (#25344)
2025-12-11 18:22:38 +01:00
semexprs.nim
IC: progress (#25344)
2025-12-11 18:22:38 +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
Fix tupleLen not skipping aliases (#25392)
2025-12-28 16:45:07 +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
IC: progress (#25344)
2025-12-11 18:22:38 +01:00
semstmts.nim
refactoring for IC (#25395)
2025-12-29 13:52:22 +01:00
semstrictfuncs.nim
alternative, much simpler algorithm for strict func checking (#21066)
2022-12-11 16:58:50 +01:00
semtempl.nim
IC: progress (#25344)
2025-12-11 18:22:38 +01:00
semtypes.nim
IC: progress (#25344)
2025-12-11 18:22:38 +01:00
semtypinst.nim
Refactoring #25302; don't store procedure's parameter types to PType.sonsImpl (#25351)
2025-12-26 21:59:38 +01:00
sighashes.nim
refactoring (#25394)
2025-12-29 10:23:46 +01:00
sigmatch.nim
Refactoring #25302; don't store procedure's parameter types to PType.sonsImpl (#25351)
2025-12-26 21:59:38 +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
chore: fix some typos (#23412)
2024-03-16 08:35:18 +08:00
spawn.nim
IC: progress (#25344)
2025-12-11 18:22:38 +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
fixes addr/hiddenAddr in strictdefs (#23477)
2024-04-10 14:41:16 +02:00
tccgen.nim
replaces doAssert false with raiseAssert for unreachable branches, which works better with strictdefs (#22436)
2023-08-10 14:26:40 +02:00
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
Align treetab hash with equivalence (#25354)
2025-12-15 13:19:56 +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
IC: progress (#25344)
2025-12-11 18:22:38 +01:00
typesrenderer.nim
prepare for the enforcement of std prefix (#22873)
2023-10-29 14:48:11 +01:00
varpartitions.nim
massive refactoring for IC (#25282)
2025-11-13 21:31:24 +01:00
vm.nim
fixes #25254; fixes #10395; Invalid pred in when swallowed (#25385)
2025-12-25 00:04:18 +01:00
vmconv.nim
Types: Refactorings; step 1 (#23055)
2023-12-12 16:54:50 +01:00
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 #19983; implements bitmasked bitshifting for all backends (#25390)
2025-12-29 10:25:56 +01:00
vmhooks.nim
replaces doAssert false with raiseAssert for unreachable branches, which works better with strictdefs (#22436)
2023-08-10 14:26:40 +02:00
vmmarshal.nim
fixes addr/hiddenAddr in strictdefs (#23477)
2024-04-10 14:41:16 +02:00
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: progress (#25344)
2025-12-11 18:22:38 +01:00
wordrecg.nim
Asm syntax pragma (#23119)
2023-12-25 07:12:54 +01:00

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.