Version 1.2.0 released
03 April 2020 The Nim Team
We are very proud to announce Nim version 1.2 after six months of continuous development!
This release contains around 600 new commits which have not already been backported to our 1.0.x versions. There are several new features and standard library additions compared to 1.0. We tried to keep breaking changes to a minimum, but some bugfixes weren’t possible without making those necessary changes, and we feel that our users will benefit from them.
We would recommend to all of our users to upgrade and use version 1.2.
Using multiple Nim versions
useVersion
If you would like to upgrade to version v1.2, but you are relying on v1.0 behaviour,
there is a command line switch --useVersion
, which you can use with the newest
Nim to simulate previous versions.
For example, Nim v1.2 is more strict about type conversions concerning proc
types.
If this breaks your code, pass --useVersion:1.0
, which will emulate the old
behaviour.
This is not limited to the above example.
If you were relying on some edge case and/or buggy behaviour which is now fixed,
try if --useVersion:1.0
gives you back the results you expect to see.
If that doesn’t work and you need the old behaviour, please open an issue in
our bug tracker and we will try to
make it work in future bugfix releases (1.2.x).
when declared
If you are library author and you would like your library to be available both
for v1.0 and v1.2 users, but you are relying on some new features introduced in
v1.2 which are not available in v1.0 release, you can use when declared
to
your advantage.
For example, sequtils
module now has the unzip
proc.
You can write your code like this:
import sequtils
when not declared(unzip):
proc unzip*[S, T](s: openArray[(S, T)]): (seq[S], seq[T]) =
result[0] = newSeq[S](s.len)
result[1] = newSeq[T](s.len)
for i in 0..<s.len:
result[0][i] = s[i][0]
result[1][i] = s[i][1]
let a = @[('a', 1), ('b', 2), ('c', 3)]
let b = unzip(a) # version 1.0 will use the proc declared above
# version 1.2 will use sequtils' proc
assert b == (@['a', 'b', 'c'], @[1, 2, 3])
Installing Nim 1.2
New users
Check out if the package manager of your OS already ships version 1.2 or install it as described here.
Existing users
If you have installed a previous version of Nim using choosenim
,
getting Nim 1.2 is as easy as:
$ choosenim update stable
Contributors to v1.2
Our contributors are amazing, and there is far too many to list here. Big thanks to all of you, we couldn’t have pulled off this release without you!
New features
GC: ARC
--gc:arc
is our main new feature for this release!
Instead of going into lots of details and hijacking this release article, we would like to point you to this video from FOSDEM where Araq explains details behind ARC and shows some benchmarks which show the benefits of it.
A more detailed article about ARC might follow in the future.
New sugar macros
Version 1.2.0 introduces several new macros which should help with writing some common tasks.
In the next few sections we will show them and their usages.
All the examples imply import sugar
.
Collect
collect
is a macro which helps with writing seq/set/table comprehensions.
It replaces the lc
(list comprehension), and it is both more idiomatic and
more powerful than lc
.
There is no overhead for using collect
, e.g. you can use newSeqOfCap
with it.
The syntax for all collections is similar, with the difference being the
init
function and the last expression.
Examples:
let numbers = collect(newSeq): # or: collect(newSeqOfCap(10))
for i in 1..10:
i
assert numbers == @[1, 2, 3, 4, 5, 6, 7, 8, 9, 10]
import tables
let oddSquares = collect(initTable):
for i in numbers:
if i mod 2 == 1:
{i: i * i}
assert len(oddSquares) == 5
assert oddSquares[7] == 49
import sets
let oddOrNegative = collect(initHashSet):
for i in numbers:
{if i mod 2 == 1: i else: -i}
assert 5 in oddOrNegative
assert 2 notin oddOrNegative
assert -2 in oddOrNegative
Dup
dup
is a macro which turns an in-place function into one that returns a
result without modifying its input.
The idea is that future versions of Nim will offer only in-place versions
of the functions (i.e. no more sort
and sorted
, rotateLeft
and
rotatedLeft
, and so on), which could be transformed to functions returning
a copy via dup
.
This macro also allows for (otherwise in-place) function chaining.
Examples:
proc makePalindrome(s: var string) =
for i in countdown(s.len-2, 0):
s.add(s[i])
var a = "abc"
makePalindrome(a)
assert a == "abcba"
var b = "xyz"
var c = b.dup(makePalindrome)
assert b == "xyz"
assert c == "xyzyx"
An underscore (_
) can be used to denote the place of the argument you’re
passing:
import algorithm
# b = "xyz"
var d = dup b:
makePalindrome # xyzyx
sort(_, SortOrder.Descending) # zyyxx
makePalindrome # zyyxxxyyz
assert d == "zyyxxxyyz"
Capture
capture
is a macro which is useful when creating a closure in a loop to capture
some local loop variables by their current iteration values.
You might want to use it for example for event handling and {int: callBack}
lookup tables.
Example:
import strformat, sugar
var myClosure: proc(): string
for i in 5..7:
for j in 7..9:
if i * j == 42:
capture i, j:
myClosure = proc (): string = fmt"{i} * {j} = 42"
let a = myClosure()
assert a == "6 * 7 = 42"
Changelog
Standard library additions and changes
- Added overloaded
strformat.fmt
macro that use specified characters as delimiter instead of ‘{‘ and ‘}’. - Added new procs in
tables.nim
:OrderedTable.pop
,CountTable.del
,CountTable.pop
,Table.pop
. - Added
strtabs.clear
overload that reuses the existing mode. - Added
browsers.osOpen
const alias for the operating system specific “open” command. - Added
sugar.dup
for turning in-place algorithms likesort
andshuffle
into operations that work on a copy of the data and return the mutated copy, like the existingsorted
does. - Added
sugar.collect
that does comprehension for seq/set/table collections. - Added
sugar.capture
for capturing some local loop variables when creating a closure. This is an enhanced version ofclosureScope
. - Added
typetraits.tupleLen
to get number of elements of a tuple/type tuple, andtypetraits.get
to get the ith element of a type tuple. - Added
typetraits.genericParams
to return a tuple of generic params from a generic instantiation. options
now treatsproc
like other pointer types, meaningnil
proc variables are converted toNone
.- Added
os.normalizePathEnd
for additional path sanitization. - Added
times.fromUnixFloat,toUnixFloat
, sub-second resolution versions offromUnix
,toUnixFloat
. - Added
wrapnils
module for chains of field-access and indexing where the LHS can be nil. This simplifies code by reducing need for if-else branches around intermediate maybe nil values. E.g.echo ?.n.typ.kind
. - Added
minIndex
,maxIndex
andunzip
to thesequtils
module. - Added
os.isRelativeTo
to tell whether a path is relative to another. - Added
resetOutputFormatters
tounittest
. - Added
expectIdent
to themacros
module. - Added
os.isValidFilename
that returnstrue
iffilename
argument is valid for cross-platform use. - Added
times.isLeapDay
. base64
adds URL-Safe Base64, implements RFC-4648 Section-7.- Added a new module,
std / compilesettings
for querying the compiler about diverse configuration settings. - Added
net.getPeerCertificates
andasyncnet.getPeerCertificates
for retrieving the verified certificate chain of the peer we are connected to through an SSL-wrappedSocket
/AsyncSocket
. - Added
browsers.openDefaultBrowser
without URL, implements IETF RFC-6694 Section-3. - Added
jsconsole.trace
,jsconsole.table
,jsconsole.exception
for JavaScript target. - Added
distinctBase
overload for values:assert 12.MyInt.distinctBase == 12
- Added new module
std/stackframes
, in particularsetFrameMsg
, which enables custom runtime annotation of stackframes, see #13351 for examples. Turn on/off via--stackTraceMsgs:on/off
. - Added
sequtils.countIt
, allowing for counting items using a predicate. - Added a
with
macro for easy function chaining that’s available everywhere, there is no need to concern your APIs with returning the first argument to enable “chaining”, instead use the dedicated macrowith
that was designed for it. For example:
import std/with
type
Foo = object
col, pos: string
proc setColor(f: var Foo; r, g, b: int) = f.col = $(r, g, b)
proc setPosition(f: var Foo; x, y: float) = f.pos = $(x, y)
var f: Foo
with(f, setColor(2, 3, 4), setPosition(0.0, 1.0))
echo f
macros.newLit
now works for ref object types.macro pragmas
can now be used in type sections.- 5 new pragmas were added to Nim in order to make the upcoming tooling more
convenient to use. Nim compiler checks these pragmas for syntax but otherwise
ignores them. The pragmas are
requires
,ensures
,assume
,assert
,invariant
. system.writeFile
has been overloaded to also supportopenarray[byte]
.asyncdispatch.drain
now properly takes into accountselector.hasPendingOperations
and only returns once all pending async operations are guaranteed to have completed.sequtils.zip
now returns a sequence of anonymous tuples i.e. those tuples now do not have fields named “a” and “b”.distinctBase
has been moved fromsugar
totypetraits
and now it is implemented as compiler type trait instead of macro.distinctBase
in sugar module is now deprecated.CountTable.mget
has been removed fromtables.nim
. It didn’t work, and it was an oversight to be included in v1.0.tables.merge(CountTable, CountTable): CountTable
has been removed. It didn’t work well together with the existing inplace version of the same proc (tables.merge(var CountTable, CountTable)
). It was an oversight to be included in v1.0.asyncdispatch.drain
now consistently uses the passed timeout value for all iterations of the event loop, and not just the first iteration. This is more consistent with the other asyncdispatch APIs, and allowsasyncdispatch.drain
to be more efficient.base64.encode
andbase64.decode
were made faster by about 50%.htmlgen
adds MathML support (ISO 40314).macros.eqIdent
is now invariant to export markers and backtick quotes.htmlgen.html
allowslang
in the<html>
tag and common valid attributes.macros.basename
andbasename=
got support forPragmaExpr
, so that an expression likeMyEnum {.pure.}
is handled correctly.httpclient.maxredirects
changed fromint
toNatural
, because negative values serve no purpose whatsoever.httpclient.newHttpClient
andhttpclient.newAsyncHttpClient
addedheaders
argument to set initial HTTP Headers, instead of a hardcoded emptynewHttpHeader()
.parseutils.parseUntil
has now a different behaviour if theuntil
parameter is empty. This was required for intuitive behaviour of the strscans module (see bug #13605).strutils.formatFloat
withprecision = 0
has the same behavior in all backends, and it is compatible with Python’s behavior, e.g.formatFloat(3.14159, precision = 0)
is now3
, not3.
.times.parse
now only uses input to compute its result, and notnow
:parse("2020", "YYYY", utc())
is now2020-01-01T00:00:00Z
instead of2020-03-02T00:00:00Z
if run on 03-02; it also doesn’t crash anymore when used on 29th, 30th, 31st of each month.httpcore.==(string, HttpCode)
is now deprecated due to lack of practical usage. The$
operator can be used to obtain the string form ofHttpCode
for comparison if desired.std/oswalkdir
was buggy, it’s now deprecated and reusesstd/os
procs.os.walkDir
andos.walkDirRec
now have new flag,checkDir
(default: false). If it is set to true, it will throw if input dir is invalid instead of a noop (which is the default behaviour, as it was before this change),os.walkDirRec
only throws if top-level dir is invalid, but ignores errors for subdirs, otherwise it would be impossible to resume iteration.- The
FD
variant ofselector.unregister
forioselector_epoll
andioselector_select
now properly handle theEvent.User
select event type. joinPath
path normalization when/
is the first argument works correctly:assert "/" / "/a" == "/a"
. Fixed the edge case:assert "" / "" == ""
.xmltree
now adds indentation consistently to child nodes for any number of children nodes.os.splitPath()
behavior synchronized withos.splitFile()
to return “/” as the dir component of/root_sub_dir
instead of the empty string.- The deprecated
lc
macro has been removed fromsugar
. It is now replaced with the more powerfulcollect
macro. os.relativePath("foo", "foo")
is now"."
, not""
, as""
means invalid path and shouldn’t be conflated with"."
; use-d:nimOldRelativePathBehavior
to restore the old behavior.os.joinPath(a, b)
now honors trailing slashes inb
(ora
ifb
= “”).base64.encode
no longer supportslineLen
andnewLine
. Usebase64.encodeMime
instead.
Breaking changes
net.newContext
now performs SSL Certificate checking on Linux and OSX. DefinenimDisableCertificateValidation
to disable it globally.
Language changes
- An
align
pragma can now be used for variables and object fields, similar to thealignas
declaration modifier in C/C++. - The
=sink
type bound operator is now optional. The compiler can now use a combination of=destroy
andcopyMem
to move objects efficiently. - Unsigned integer operators have been fixed to allow promotion of the first operand.
- Conversions to unsigned integers are unchecked at runtime, imitating earlier Nim versions. The documentation was improved to acknowledge this special case. See https://github.com/nim-lang/RFCs/issues/175 for more details.
- There is a new syntax for lvalue references:
var b {.byaddr.} = expr
enabled byimport std/decls
. var a {.foo.}: MyType = expr
now lowers tofoo(a, MyType, expr)
for non-builtin pragmas, enabling things like lvalue references (seedecls.byaddr
).
Compiler changes
- The generated JS code uses spaces, instead of mixing spaces and tabs.
- The Nim compiler now supports the
--asm
command option for easier inspection of the produced assembler code. - The Nim compiler now supports a new pragma called
.localPassc
to pass specific compiler options to the C(++) backend for the C(++) file that was produced from the current Nim module. - The compiler now inferes “sink parameters”. To disable this for a specific routine,
annotate it with
.nosinks
. To disable it for a section of code, use{.push sinkInference: off.}
…{.pop.}
. - The compiler now supports a new switch
--panics:on
that turns runtime errors likeIndexError
orOverflowError
into fatal errors that cannot be caught via Nim’stry
statement.--panics:on
can improve the runtime efficiency and code size of your program significantly. - The compiler now warns about inheriting directly from
system.Exception
as this is very bad style. You should inherit fromValueError
,IOError
,OSError
or from a different specific exception type that inherits fromCatchableError
and cannot be confused with aDefect
. - The error reporting for Nim’s effect system has been improved.
- Implicit conversions for
const
behave correctly now, meaning that code likeconst SOMECONST = 0.int; procThatTakesInt32(SOMECONST)
will be illegal now. Simply writeconst SOMECONST = 0
instead. - The
{.dynlib.}
pragma is now required for exporting symbols when making shared objects on POSIX and macOS, which make it consistent with the behavior on Windows. - The compiler is now more strict about type conversions concerning proc
types: Type conversions cannot be used to hide
.raise
effects or side effects, instead acast
must be used. With the flag--useVersion:1.0
the old behaviour is emulated. - The Nim compiler now implements a faster way to detect overflows based
on GCC’s
__builtin_sadd_overflow
family of functions. (Clang also supports these). Some versions of GCC lack this feature and unfortunately we cannot detect this case reliably. So if you get compilation errors like “undefined reference to__builtin_saddll_overflow
” compile your programs with-d:nimEmulateOverflowChecks
.
Bugfixes
- Fixed “
nimgrep --nocolor
is ignored on posix; should be instead:--nimgrep --color=[auto]|true|false
” (#7591) - Fixed “Runtime index on const array (of converted obj) causes C-compiler error” (#10514)
- Fixed “windows x86 with vcc compile error with “asmNoStackFrame”” (#12298)
- Fixed “[TODO] regression: Error: Locks requires –threads:on option” (#12330)
- Fixed “Add –cc option to –help or –fullhelp output” (#12010)
- Fixed “questionable
csize
definition insystem.nim
” (#12187) - Fixed “os.getAppFilename() returns incorrect results on OpenBSD” (#12389)
- Fixed “HashSet[uint64] slow insertion depending on values” (#11764)
- Fixed “Differences between compiling ‘classic call syntax’ vs ‘method call syntax’ .” (#12453)
- Fixed “c -d:nodejs –> SIGSEGV: Illegal storage access” (#12502)
- Fixed “Closure iterator crashes on –newruntime due to “dangling references”” (#12443)
- Fixed “No
=destroy
for elements of closure environments other than for latest devel –gc:destructors” (#12577) - Fixed “strutils:formatBiggestFloat() gives different results in JS mode” (#8242)
- Fixed “Regression (devel): the new
csize_t
definition isn’t consistently used, nor tested thoroughly…” (#12597) - Fixed “tables.take() is defined only for
Table
and missed for other table containers” (#12519) - Fixed “
pthread_key_t
errors on OpenBSD” (#12135) - Fixed “newruntime: simple seq pop at ct results in compile error” (#12644)
- Fixed “[Windows] finish.exe C:\Users<USERNAME>.nimble\bin is not in your PATH environment variable.” (#12319)
- Fixed “Error with strformat + asyncdispatch + const” (#12612)
- Fixed “MultipartData needs $” (#11863)
- Fixed “Nim stdlib style issues with –styleCheck:error” (#12687)
- Fixed “new $nimbleDir path substitution yields unexpected search paths” (#12767)
- Fixed “Regression: inlined procs now get multiple rounds of destructor injection” (#12766)
- Fixed “newruntime: compiler generates defective code” (#12669)
- Fixed “broken windows modules path handling because of ‘os.relativePath’ breaking changes” (#12734)
- Fixed “for loop tuple syntax not rendered correctly” (#12740)
- Fixed “Crash when trying to use
type.name[0]
” (#12804) - Fixed “Enums should be considered Trivial types in Atomics” (#12812)
- Fixed “Produce static/const initializations for variables when possible” (#12216)
- Fixed “Assigning descriminator field leads to internal assert with –gc:destructors” (#12821)
- Fixed “nimsuggest
use
command does not return all instances of symbol” (#12832) - Fixed “@[] is a problem for –gc:destructors” (#12820)
- Fixed “Codegen ICE in allPathsAsgnResult” (#12827)
- Fixed “seq[Object with ref and destructor type] doesn’t work in old runtime” (#12882)
- Fixed “Destructor not invoked because it is instantiated too late, old runtime” (#12883)
- Fixed “The collect macro does not handle if/case correctly” (#12874)
- Fixed “allow typed/untyped params in magic procs (even if not in stdlib)” (#12911)
- Fixed “ARC/newruntime memory corruption” (#12899)
- Fixed “tasyncclosestall.nim still flaky test: Address already in use” (#12919)
- Fixed “newruntime and computed goto: variables inside the loop are in generated code uninitialised” (#12785)
- Fixed “osx: dsymutil needs to be called for debug builds to keep debug info” (#12735)
- Fixed “codegen ICE with ref objects, gc:destructors” (#12826)
- Fixed “mutable iterator cannot yield named tuples” (#12945)
- Fixed “parsecfg stores “\r\n” line breaks just as “\n”” (#12970)
- Fixed “db_postgres.getValue issues warning when no rows found” (#12973)
- Fixed “ARC: Unpacking tuple with seq causes segfault” (#12989)
- Fixed “ARC/newruntime: strutils.join on seq with only empty strings causes segfault” (#12965)
- Fixed “regression (1.0.4):
{.push exportc.}
wrongly affects generic instantiations, causing codegen errors” (#12985) - Fixed “cdt, crash with –gc:arc, works fine with default gc” (#12978)
- Fixed “ARC: No indexError thrown on out-of-bound seq access, SIGSEGV instead” (#12961)
- Fixed “ARC/async: Returning in a try-block results in wrong codegen” (#12956)
- Fixed “asm keyword is generating wrong output C code when –cc:tcc” (#12988)
- Fixed “Destructor not invoked” (#13026)
- Fixed “ARC/newruntime: Adding inherited var ref object to seq with base type causes segfault” (#12964)
- Fixed “Style check error with JS compiler target” (#13032)
- Fixed “regression(1.0.4): undeclared identifier: ‘readLines’; plus another regression and bug” (#13013)
- Fixed “regression(1.04)
invalid pragma: since
with nim js” (#12996) - Fixed “Sink to MemMove optimization in injectdestructors” (#13002)
- Fixed “–gc:arc:
catch
doesn’t work with exception subclassing” (#13072) - Fixed “nim c –gc:arc –exceptions:{setjmp,goto} incorrectly handles raise;
nim cpp --gc:arc
is ok” (#13070) - Fixed “typetraits feature request - get subtype of a generic type” (#6454)
- Fixed “CountTable inconsistencies between keys() and len() after setting value to 0” (#12813)
- Fixed “{.align.} pragma is not applied if there is a generic field” (#13122)
- Fixed “ARC, finalizer, allow rebinding the same function multiple times” (#13112)
- Fixed “
nim doc
treatsexport localSymbol
incorrectly” (#13100) - Fixed “–gc:arc SIGSEGV (double free?)” (#13119)
- Fixed “codegen bug with arc” (#13105)
- Fixed “symbols not defined in the grammar” (#10665)
- Fixed “[JS] Move is not defined” (#9674)
- Fixed “[TODO] pathutils.
/
can return invalid AbsoluteFile” (#13121) - Fixed “regression(1.04)
nim doc main.nim
generates broken html (no css)” (#12998) - Fixed “Wrong supportsCopyMem on string in type section” (#13095)
- Fixed “Arc, finalizer, out of memory” (#13157)
- Fixed “
--genscript
messes up nimcache and future nim invocations” (#13144) - Fixed “–gc:arc with –exceptions:goto for “nim c” generate invalid c code” (#13186)
- Fixed “[regression] duplicate member
_i1
codegen bug” (#13195) - Fixed “RTree investigations with valgrind for –gc:arc” (#13110)
- Fixed “relativePath(“foo”, “.”) returns wrong path” (#13211)
- Fixed “asyncftpclient - problem with welcome.msg” (#4684)
- Fixed “Unclear error message, lowest priority” (#13256)
- Fixed “Channel messages are corrupted” (#13219)
- Fixed “Codegen bug with exportc and case objects” (#13281)
- Fixed “[bugfix] fix #11590: c compiler warnings silently ignored, giving undefined behavior” (#11591)
- Fixed “[CI] tnetdial flaky test” (#13132)
- Fixed “Cross-Compiling with -d:mingw fails to locate compiler under OSX” (#10717)
- Fixed “
nim doc --project
broken with imports below main project file or duplicate names” (#13150) - Fixed “regression: isNamedTuple(MyGenericTuple[int]) is false, should be true” (#13349)
- Fixed “–gc:arc codegen bug copying objects bound to C structs with missing C struct fields” (#13269)
- Fixed “write requires conversion to string” (#13182)
- Fixed “Some remarks to stdlib documentation” (#13352)
- Fixed “a
check
in unittest generated by template doesn’t show actual value” (#6736) - Fixed “Implicit return with case expression fails with ‘var’ return.” (#3339)
- Fixed “Segfault with closure on arc” (#13314)
- Fixed “[Macro] Crash on malformed case statement with multiple else” (#13255)
- Fixed “regression:
echo 'discard' | nim c -r -
generates a file ‘-‘ ;-
should be treated specially” (#13374) - Fixed “on OSX, debugging (w gdb or lldb) a nim program crashes at the 1st call to
execCmdEx
” (#9634) - Fixed “Internal error in getTypeDescAux” (#13378)
- Fixed “gc:arc mode breaks tuple let” (#13368)
- Fixed “Nim compiler hangs for certain C/C++ compiler errors” (#8648)
- Fixed “htmlgen does not support
data-*
attributes” (#13444) - Fixed “[gc:arc] setLen will cause string not to be null-terminated.” (#13457)
- Fixed “joinPath(“”, “”) is “/” ; should be “”” (#13455)
- Fixed “[CI] flaky test on windows: tests/osproc/texitcode.nim” (#13449)
- Fixed “Casting to float32 on NimVM is broken” (#13479)
- Fixed “
--hints:off
doesn’t work (doesn’t override ~/.config/nim.cfg)” (#8312) - Fixed “joinPath(“”, “”) is “/” ; should be “”” (#13455)
- Fixed “tables.values is broken” (#13496)
- Fixed “global user config can override project specific config” (#9405)
- Fixed “Non deterministic macros and id consistency problem” (#12627)
- Fixed “try expression doesn’t work with return on expect branch” (#13490)
- Fixed “CI will break every 4 years on feb 28: times doesn’t handle leap years properly” (#13543)
- Fixed “[minor]
nimgrep --word
doesn’t work with operators (eg misses1 +% 2
)” (#13528) - Fixed “
as
is usable as infix operator but its existence and precedence are not documented” (#13409) - Fixed “JSON unmarshalling drops seq’s items” (#13531)
- Fixed “os.joinPath returns wrong path when head ends ‘' or ‘/’ and tail starts ‘..’.” (#13579)
- Fixed “Block-local types with the same name lead to bad codegen (sighashes regression)” (#5170)
- Fixed “tuple codegen error” (#12704)
- Fixed “newHttpHeaders does not accept repeated headers” (#13573)
- Fixed “regression: –incremental:on fails on simplest example” (#13319)
- Fixed “strscan can’t get value of last element in format” (#13605)
- Fixed “hashes_examples crashes with “Bus Error” (unaligned access) on sparc64” (#12508)
- Fixed “gc:arc bug with re-used
seq[T]
” (#13596) - Fixed “
raise CatchableError
is broken with –gc:arc when throwing inside a proc” (#13599) - Fixed “cpp –gc:arc –exceptions:goto fails to raise with discard” (#13436)
- Fixed “terminal doesn’t compile with -d:useWinAnsi” (#13607)
- Fixed “Parsing “sink ptr T” - region needs to be an object type” (#12757)
- Fixed “gc:arc + threads:on + closures compilation error” (#13519)
- Fixed “[ARC] segmentation fault” (#13240)
- Fixed “times.toDateTime buggy on 29th, 30th and 31th of each month” (#13558)
- Fixed “Deque misbehaves on VM” (#13310)
- Fixed “Nimscript listFiles should throw exception when path is not found” (#12676)
- Fixed “koch boot fails if even an empty config.nims is present in ~/.config/nims/ [devel regression]” (#13633)
- Fixed “nim doc generates lots of false positive LockLevel warnings” (#13218)
- Fixed “Arrays are passed by copy to iterators, causing crashes, unnecessary allocations and slowdowns” (#12747)
- Fixed “Range types always uses signed integer as a base type” (#13646)
- Fixed “Generate c code cannot compile with recent devel version” (#13645)
- Fixed “[regression] VM: Error: cannot convert -1 to uint64” (#13661)
- Fixed “Spurious raiseException(Exception) detected” (#13654)
- Fixed “gc:arc memory leak” (#13659)
- Fixed “Error: cannot convert -1 to uint (inside tuples)” (#13671)
- Fixed “strformat issue with –gc:arc” (#13622)
- Fixed “astToStr doesn’t work inside generics” (#13524)
- Fixed “oswalkdir.walkDirRec wont return folders” (#11458)
- Fixed “
echo 'echo 1' | nim c -r -
silently gives wrong results (nimBetterRun not updated for stdin)” (#13412) - Fixed “gc:arc destroys the global variable accidentally.” (#13691)
- Fixed “[minor] sigmatch errors should be sorted, for reproducible errors” (#13538)
- Fixed “Exception when converting csize to clong” (#13698)
- Fixed “ARC: variables are no copied on the thread spawn causing crashes” (#13708)
- Fixed “Illegal distinct seq causes compiler crash” (#13720)
- Fixed “cyclic seq definition crashes the compiler” (#13715)
- Fixed “Iterator with openArray parameter make the argument evaluated many times” (#13417)
- Fixed “net/asyncnet: Unable to access peer’s certificate chain” (#13299)
- Fixed “Accidentally “SIGSEGV: Illegal storage access” error after arc optimizations (#13325)” (#13709)
- Fixed “Base64 Regression” (#13722)
- Fixed “A regression (?) with –gc:arc and repr” (#13731)
- Fixed “Internal compiler error when using the new variable pragmas” (#13737)
- Fixed “bool conversion produces vcc 2019 warning at cpp compilation stage” (#13744)
- Fixed “Compiler “does not detect” a type recursion error in the wrong code, remaining frozen” (#13763)
- Fixed “[minor] regression:
Foo[0.0] is Foo[-0.0]
is now false” (#13730) - Fixed “
nim doc
- only whitespace on first line causes segfault” (#13631) - Fixed “hashset regression” (#13794)
- Fixed “
os.getApplFreebsd
could return incorrect paths in the case of a long path” (#13806) - Fixed “Destructors are not inherited” (#13810)
- Fixed “io.readLines AssertionError on devel” (#13829)
- Fixed “exceptions:goto accidentally reset the variable during exception handling” (#13782)