C3C Release Notes

0.6.6 Change list

Changes / improvements

None

Fixes

Fix case trying to initialize a char[*]* from a String.
Fix Map & HashMap put_all_for_create not copying all elements, causing init_from_map to create incomplete copy.
Fix bug when a macro calling an extern function was called in another module also declaring and calling the same function. #1690

Stdlib changes

Increase BitWriter.write_bits limit up to 32 bits.
Updates to Slice2d, like get_xy and others.
Added iter() value_iter() and key_iter() to HashMap.
Add "tokenizer" to String.

0.6.5 Change list

Changes / improvements

Allow splat in initializers.
Init command will now add test-sources to project.json #1520
a++ may be discarded if a is optional and ++/-- works for overloaded operators.
Improve support for Windows cross compilation on targets with case sensitive file systems.
Add "sources" support to library manifest.json, defaults to root folder if unspecified.
Add char_at method in DString and operators [], len, []= and &[].
Add -q option, make --run-once implicitly -q.
Add -v, -vv and -vvv options for increasing verbosity, replacing debug-log and debug-stats options.

Fixes

Fix bug where a > 0 ? f() : g() could cause a compiler crash if both returned void!.
@builtin was not respected for generic modules #1617.
Fix issue writing a single byte in the WriteBuffer
A distinct inline pointer type can now participate in pointer arithmetics.
Support &a[0] returning the distinct type when applying it to a distinct of a pointer.
Fix error when calling HashMap.remove on uninitialized HashMap.
Fix issue with resolved try-unwrap in defer.
Fix issue with overloaded subscript and ++/-- and assign ops (e.g. *=)
Fix issue with properties in different targets not being respected #1633.
Indexing an Optional slice would crash in codegen #1636.
SimpleHeapAllocator bug when splitting blocks allowed memory overrun.
Not possible to alias or take reference for extension methods on non-user defined types. #1637
Prevent methods from using names of properties or fields. #1638
b64 / hex data strings can now be used with ` as well.
Contracts on generic modules would evaluate too late, sometimes not catching the error until it already occurred elsewhere.
Fix bug preventing optionals from being used in ranges or as indices.
Crash compiling for arm64 when returning 16 byte and smaller structs by value not a power of 2 #1649.
Enforce single module compilation for static libraries to make constructors run properly.
Crash when using --no-obj without compile-only. #1653
Do not produce expression locations for windows.
Issue where multiple methods were accepted for the same type.
Issue where a method was linked to a type alias instead of the underlying type.
Fix Fnv1a encoding.
Fix issue with accessing arrays in access-overloaded types, e.g. list[1][2] #1665.
Cast removing arbitrary array indices and converting them to pointers should always be fine #1664
Incorrect "no-libc" definition of cos, making it unavailable for wasm.
Fix issue with the adjoint and inverse calculations for Matrix2x2.
It was possible to create 0 length arrays using byte literals. #1678
Crash when a constant null typeid is checked for properties. #1679

Stdlib changes

Add io::MultiReader, io::MultiWriter, and io::TeeReader structs.
Updated Base32 API.
Add file::save.
Add memcpy / memset / memcmp to nolibc.
Add sort::quickselect to find the k-th smallest element in an unordered list.
Add sort::is_sorted to determine if a list is sorted.

0.6.4 Change list

Changes / improvements

Const vector -> const slice implicit conversion.
Slicing arrays, slices and bytes at compile time #1466.
Better error for int a[4] = .... #1518
Better error for int Foo(int a) declarations #1516
Improve error message in the case of MyInterface x = foo; #1522
Deprecate @adhoc, allow non-nested ad hoc generic types.
Constant bytes <=> char[] conversion should work #1514.
Infer now works across ternary.
Interfaces now support .ptr and .type directly without casting to any.
Switch to <* *> docs.
Improve error messages on expressions like var $type = int; #1553.
Disallow casting a void* to any or an interface, unless it is null.
Defer resolution of declarations when looked up in def aliased #1559.
Adding constants to the Json AST #1540
Adding info to the globals inside Json AST #1541
Null-check function pointer invocation #1573.
string::new_struct_to_str and io::struct_to_format to dump struct data.
io::print will now print structs.
Improve error message when using void aliases as variable storage type.
Add a target type: "prepare" which doesn't compile anything (but may run exec)

Fixes

Unsupported int[*] $x = { 1, 2, 3, 4 } #1489.
Unexpected compile error using a typed constant with copysign #1517
Incorrect subscript resolution #1519.
Segfault with passing a program with - using stdin.
Using no module with - would reject the program.
Unintended deref of pointers with methods caused regression with hash function.
Fix broken sincos function.
Bug when a continue is copied in a defer.
Compiler error when any/interface initialized using {} #1533.
Bug when defers and $if were combined in a macro, which would cause miscompilation.
Fixes to the CSV reader.
Crash returning struct or vector from function using ternary expression #1537.
Improved error message on invalid subscript index type #1535.
Improved error message when declaring a variable void!.
Cannot use void as a generic parameter #1546
Interfaces not correctly copied with generics #1545
Memory leak in keys.new_list fixed.
Standard library is now correctly weakly linked, fixing the use of C3 .so together with executable. #1549, #1107.
Wrong error message for interface methods with body #1536.
Empty expression block would crash compiler with debug on #1554.
Improve infer conversions on constants, e.g. ZString a = foo ? "a" : "b"; #1561
Show error when declarations do not start with fn in interfaces. #1565
if (try foo) was handled incorrectly inside a defer.
&self argument not implicitly null checked. #1556.
(uptr)&((Foo*)null).a incorrectly inserts a null check. #1544
Incorrect error message when $eval is provided an invalid string. #1570
HashMap.copy_keys did not properly copy keys which needed to be allocated #1569
Named vector component access would not fold at compile time. #1574
$define would occasionally not properly evaluate declarations it encountered.
Fixes with error handling recursive @tag #1583.
Sometimes generating introspection info would not be in the global scope causing a crash #1586.
@tag on macros cannot be retrieved with tagof #1582
Taking the $typeof of a wildcard optional returns void!.

Stdlib changes

Remove unintended print of char[] as String
Add read/write to stream with big endian ints.
Move accidently hidden "wrap_bytes".
Added CBool #1530.
Added encoding/base32 module.

0.6.3 Change list

Changes / improvements

Introduce arg: x named arguments instead of .arg = x, deprecate old style.
Support splat for varargs #1352.
Allow var in lambdas in macros.
Support int[*] { 1, 2, 3 } expressions.
Support inline struct designated init as if inline was anonymous.
Introduce the .paramsof property.
Support environment variable 'C3C_LIB' to find the standard library.
Support environment variable 'C3C_CC' to find the default C compiler.
Support casting bitstructs to bool.
Allow user-defined attributes to have typed parameters.
Add .gitkeep files to project subfolders.
Add env::COMPILER_BUILD_HASH and env::COMPILER_BUILD_DATE
Support linking .o files in compilation command. #1417
Slicing constant strings at compile time works.
Add project fetch subcommand to fetch missing project dependencies (general and target specific)
Ability of vendor-fetch to download the dependencies in the first specified path dependencies-search-path
Ability of vendor-fetch to register the fetched dependencies in the project file.
Allow the "self" parameter to be $/# for macro methods.
Support compile time slicing of untyped lists.
Allow specifying an import module using @wasm #1305.
Deprecated inline generic types outside of struct definitions and macros unless marked @adhoc.
Improved method detection in earlier stages of checking.
Allow @norecurse attribute for non-recursive imports #1480.
wasm32 / wasm64 targets are use-libc=no by default.
Add hash/sha256 module

Fixes

Issue where a lambda wasn't correctly registered as external. #1408
Generic methods were incorrectly registered as functions, leading to naming collisions. #1402
Deprecated tuple / triple types.
Converting a slice to a vector/array would copy too little data.
Crash when reading an empty 'manifest.json'.
"optsize" did not work correctly in project.json.
l[0].a = 1 now supported for overloads due to better lvalue handling #1357.
Asserts are retained regardless of optimization when running tests.
Limit object filename lengths. #1415
Fix regression for $include.
Correct '.so' suffix on dynamic libraries on Linux.
Fix bug where inline index access to array in a struct would crash the compiler.
Asserts are now correctly included and traced in when running tests.
Use atexit to fix finalizers on Windows #1361.
Fix bugs in "trap-on-wrap" #1434.
Bug with casting anyfault to error.
Lambda / function type would accidentally be processed as a method.
Fix error message when not finding a particular function.
Crash invoking a @body argument with the wrong number of parameters.
Fix reordering semantics in struct assignment.
Regression when passing types as #expr arguments. #1461
Temp allocator overwrites data when doing reset on extra allocated pages. #1462
User defined attributes could not have more than 1 parameter due to bug.
Folding a constant array of structs at compile time would cause an assert.
Enum attributes would be overwritten by enum value attributes.
LLVM issue with try when bool is combined #1467.
Segfault using ternary with no assignment #1468.
Inner types make some errors misleading #1471.
Fix bug when passing a type as a compile time value.
Fix bug due to enum associated values not being checked for liveness.
Regression when compile time accessing a union field not last assigned to.
Safer seed of rand() for WASM without libc.
Bad error message aliasing an ident with a path. #1481.
Error when slicing a struct with an inline array #1488.
Improved error messages on Foo a = foo { 1 }; #1496
Bug in json decoder escape handling.
Fix bug when reading zip manifest, that would not return a zero terminated string. #1490
Fix thread tests.
Detect recursion errors on non-recursive mutexes in safe mode.
Foreach over distinct pointer failed to be caught as error #1506.
Foreach over distinct iterable would ignore operator(len).
Compiler crash when compiling c code in a library without --obj-out #1503.

Stdlib changes

Additional init functions for hashmap.
format functions are now functions and work better with splat.
Add support for the QOI format.
Add io::read_new_fully for reading to the end of a stream.
Add io::wrap_bytes for reading bytes with io functions.
Add rnd and rand_in_range default random functions.
Additional timezone related functions for datetime.
Added MD5 and crypto::safe_compare.
Added generic HMAC.
Added generic PBKDF2 implementation.
DString reverse.
DString.insert_at now has variants for other types.

0.6.2 Change list

Changes / improvements

Updated LLVM passes
Added is_substruct type property.
Scalar -> vector not implicit in call or assign.
Added --vector-conv to enable the old scalar->vector conversion behaviour.
Added "weak" type aliases def Foo = my_foo::Foo @weak;
*-add keys in targets in manifest.json and project.json are deprecated.
Made "add" the default for things like sources, dependencies and other keys in project and library files.
Give some symbol name suggestions when the path is matched.
Don't generate .o files on compile and compile-run if there is no main.
c3c init-lib does not create the directory with the .c3l suffix #1253
Permit foreach values to be optional.
Add --show-backtrace option to disable backtrace for even smaller binary.
Untested Xtensa support.
&& doesn't work correctly with lambdas #1279.
Fix incorrect override of optimization levels when using projects.
Add experimental @noalias attribute.
Add a --run-once option to delete the output file after running it.
Add @const attribute for macros, for better error messages with constant macros.
Add wincrt setting to libraries.
Add +++ &&& ||| as replacement for $concat, $and and $or.
Add methodsof to type info for struct, union and bitstruct.
Added @tag tagof and has_tagof to user defined types and members.
Added c-include-dirs project/manifest setting.
The compiler now skips UTF8 BOM.
Printable values passed to the Formatter as pointers, will print as if passed by value.
Pointers are rendered with "0x" prefix when passed to '%s'.
Add temp allocator scribble.
Use PIC by default on Linux.
$exec may now provide a stdin parameter.
Introduce $vaarg[...] syntax and deprecate the old $vaarg(...).
Similar change to $vasplat: $vasplat and $vasplat[1..].
Add $member.get(value) to replace value.$eval($member.nameof)
Improve the error message when the compilation does not produce any files #1390.
Add fmod implementation for nolibc.

Fixes

Broken WASM library code.
Regression: Invalid is_random implementation due to changes in 0.6.
dbghelp.lib was linked even on nolibc on Windows.
Fix incorrect linker selection on some platforms.
Struct members declared in a single line declaration were not sharing attributes. #1266
opt project setting now properly documented.
Incorrect justify formatting of integers.
Assertion with duplicate function pointer signatures #1286
Distinct func type would not accept direct function address assign. #1287
Distinct inline would not implement protocol if the inlined implemented it. #1292
Distinct inline can now be called if it is aliasing a function pointer.
Bug in List add_array when reserving memory.
Fix issue where a compile time parameter is followed by "...".
Fix issue with some conversions to untyped list.
Issue where a if (catch e = ...) in a defer would be incorrectly copied. Causing codegen error.
Variable in if-try / if-catch cannot be a reused variable name.
Vararg interfaces were broken.
LLVM codegen for constants in enums could fail.
Fixes to the socket functions.
Improved output when pointer is out of range.
Better error when casting to a distinct fails.
With single module, name the .o file after what -o provides. #1306
Bitstruct members can now have attributes.
% analysis was incorrect for int vectors.
When resolving inherited interfaces, the interface type wasn't always resolved.
Fix issues when checking methods and interfaces hasn't been resolved yet.
Fix Vec2.angle
Update to libc::setjmp on Win32, to do no stack unwinding.
Recursively follow interfaces when looking up method.
Int128 alignment change in LLVM fixed on x64.
Fix interface lazy resolution errors.
Interface resolution when part of generics #1348.
Assert not properly traced #1354.
Ordering issues with $include / $exec fixed #1302.
Issues with wincrt linking.
Debug info with recursive canonical type usage could cause segfault.
Missing check on optional left hand side for s.x.
Incorrect zero analysis on foo["test"] = {} #1360.
Bug converting untyped list #1360.
Benchmark / test no longer suppresses debug info. #1364.
Bug when compile time subtracting a distinct type.
insert_at incorrectly prevented inserts at the end of a list.
Fix aligned alloc for Win32 targets.
Compiler didn't detect when a module name was used both as a generic and regular module.
Assigning a const zero to an aliased distinct caused an error.
--path is now properly respected.
--test will now provide the full filename and the column.
Fix of bug in defer (catch err) with a direct return error.
Too restrictive compile time checks for @const.
Fixes to wasm nolibc in the standard library.
Fixed int128 div/mod.
Fix WASM memory init priority.
Fix bug with defer (catch err) when used together with regular defer.
Methods can now properly be aliased using def #1393.
Memory leak in Object when not using temp allocators.
Tracking allocator would double the allocations in the report.
printf will now show errors in the output when there are errors.
Bug where if try would work incorrectly in a macro.
Prevent loading / storing large structs with LLVM.

Stdlib changes

send and recv added to libc for Posix / Win32.
Add support to destroy temp allocators.
Deprecated path.append, path.tappend, getcwd, tgetcwd, path.absolute, ls.
Deprecated env::get_config_dir, replaced by env::new_get_config_dir.
Added path.has_extension, path.new_append, path.temp_append, new_cwd, temp_cwd, path.new_absolute, new_ls, temp_ls.
Added dstring.replace
New hashmap type, Map
Added ElasticArray.
Added types::is_signed, types::is_unsigned and types::inner_type.

0.6.1 Change list

Changes / improvements

Addition of $append and $concat functions.
Added $$str_hash, $$str_upper, $$str_lower, $$str_find builtins.
Improved error notes when call expressions have errors.
Trailing body arguments may now be &ref, #hash, $const and $Type arguments.
"panic-msg" setting to suppress panic message output.
Require @export functions to have @export types.
Disallow leading/trailing/duplicate '_' in module names.
Updated mangling.
Added $$unaligned_load and $$unaligned_store.
--no-headers option to suppress creating headers when generating a library.
Support c-file compilation in libraries.
Allow using $defined(&a[1]) to check if the operation is supported.
Max number of members in a struct is limited to 65535.
The maximum number of parameters in a call is now 255, up from 127.
Array comparison now uses built-in memcmp on LLVM to enable optimizations.
Prevent implicit array casts to pointers with higher alignment #1237.
Macro $case statements now pick the first match and does not evaluate the rest.
manifest.json is now checked for incorrect keys.
Added --list-manifest-properties to list the available properties in manifest.json.
Indexing into a constant array / struct now works at compile time.
Improved error message when trying user foreach with an untyped list.
RISCV asm support.

Fixes

Error with unsigned compare in @ensure when early returning 0 #1207.
Prevent Mach-O from removing @init and @dynamic in a more reliable way #1200.
Fix of missing copy of parameterized custom attributes.
Fixed crash on certain recursive function definitions #1209.
Return the typekind "FUNC" for a function pointer.
No longer possible to dereference a function pointer.
Fix bug with @jump miscompile.
Bit negate does implicit integer promotion.
Bitstructs, unions and flexible arrays now correctly emitted in headers.
Fix distinct inline conversions.
Bit negating const zero flags would give an incorrect result.
Fix to scalar -> vector conversions.
Bug fix for rethrow + defer catch.
Wrong size for structs containing overaligned structs #1219
$typeof(*x) should be valid when x is an [out] parameter #1226
Fix ABI lowering for 128 bit vectors on Linux.
Bad error message when using a generic method without generic parameters #1228
Private function called from nested macro not visible to linker #1232
Bitstructs in structs would not be correctly be handled in some cases.
Fix problem where a $$FUNC would return "" when evaluated for a static in a function #1236.
ordinal is no longer a valid associated value name for enums.
Constants defined by indexing into another constant could fail codegen.
Stdlib nolibc code bugs fixed.
Regression: duplicate symbols with static variable declared in macro #1248.
Unsplat with named parameters was accidentally disallowed.
Reference parameter doesn't work with vector subscript #1250.
The msvc_sdk script failed to work properly on windows when run in folders with spaces.
Using winmain would call the wrong definition #1265.
DynamicArenaAllocator would not correctly free.

Stdlib changes

Added remove_first_item remove_last_item and remove_item as aliases for the match functions.
Added @str_hash, @str_upper, @str_lower, @str_find compile time macros.
Remove "panic" text from unreachable() when safe mode is turned off.
Added @unaligned_store and @unaligned_load.
Null ZString, DString or pointer prints "(null)" for printf.
Updated sorting API.
Insertion sort and counting sort added.
Added missing mem and mem::allocator functions for aligned allocations.
Added new_init_with_array and temp_init_with_array for List.
Fixed posix NativeMutex.lock_timeout.
Fixed env::ARCH_32_BIT and env::ARCH_64_BIT.
Added time::us.

0.6.0 Change list

Changes / improvements

@default implementations for interfaces removed.
any* => any, same for interfaces.
Private / local globals now have internal visibility in LLVM.
Updated enum syntax.
'rgba' also available for swizzling.
The name "subarray" has been replaced by the more well known name "slice' across the codebase.
Improved alignment handling.
Add --output-dir to command line. #1155
Allow making distinct types out of "void", "typeid", "anyfault" and faults.
Removed --system-linker setting.
"Try" expressions may not be any binary or unary expressions. So for example try foo() + 1 is disallowed.
Added $$REGISTER_SIZE for int register size.
assert(false) only allowed in unused branches or in tests. Compile time failed asserts is a compile time error.
Require expression blocks returning values to have the value used.
Detect "unsigned >= 0" as errors.
Improve callstack debug information #1184.
Request jump table using @jump for switches.
Improved inline debug information.
Improved error messages on inlined macros.
Introduce MSVC compatible SIMD ABI.
$foreach doesn't create an implicit syntactic scope.
Error of @if depends on @if
Support defer (catch err)
Added print-input command argument to print all files used for compilation
Allow recursive function definitions as long as they are pointers. #1182
Default CPU to native if less than AVX, otherwise use AVX.
Bounds checking on length for foo[1:2] slicing #1191.
Foreach uses non-wrapping add/dec.

Fixes

Fixed issue in safe mode when converting enums.
Better checking of operator methods.
Bug when assigning an optional from an optional.
Lambdas were not type checked thoroughly #1185.
Fix problems using reflection on interface types #1203.
@param with unnamed macro varargs could crash the compiler.
Compiler crash using enum nameof from different module #1205.
Incorrect length passed to scratch buffer printf.
Casting to a bitstruct would be allowed even if the type was the wrong size.
Generic modules parameterized with constants would sometimes get the wrong parameterized module name causing conversion errors #1192.
Duplicate emit of expressions on negation would incorrectly compile negated macros.
Casting a slice address to its pointer type should not compile #1193.
Union is not properly zero-initialized with designated initializer #1194.
Compile time fmod evaluates to 0 #1195.
Assertion failed when casting (unsigned) argument to enum #1196
Correct debug info on parameters without storage.
Fix location on foreach debug output.
Compiler crash on designated initializer for structs with bitstruct.

Stdlib changes

"init_new/init_temp" removed.
LinkedList API rewritten.
List "pop" and "remove" function now return Optionals.
RingBuffer API rewritten. Allocator interface changed.
Deprecated Allocator, DString and mem functions removed.
"identity" functions are now constants for Matrix and Complex numbers.
Removed 'append' from Object and List, replaced by 'push'.
GenericList renamed AnyList.
Proper handling of '.' and Win32 '//server' paths.
Path normalization - fix possible null terminator out of bounds.
Add 'zstr' variants for string::new_format / string::tformat.
Fix mutex and wait signatures for Win32.

0.5.5 Change list

Changes / improvements

Disallow multiple _ in a row in digits, e.g. 1__000.
Added @link attribute.
New 'linker' build option.
"linker" project setting updated, "system-linker" removed.

Fixes

Struct/union members now correctly rejects members without storage size #1147.
math::pow will now correctly promote integer arguments.
Pointer difference would fail where alignment != size (structs etc) #1150
Fixed array calculation for npot2 vectors.
$$memcpy_inline and $$memset_inline fixed.
.$Type = ... and .$foo = ... now works #1156.
int.min incorrect behaviour #1154.
Bitstruct cast to other bitstruct by way of underlying type would fail #1159.
Bug in time.add_seconds #1162.
Remove initial './' in Win32 and convert '/' to '' for paths when running a binary.
'output' directory for projects was incorrect in templates.
Regression: no stacktrace.
For MacOS, running with higher optimization would crash as initializers were removed.
compile-run and run now returns the proper return code.
Allow String constants -> ichar*, and allow integer pointers to explicitly convert between unsigned signed.
Bug in unaligned return value lowering for Aarch64.

Stdlib changes

Added new_aligned and alloc_aligned functions to prevent accidental under-alignment when allocating simd.
Fixes to realloc of aligned allocations
Use native Windows calls on aligned allocations on Windows.
mem::copy_inline, mem::clear_inline and mem::set_inline added.
mem::copy / clear / set no longer has an $inline attribute.
Native aligned libc malloc on Windows & POSIX.
Simplification of the allocator interface.
CoreFoundation only linked on MacOS when used.

0.5.4 Change list

Changes / improvements

Hash variables may now take a designated initializer.
Added @safemacro to override the @ requirement for non-function-like macros.
More information available with debug log in non debug builds.
Removed install_win_reqs.bat which didn't work well.
Support ** to mean ./**
MacOS init/finalizer now respects priority.
Bitstructs supports != and ==.
Support Windows .def files using --windef.
Bitstructs now fold compile time constant bit ops.
Fix issue where in some cases a constant global with a string wasn't folded (e.g. in asm stmts)
Lateral implicit imports removed.
Default to '.' if no libdir is specified.
Improved error messages for --lib.
Added --linker to set the linker #1067.

Fixes

Fixes to macro context evaluation with macro varargs.
Dynamic methods registered before init functions on MacOS.
Fixed clobber on x86 cpuid instruction.
Removed invalid syntax from grammar.y.
output project setting now respected.
Aliased declarations caused errors when used in initializers.
Aliased consts used as constant initializers caused errors.
Exported module names replace :: by _.
Const ternary would evaluate incorrectly for ?:
$$MODULE would report the incorrect module name in macros.
Fixed debug info for globals and for/switch scopes.
out now correctly detects subscript[] use.
Ambiguous recursive imports are now correctly detected.
Overzealous local escape check corrected #1127.
Fixes to the matrix functions #1130.

Stdlib changes

Deprecated Allocator helper functions.
Added mem::allocator functions corresponding to removed allocator functions.
Changed mem::new / mem::temp_new to accept an optional initializer, and will clear by default.
Mem _clear and _zero variants deprecated. "new_*" functions will clear by default.
Mem "alloc_" functions replace old "new_" behaviour.
Fixed temp memory issue with formatter.
Added temp_push and temp_pop for pushing / popping the temp allocator manually (or from C).
Added byte_size to List
Added GenericList.

0.5.3 Change list

Changes / improvements

Migrate from using actual type with GEP, use i8 or i8 array instead.
Optimize foreach for single element arrays.
Move all calls to panic due to checks to the end of the function.

Fixes

Single module command line option was not respected.
Fixed issue with compile time defined types (String in this case), which would crash the compiler in certain cases.
Projects now correctly respect optimization directives.
Generic modules now correctly follow the implicit import rules of regular modules.
Passing an untyped list to a macro and then using it as a vaarg would crash the compiler.
Extern const globals now work correctly.

Stdlib changes

init_new/init_temp deprecated, replaced by new_init and temp_init.

0.5.2 Change list

Changes / improvements

Allow trailing comma in calls and parameters #1092.

Fixes

Fixes issue where single character filenames like 'a.c3' would be rejected.
Better errors when index type doesn't match len() when doing user defined foreach.
Fixes to to_int for hexadecimal strings.
Fixed issue when using a generic type from a generic type.
Bug with vector parameters when the size > 2 and modified.
Missing error on assigning to in-parameters through subscripting.
Inference of a vector on the lhs of a binary expression would cause a crash.
Fixes to PriorityQueue

Stdlib changes

Allow to_int family functions take a base, parsing base 2-10 and 16.

0.5.1 Change list

Changes / improvements

Improved error messages for const errors.
Do not link with debug libraries unless using static libraries.
Add 'print-linking' build option.
System linker may be used even if the target arch is different from current.
Slice -> array/vector works for constant slice lengths.

Fixes

On Aarch64 use the correct frame pointer type.
On Aarch64 macOS, ensure the minimum version is 11.0 (Big Sur)
Fixes to the yacc grammar.
Dsym generation on macOS will correctly emit -arch.
Stacktrace on signals on Linux when backtrace is available.

Stdlib changes

delete and delete_range added to DString.
Splitter iterator added.
splitter and iterator String methods.
load_new, load_buffer and load_temp std::io::file functions.

0.5.0 Change List

Changes / improvements

Trackable allocator with leak allocation backtraces.
$defined can take a list of expressions.
$and compile time "and" which does not check expressions after the first is an error.
$is_const returns true if an expression is compile time const.
$assignable returns true is an expression may be implicitly cast to a type.
$checks and @checked removed, replaced by an improved $defined
Asm string blocks use AT&T syntax for better reliability.
Distinct methods changed to separate syntax.
'exec' directive to run scripts at compile time.
Project key descriptions in --list command.
Added init-lib to simplify library creation.
Local const work like namespaced global const.
Added $$atomic_fetch_* builtins.
vectors may now contain pointers.
void! does not convert to anyfault.
$$masked_load / $$masked_store / $$gather / $$scatter for vector masked load/store.
$$select builtin for vector masked select.
Added builtin benchmarks by benchmark, compile-benchmark commands and @benchmark attribute.
Subtype matching in type switches.
Added parentof typeid property.
Slice assignment is expanded.
Enforced optional handling.
Better dead code analysis, and added dead code errors.
Exhaustive switches with enums has better analysis.
Globals may now be initialized with optional values.
New generic syntax.
Slice initialization.
$feature for feature flags.
Native stacktrace for Linux, MacOS and Windows.
Macro ref parameters are now of pointer type and ref parameters are not assignable.
Added nextcase default.
Added $embed to embed binary data.
Ad hoc generics are now allowed.
Allow inferred type on method first argument.
Fix to void expression blocks
Temporary objects may now invoke methods using ref parameters.
Delete object files after successful linking.
Compile time subscript of constant strings and bytes.
@if introduced, other top level conditional compilation removed.
Dynamically dispatched interfaces with optional methods.
$if now uses $if <expr>: syntax.
$assert now uses $assert <expr> : <optional message>
$error is syntax sugar for $assert false : "Some message"
$include, $echo no longer has mandatory () around the arguments.
$exec for including the output of files.
assert no longer allows "try unwrap"
Updated cpu arguments for x86
Removed support for ranged case statements that were floats or enums, or non-constant.
nextcase with a constant expression that does not match any case is an error.
Dropped support for LLVM 13-14.
Updated grammar and lexer definition.
Removal of $elif.
any / anyfault may now be aliased.
@stdcall etc removed in favor of @callconv
Empty fault definitions is now an error.
Better errors on incorrect bitstruct syntax.
Internal use wildcard type rather than optional wildcard.
Experimental scaled vector type removed.
Disallow parameterize attributes without parameters eg define @Foo() = { @inline }.
Handle @optreturn contract, renamed @return!.
Restrict interface style functions.
Optional propagation and assignment '!' and '?' are flipped.
Add l suffix (alias for i64).
Allow getting the underlying type of anyfault.
De-duplicate string constants.
Change @extname => @extern.
define and typedef removed.
define is replaced by def.
LLVM "wrapper" library compilation is exception free.
private is replaced by attribute @private.
Addition of @local for file local visibility.
Addition of @public for overriding default visibility.
Default visibility can be overridden per module compile unit. Eg module foo @private.
Optimized macro codegen for -O0.
Addition of unary +.
Remove possibility to elide length when using ':' for slices.
Remove the : and ; used in $if, $switch etc.
Faults have an ordinal.
Generic module contracts.
Type inference on enum comparisons, e.g foo_enum == ABC.
Allow {} to initialize basic types.
String literals default to String.
More const modification detection.
C3L zip support.
Support printing object files.
Downloading of libraries using vendor "fetch".
Structural casts removed.
Added "native" option for vector capability.
$$shufflevector replaced with $$swizzle and $$swizzle2.
Builtin swizzle accessors.
Lambdas, e.g a = int(x, y) => x + y.
$$FILEPATH builtin constant.
variant renamed any.
anyerr renamed anyfault.
Added $$wasm_memory_size and $$wasm_memory_grow builtins.
Add "link-args" for project.
Possible to suppress entry points using --no-entry.
Added memory-env option.
Use the .wasm extension on WASM binaries.
Update precedence clarification rules for ^|&.
Support for casting any expression to void.
Win 32-bit processor target removed.
Insert null-check for contracts declaring & params.
Support user defined attributes in generic modules.
--strip-unused directive for small binaries.
$$atomic_store and $$atomic_load added.
usz/isz replaces usize and isize.
@export attribute to determine what is visible in precompiled libraries.
Disallow obviously wrong code returning a pointer to a stack variable.
Add &^| operations for bitstructs.
@noinit replaces = void to opt-out of implicit zeroing.
Multiple declarations are now allowed in most places, eg int a, b;.
Allow simplified (boolean) bitstruct definitions.
Allow @test to be placed on module declarations.
Updated name mangling for non-exports.
defer catch and defer try statements added.
Better errors from $assert.
@deprecated attribute added.
Allow complex array length inference, eg int[*][2][*] a = ....
Cleanup of cast code.
Removal of generic keyword.
Remove implicit cast enum <-> int.
Allow enums to use a distinct type as the backing type.
Update addition and subtraction on enums.
@ensure checks only non-optional results.
assert may now take varargs for formatting.

Stdlib changes

Tracking allocator with location.
init_new/init_temp for allocating init methods.
DString.printf is now DString.appendf.
Tuple and Maybe types.
.as_str() replaced by .str_view()
Added math::log(x , base) and math::ln(x).
Hashmap keys implicitly copied if copy/free are defined.
Socket handling.
csv package.
Many random functions.
Updated posix/win32 stdlib namespacing
process stdlib
Stdlib updates to string.
Many additions to List: remove, array_view, add_all, compact etc
Added dstringwriter.
Improved printf formatting.
is_finite/is_nam/is_inf added.
OnStack allocator to easily allocate a stack buffer.
File enhancements: mkdir, rmdir, chdir.
Path type for file path handling.
Distinct String type.
VarString replaced by DString.
Removal of std::core::str.
JSON parser and general Object type.
Addition of EnumMap.
RC4 crypto.
Matrix identity macros.
compare_exchange added.
printfln and println renamed printfn and printn.
Support of roundeven.
Added easings.
Updated complex/matrix, added quaternion maths.
Improved support for freestanding.
Improved windows main support, with @winmain annotations.
SimpleHeapAllocator added.
Added win32 standard types.
Added saturated math.
Added @expect, @unlikely and @likely macros.
Temp allocator uses memory-env to determine starting size.
Temp allocator is now accessed using mem::temp(), heap allocator using allocator::heap().
Float parsing added.
Additions to std::net, ipv4/ipv6 parsing.
Stream api.
Random api.
Sha1 hash function.
Extended enumset functionality.
Updated malloc/calloc/realloc/free removing old helper functions.
Added TrackingAllocator.
Add checks to prevent incorrect alignment on malloc.
Updated clamp.
Added Clock and DateTime.
Added posix socket functions.

Fixes

Structs returned from macros and then indexed into directly could previously be miscompiled.
Naked functions now correctly handles asm.
Indexing into arrays would not always widen the index safely.
Macros with implicit return didn't correctly deduct the return type.
Reevaluating a bitstruct (due to checked) would break.
Fix missing comparison between any.
Fix issue of designated initializers containing bitstructs.
Fix issue of designated initializers that had optional arguments.
Fixed ++ and -- for bitstructs.
Fix to bug where library source files were sometimes ignored.
Types of arrays and vectors are consistently checked to be valid.
Anonymous bitstructs check of duplicate member names fixed.
Assignment to anonymous bitstruct members in structs.
Fix casts on empty initializers.
Fix to DString reserve.
Fix where aliases did not do arithmetic promotion.
@local declarations in generic modules available by accident.
Fixes missing checks to body arguments.
Do not create debug declaration for value-only parameter.
Bug in alignment for atomics.
Fix to bug when comparing nested arrays.
Fix to bug when a macro is using rethrow.
Fixes bug initializing a const struct with a const struct value.
Fixes bug when void is passed to an "any"-vararg.
Fixed defer/return value ordering in certain cases.
Fixes to the x64 ABI.
Updates to how variadics are implemented.
Fixes to shift checks.
Fixes to string parsing.
Bug when rethrowing an optional from a macro which didn't return an optional.
Fixed issues with ranged cases.
Disallow trailing ',' in function parameter list.
Fixed errors on flexible array slices.
Fix of readdir issues on macOS.
Fix to slice assignment of distinct types.
Fix of issue casting slices to distinct types.
Fixes to split, rindex_of.
List no longer uses the temp allocator by default.
Remove test global when not in test mode.
Fix sum/product on floats.
Fix error on void! return of macros.
Removed too permissive casts on slices.
Using C files correctly places objects in the build folder.
Fix of overaligned deref.
Fix negating a float vector.
Fix where $typeof(x) { ... } would not be a valid compound literal.
Fix so that using var in if (var x = ...) works correctly.
Fix int[] -> void* casts.
Fix in utf8to16 conversions.
Updated builtin checking.
Reduce formatter register memory usage.
Fixes to the "any" type.
Fix bug in associated values.
More RISC-V tests and fixes to the ABI.
Fix issue with hex floats assumed being double despite f suffix.
Fix of the tan function.
Fixes to the aarch64 ABI when passing invalid vectors.
Fix creating typed compile time variables.
Fix bug in !floatval codegen.
Fix of visibility issues for generic methods.
Fixes to $include.
Fix of LLVM codegen for optionals in certain cases.
Fix of $vasplat when invoked repeatedly.
Fix to $$DATE.
Fix of attributes on nested bitstructs.
Fix comparing const values > 64 bits.
Defer now correctly invoked in expressions like return a > 0 ? Foo.ABC! : 1.
Fix conversion in if (int x = foo()).
Delay C ABI lowering until requested to prevent circular dependencies.
Fix issue with decls accidentally invalidated during $checked eval.
Fold optional when casting slice to pointer.
Fixed issue when using named arguments after varargs.
Fix bug initializing nested struct/unions.
Fix of bool -> vector cast.
Correctly widen C style varargs for distinct types and optionals.
Fix of too aggressive codegen in ternary codegen with array indexing.

0.4.0 Change List

Compatibility with LLVM 16.
Dropped LLVM 12 support.
Updated vector comparisons.
Built in unit testing with @test and compile-test
Updated memory allocators. Added @scoped and @pool macros.
Various bug fixes.
Generic modules may now be generic over integers and booleans.
Constant pointers may be compile time evaluated.
Added many new builtins.
Emit asm using --emit-asm.
Added --nostdlib and --nolibc.
Compiling for AVX can now select "native".
Fixes to adding libraries at link time.
Various improved error messages.
Windows debug info fixes.
Add of foreach_r for reverse list traversal.
Script downloading the MSVC SDK to cross compile to windows.
Many standard library additions.
Extension methods may be added for built-in types.
Macros may take vector and array arguments generic over length.
Macro varargs with $vaarg, $vacount etc.
Many vector builtins added as dot methods.
in / out / inout doc parameters checked.
Initial inline asm support for aarch64 and x64.
Single line short function declaration.
Added $checks builtin.
Added $include builtin for including other text files.
Optional single module compilation.
Static initialization / finalization to have code running at start/end.
C3 custom printf function in the stdlib.
[]= overload now works correctly.
Static libraries may now be built.
More compile time reflection added and general cleanup done.
usize/isize/iptrdiff/uptrdiff replaced by usz/isz.
Add var to allow type inference on regular variables.
LLVM codegen optimizations.
?? now allows chaining another optional.
int128 support on all platforms.
import is now allowed anywhere at the top level.
project.c3p renamed project.json
Update to project properties, e.g. "libs" -> "dependencies" etc.
$$TIME, $$DATE and $$FUNCTION builtin defines added.
$echo function to print messages at compile time.
Improvements to untyped lists.
Various builtins added: $$prefetch, $$reverse, $$shufflevector etc.

0.3.0 Change List

Changes / improvements:

Allow any expression as default expression.
Allow using enums for indexing arrays.
Added $convertable / $castable compile time functions.
Removed ´func´ deprecated keyword
Slicing a distinct type now returns the distinct type.
Renamed @autoimport -> @builtin
Zero length arrays not allowed
Allow methods may use ref, pointer and value arguments as "self"
Updated external name mangling
More advanced introspection.
@maydiscard and @nodiscard annotations
New type promotion rules: The common type of int[x]* and int[y]* is int[]
Added type.inner and type.len reflection.
Support float mod operations.
Add float.max/min.
Allow [in] contract to be used on slices.
Add linker and linked dir arguments to build files.
Auto-import std::core.
LLVM 15 support.
Beter native file handling for MSVC
New import rules – recursive imports
Add lld linking for FreeBSD
User defined attributes. @Foo = @inline
Support enum associated values.
@ is now part of the name of an attribute or a macro. Macros without '@' must be function-like.
Ordinal based enums.
Allow locals to shadow global variables.
Prefer inferred constant over global in the case of MyEnum f = BAR;
Enum and fault name reflection.
Deref null error now panics in safe mode.

Changes to stdlib:

Updated allocators.
Added enum_by_name.
Moved bitcast to builtin module.
Native printf for files and strings.
Updated String.
Comparison macros
Added Binary-Heap Based Priority Queue by David Kopec
Matrix Math Library by PixelRifts
UTF conversions in "conv" module.

Fixes:

Attributes correctly checks for recursive definitions now.
Added a max bitstruct size.
Fix of expr location in args.
Fixing distinct, typedef and bitstruct copying. Fix where global constants did not need to be constant.
Better error on all upper parameter names.
Fix constant typeid comparisons.
Simplify and corrected if try/catch parsing.
Fix bug with { [A] = 1 }
Conversion unsigned int -> enum fixed.
Fix bug preventing implicit & on optionals.
More efficient int[] a = {}
Fix bug in extension methods for generic types and typedefs
Fix to extension methods in other modules.
Disallow complist as a regular macro parameter.
Fix in nested block handling
Fix of error where {| |} with value return could have no final return
Vararg abi fix
Fix "libs" in project creation
Fix bug with bit struct initialization and zeros
Reduce size of memory pages used.
Fix issues with union of const.
Fix initialization of anonymous structs.
Fix conversion between distinct void* and null
Fix of default project creation target format.
Fix of $sizeof(Type) => Type.sizeof
Fix stack setting after error return.
Fix module assignment of declarations
Global @align fixed
Fixes enum set with new ordinal based enums
SysV ABI fix for passing certain things by struct.
Fix implicitly converting to float in the case of myfloat *= -1

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