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2d1412a2eae9abc7c5827fac5bf028f71599790a
Nim/compiler
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ringabout 2d1412a2ea fixes #26015; Multiple definition error when using codegenDecl regression (#26018) 
fixes #26015

Fixes imported global variables with codegenDecl being emitted as
definitions instead of extern declarations.

A variable’s codegenDecl format should customize its definition in the
owning module. Other modules referencing the variable must emit a normal
declaration:

```c
extern NI variable;
```

After the variable-declaration builder refactor, genVarPrototype passed
Extern visibility to addVar. However, the sfCodegenDecl branch returned
before applying that visibility. This caused importing modules to emit
another tentative definition, resulting in duplicate-symbol linker
errors.

The fix restores the previous distinction between the custom definition
and cross-module prototypes. It also adds C and C++ regression coverage
for both direct access and access through an inline procedure.

follows up https://github.com/nim-lang/Nim/pull/24423
2026-08-23 12:37:15 +02:00
..
ic
IC related bugfixes (#25946)
2026-07-03 15:52:41 +02:00
plugins
massive refactoring for IC (#25282)
2025-11-13 21:31:24 +01:00
aliasanalysis.nim
fixes #26123; Update PathKinds1 to include nkCast (#26126)
2026-08-21 21:57:51 +08:00
aliases.nim
fix #26112: update variable kinds in isPartOf to include skResult (#26114)
2026-08-17 23:37:46 +02:00
ast2nif.nim
IC: Do not serialize nfHasComment to nif (#26127)
2026-08-20 18:11:31 +02:00
ast.nim
Miscellaneous frontend optimizations (#26090)
2026-08-08 23:28:22 +02:00
astalgo.nim
Miscellaneous frontend optimizations (#26090)
2026-08-08 23:28:22 +02:00
astdef.nim
Same-module generic cache for lazy instantiation (#26091)
2026-08-10 10:18:15 +02:00
astmsgs.nim
fixes #23494; Wrong type in object construction error message (#23504)
2024-04-16 12:46:59 +02:00
astyaml.nim
astyaml: formatting fixes (#25897)
2026-06-11 14:10:42 +02:00
bitsets.nim
NIR: Nim intermediate representation (#22777)
2023-10-11 17:44:14 +02:00
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
backend: refactorings so that eventually it can run on BIF directly w… (#25959)
2026-08-04 15:18:34 +02:00
ccgexprs.nim
rm some cruft (#26113)
2026-08-17 15:02:49 +02:00
ccgliterals.nim
rm some cruft (#26113)
2026-08-17 15:02:49 +02:00
ccgmerge_unused.nim
removed unused sections in codegen (#20976)
2022-11-30 21:51:13 +01:00
ccgreset.nim
fixes #25992; fix GC tracing of stale bytes in case objects during reset (#26003)
2026-08-15 07:51:13 +02:00
ccgstmts.nim
rm some cruft (#26113)
2026-08-17 15:02:49 +02:00
ccgthreadvars.nim
IC refactor (#25927)
2026-06-25 23:20:34 +02:00
ccgtrav.nim
cbuilder: use constants for type names, some cleanups (#24438)
2024-11-18 17:34:37 +01:00
ccgtypes.nim
rm some cruft (#26113)
2026-08-17 15:02:49 +02:00
ccgutils.nim
IC: move to BIF / nifcore APIs (#25943)
2026-06-29 18:24:49 +02:00
cgen.nim
fixes #26015; Multiple definition error when using codegenDecl regression (#26018)
2026-08-23 12:37:15 +02:00
cgendata.nim
IC: progress (#25879)
2026-06-14 22:35:06 +02:00
cgmeth.nim
IC refactor (#25927)
2026-06-25 23:20:34 +02:00
closureiters.nim
fix: exception leak in closure iterator typed except branches (#23615) (#26034)
2026-07-24 14:06:27 +02:00
cmdlinehelper.nim
use IC for nimsuggest (#25915)
2026-06-24 21:58:51 +02:00
cnif.nim
IC: progress (#25879)
2026-06-14 22:35:06 +02:00
commands.nim
deprecate hotCodeReloading (#26107)
2026-08-15 07:45:58 +02:00
compiler.nimble
Create compiler and nimsuggest packages (#22118)
2023-06-18 16:06:14 +02:00
concepts.nim
rm some cruft (#26113)
2026-08-17 15:02:49 +02:00
condsyms.nim
fixes #24706; Warn on implicit range downsizing (#25451)
2026-02-01 17:06:33 +01:00
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
nim-track: make include files work (#25977)
2026-07-09 22:13:39 +02:00
dfa.nim
fixes #26123; Update PathKinds1 to include nkCast (#26126)
2026-08-21 21:57:51 +08:00
docgen2.nim
rm some cruft (#26113)
2026-08-17 15:02:49 +02:00
docgen.nim
rm some cruft (#26113)
2026-08-17 15:02:49 +02:00
enumtostr.nim
rm genCaseObjDiscMapping (#26097)
2026-08-15 07:48:58 +02:00
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
fixes #22791; ProveField warning with nested case object (#25774)
2026-05-27 23:29:27 +02:00
hlo.nim
Fixes #25304 proper test for hlo recursion limit (#25305)
2025-11-21 21:26:43 +01:00
icconfig.nim
nim-track: make include files work (#25977)
2026-07-09 22:13:39 +02:00
icmodnames.nim
IC related bugfixes (#25946)
2026-07-03 15:52:41 +02:00
icnifcore.nim
IC: final tweaks (#25958)
2026-07-04 10:13:39 +02:00
idents.nim
prepare for the enforcement of std prefix (#22873)
2023-10-29 14:48:11 +01:00
idetools.nim
nim-track: make include files work (#25977)
2026-07-09 22:13:39 +02:00
importer.nim
fix: implicit imports drop std/ prefix (#25780)
2026-05-08 06:50:13 +02:00
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
rm some cruft (#26113)
2026-08-17 15:02:49 +02:00
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
rm some cruft (#26113)
2026-08-17 15:02:49 +02:00
isolation_check.nim
docs: fix typos (#24573)
2024-12-27 19:42:18 +01:00
itemids.nim
IC: progress (#25879)
2026-06-14 22:35:06 +02:00
jsgen.nim
rm some cruft (#26113)
2026-08-17 15:02:49 +02:00
jstypes.nim
fixes #25043: js tyUserTypeClass internal error (#25044)
2025-07-14 23:15:44 +02:00
lambdalifting.nim
rm some cruft (#26113)
2026-08-17 15:02:49 +02:00
layeredtable.nim
Same-module generic cache for lazy instantiation (#26091)
2026-08-10 10:18:15 +02:00
layouter.nim
fix #20078: nimpretty --indent applies to keepIndents regions (#25985)
2026-08-03 12:15:44 +02:00
lexer.nim
rm some cruft (#26113)
2026-08-17 15:02:49 +02:00
liftdestructors.nim
rm some cruft (#26113)
2026-08-17 15:02:49 +02:00
liftlocals.nim
IC: progress (#25344)
2025-12-11 18:22:38 +01:00
lineinfos.nim
fixes-25655; defining >= operator generates compile error (#25787)
2026-06-08 09:00:00 +02:00
linter.nim
fixes #19831; add --styleCheck:warning (#25456)
2026-01-23 22:50:00 +01:00
llstream.nim
SSO for strings (#25593)
2026-04-02 07:19:43 +02:00
lookups.nim
IC: progress (#25879)
2026-06-14 22:35:06 +02:00
lowerings.nim
IC refactor (#25927)
2026-06-25 23:20:34 +02:00
macrocacheimpl.nim
IC: next steps (#16632)
2021-01-12 09:36:51 +01:00
magicsys.nim
fix compiler crash with uncheckedAssign and range/distinct discrims [backport] (#25585)
2026-03-07 07:39:57 +01:00
main.nim
rm some cruft (#26113)
2026-08-17 15:02:49 +02:00
mangleutils.nim
IC: move to BIF / nifcore APIs (#25943)
2026-06-29 18:24:49 +02:00
modulegraphs.nim
rm some cruft (#26113)
2026-08-17 15:02:49 +02:00
modulepaths.nim
IC: progress (#25420)
2026-01-09 13:10:04 +01:00
modules.nim
IC: progress (#25879)
2026-06-14 22:35:06 +02:00
msgs.nim
rm some cruft (#26113)
2026-08-17 15:02:49 +02:00
nifbackend.nim
IC related bugfixes (#25946)
2026-07-03 15:52:41 +02:00
nifgen.nim
IC related bugfixes (#25946)
2026-07-03 15:52:41 +02:00
nilcheck.nim
fixes-25655; defining >= operator generates compile error (#25787)
2026-06-08 09:00:00 +02:00
nim.cfg
IC: move to BIF / nifcore APIs (#25943)
2026-06-29 18:24:49 +02:00
nim.nim
nim track: oneshot nimsuggest (#25971)
2026-07-08 15:39:40 +02:00
nimblecmd.nim
fixes yet another strictdefs bug (#23069)
2023-12-15 08:13:25 +01:00
nimconf.nim
use IC for nimsuggest (#25915)
2026-06-24 21:58:51 +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
add --genBif for semantic BIF output on non-IC builds (#26001)
2026-07-20 13:01:30 +02:00
packagehandling.nim
use strictdefs for compiler (#22365)
2023-08-06 14:26:21 +02:00
packages.nim
rm some cruft (#26113)
2026-08-17 15:02:49 +02:00
parampatterns.nim
fixes #23949; cannot return lent expression from conditionals like case (#25190)
2025-09-24 06:29:57 +02:00
parser.nim
IC: progress (#25879)
2026-06-14 22:35:06 +02:00
passaux.nim
test removing dollar for objects out of system (#20242)
2022-08-24 09:44:16 +02:00
passes.nim
IC: massive cleanup, NIF26 support, docs about its inner workings (#25427)
2026-01-16 12:19:17 +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
add --genBif for semantic BIF output on non-IC builds (#26001)
2026-07-20 13:01:30 +02:00
pipelineutils.nim
rm some cruft (#26113)
2026-08-17 15:02:49 +02:00
platform.nim
adds wasm64 (Memory64) as a first-class target (#25900)
2026-06-11 23:49:50 +02:00
pluginsupport.nim
refactoring: fewer global variables
2018-05-27 19:19:12 +02:00
pragmas.nim
Yrc typos and omissions (#25500)
2026-02-10 13:21:35 +01:00
prefixmatches.nim
prepare for the enforcement of std prefix (#22873)
2023-10-29 14:48:11 +01:00
procfind.nim
rm some cruft (#26113)
2026-08-17 15:02:49 +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
rm some cruft (#26113)
2026-08-17 15:02:49 +02:00
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
rm some cruft (#26113)
2026-08-17 15:02:49 +02:00
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
YRC: threadsafe cycle collection for Nim (#25495)
2026-02-10 00:04:11 +01:00
sem.nim
rm some cruft (#26113)
2026-08-17 15:02:49 +02:00
semcall.nim
rm some cruft (#26113)
2026-08-17 15:02:49 +02:00
semdata.nim
fixes #26025 (#26076)
2026-08-11 22:27:49 +02:00
semexprs.nim
fixes #26123; Update PathKinds1 to include nkCast (#26126)
2026-08-21 21:57:51 +08:00
semfields.nim
IC: progress (#25344)
2025-12-11 18:22:38 +01:00
semfold.nim
rm some cruft (#26113)
2026-08-17 15:02:49 +02:00
semgnrc.nim
rm some cruft (#26113)
2026-08-17 15:02:49 +02:00
seminst.nim
Same-module generic cache for lazy instantiation (#26091)
2026-08-10 10:18:15 +02:00
semmacrosanity.nim
IC: progress (#25344)
2025-12-11 18:22:38 +01:00
semmagic.nim
fixes #26010; Double destroy with {.cursor.} (#26031)
2026-07-24 14:07:15 +02:00
semobjconstr.nim
rm some cruft (#26113)
2026-08-17 15:02:49 +02:00
semparallel.nim
IC: progress (#25344)
2025-12-11 18:22:38 +01:00
sempass2.nim
rm some cruft (#26113)
2026-08-17 15:02:49 +02:00
semstmts.nim
rm some cruft (#26113)
2026-08-17 15:02:49 +02:00
semstrictfuncs.nim
alternative, much simpler algorithm for strict func checking (#21066)
2022-12-11 16:58:50 +01:00
semtempl.nim
rm some cruft (#26113)
2026-08-17 15:02:49 +02:00
semtypes.nim
rm some cruft (#26113)
2026-08-17 15:02:49 +02:00
semtypinst.nim
rm some cruft (#26113)
2026-08-17 15:02:49 +02:00
sighashes.nim
Fix #25883 tuple sighash collision (#25889)
2026-07-09 15:47:58 +02:00
sigmatch.nim
rm some cruft (#26113)
2026-08-17 15:02:49 +02:00
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
fixes #25885; incompleteStruct ignored without importc (#25898)
2026-06-13 10:17:44 +02:00
sourcemap.nim
rm some cruft (#26113)
2026-08-17 15:02:49 +02:00
spawn.nim
rm some cruft (#26113)
2026-08-17 15:02:49 +02:00
suggest.nim
use IC for nimsuggest (#25915)
2026-06-24 21:58:51 +02:00
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 refactor (#25927)
2026-06-25 23:20:34 +02:00
trees.nim
fixes #26010; Double destroy with {.cursor.} (#26031)
2026-07-24 14:07:15 +02:00
treetab.nim
reduce imports (#25398)
2025-12-31 13:33:57 +01:00
typeallowed.nim
fixes #25677; fixes #25678; typeAllowedAux to improve flag handling (#25684)
2026-03-30 15:09:11 +02:00
typekeys.nim
IC: final tweaks (#25958)
2026-07-04 10:13:39 +02:00
types.nim
rm some cruft (#26113)
2026-08-17 15:02:49 +02:00
typesrenderer.nim
prepare for the enforcement of std prefix (#22873)
2023-10-29 14:48:11 +01:00
varpartitions.nim
fixes #26023; incorrect sink requires a copy (#26028)
2026-08-03 12:02:29 +02:00
vm.nim
rm some cruft (#26113)
2026-08-17 15:02:49 +02:00
vmconv.nim
Types: Refactorings; step 1 (#23055)
2023-12-12 16:54:50 +01:00
vmdef.nim
fixes #18367 and #21222; using quote inside static block (#25907)
2026-06-13 07:04:17 +02:00
vmdeps.nim
Fix getTypeImpl not returning defaults (#25592)
2026-03-09 11:59:12 +01:00
vmgen.nim
rm some cruft (#26113)
2026-08-17 15:02:49 +02:00
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
rm some cruft (#26113)
2026-08-17 15:02:49 +02:00
vmprofiler.nim
rm some cruft (#26113)
2026-08-17 15:02:49 +02:00
vtables.nim
rm some cruft (#26113)
2026-08-17 15:02:49 +02:00
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.