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C3C Release Notes

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.

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

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.

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