Orange C version 7.0.1

This release adds full support for C++17 and C23. The MSIL compiler is updated to work with .NET core now. It also removes the legacy MSDOS support. There are also reorganizations of the source files and build process.

Here is a list of things that have changed since the last release.

• project: make updates so that it would compile with g++15
• project: full support for C++17
• project: update libcxx to libcxx 17
• project: finish supporting C23 (adds #embed to previous functionality)
• project: remove DOS32 support
• project: remove COFF2IEEE
• project: fix the VS project to work more reliably
• project: enable building with the C++17 version of the compiler
• project: add git actions to build checkins with MSVC and GCC
• project: occil supports .NET core
• project: make adjustments so that compiling OCC with the 64-bit MSVC results in a working compiler
• project: many source code improvements
• occ: find bugs by compiling 3rd-party programs
• occ: fix templated lambdas to not strip qualifiers and references when making the template variables
• occ: fix problems with code generation for dfault copy constructors for unions
• occ: fix problems where a default constructor dragged in via USING statement could generate infinite recursion
• occ: fix minor problems with template argument deduction
• occ: improve support for constexpr functions
• occ: improve how template unpacking is done and the error generation for it
• occ: improve command line documentation
• occ: check the C++ standards conformance now
• occ: fix problems where 'extern inline' did not result in a function body in C++ mode
• occ: fix problems with auto-sizing of enumerations (0x80000000 did not fit in an unsigned long)
• occ: fix bug in raw string processing: empty lines where handled correctly
• occ: assignment of a pair to a tuple didn't work
• occ: fix bug in the numeric constant evaluator, an expression that was order-dependent was free to be reordered
• occ: have the lexer treat the token '0' as a signed integer
• occ: sometimes the lexer would return the wrong integer type
• occ: add '#pragma GCC system_header' functionality
• occ: add new intrinsics to support libcxx 17
• occ: fix bug when calculating the size for structures being returned from a function
• occ: fix various crashes when compiling with other compilers and put asserts in so they can be detected when debugging
• occ: give some variables better names, start refactoring things to be more C++ friendly
• occ: fix some bugs with the debug info
• occ: add alternate methods for declaring thread local storage
• occ: when instantiating an array in an expression, return its address not its first element
• occ: when instantiating a structure in an expression, handle bit fields appropriately
• occ: an undefined union type was not expanded to its actual type
• occ: forward reference of structures referenced indirectly through templates in typedefs did not always work
• occ: names with dots could not have an extension added to them when automatically generating output file names
• occ: defer template instantiation in some instances
• occ: fix some visibility problems with protected and private
• occ: move a bunch of functions into more sensible modules
• occ: minor work to not crash on Linux
• occ: (0, (struct nn)b) was not treated as an lvalue for assignment purposes
• occ: fix some problems with transferring the intermediate code to the file, optimize the transfer
• occ: fix global unions and also allow them at function scope
• occ: fix some bugs with not calling CAST operators from classes often enough
• occ: when a function argument is a function pointer, resolve it to the correct overload before doing type checking
• occ: fix some problems with the discovery of what type 'auto' should resolve to
• occ: ("asdf") is a valid string initializer
• occ: raw string parsing was broken in various ways
• occ: when evaluating a hook, resolve the C++ function pointers to the correct overloads
• occ: improve diagnostics when an assembly language instruction cannot be assembled
• occ: fix floating point truncate, it lost a bit
• occ: fix various vagaries when using decltype
• occ: fix some problems with overload resolution
• occ: fix bug where lambda structures could have zero length
• occ: fix captured 'this' in lambda expressions to work properly
• occ: add type checking for exception specifier part of function types
• occ: fix bug where duplicate structure member was not flagged
• occ: bug fixes to integer template arguments
• occ: optimize the lazy optimizer a bit
• occ: fix range-based for when the range is a bracketed list of initializers
• occ fix optimizers problems with strength reduction optimization
• occ: fix various programs that crashed
• occ: fix various programs that didn't compile
• occ: code generation for bit test operations could wipe unrelated registers
• occ: support export_all_symbols fully
• occ: code generation for a div could assume EAX was preserved (it isn't)
• occ: fix optimization of bit fields to work better
• occ: fix compiler bug to value initialize when a constructor was specifically declared as default
• occ: logical and math operations where the arguments are identical enums, resulted in a conversion to int.
• occ: fix compiler bugs so that the c++17 filesystem library works
• occ: can now partially optimize functions that have inline assembly (but they can't be inlined)
• occ: fix name unmangling for templated cast operators to work better
• occ: fix other bugs with name unmangling
• occil: could generate virtual BSS data in MSIL code
• occil: optimize locals better
• occil: default code generation is CONSOLE apps
• occil: compile latest SQLite with occil (as of September 2023)
• ocpp: fix has_include and has_include_next to work reliably
• ocpp: source code cleanup, change some #defines to typedefs
• occ, ocpp: make stub generation should go to stdout unless something else is specified
• occ, ocpp: add FUNCTION to preprocessor
• occ, ocpp: add named varargs macro extension
• olib: fix case sensitivy handling for symbols
• olib: fix bugs with extract command
• olib: support unitialized BSS virtual sections
• olib: detect libraries that are not formatted correctly
• olink: support uninitialized BSS virtual sections
• olink: ignore common MSVC import libraries if specified on the command linefix
• onm: don't consider onm itself as an input file
• omake: improve builds by not having potentially hundreds of omake instances waiting for something to do
• omake: fix compiler bug that caused omake to crash randomly when compiled with occ
• orc: was unable to specify an output file
• dlpe: add symbols for missing publics (for virtual bss code generation)
• gccocc: allow space between -o and the parameter
• libocc: copy output file with an extension of .lib
• oasm: .text and .data sections could switch to 16 bits when using section directives
• oasm: fix gas 'jmp *%reg' instruction to work properly
• rtl: add _TRUNCATE
• rtl: add a few const qualifiers to wide string functions they were missing in
• rtl: fix some problems with WIN32 headers not appearing in ZIP files...
• rtl: add basic math functions to the C RTL, lgamma related
• rtl: support 'filesystem' and 'variant' headers
• rtl: fix name unmangling in lscrtl
• rtl: a couple of math functions weren't available in lscrtl.dll
• rtl: fix import library support for winsock
• rtl: add ws2_32.dll to the import library support
• rtl: use bottom-up allocation with the lea allocator and use MEM_RESERVE
• rtl: typeino header needed a hash_code function
• rtl: updates to winbase.h
• rtl: add wide character functions for directory name parsing
• rtl: fix compiler bugs to allow multimap.insert to compile
• build: sqlite3.l would sometimes be confused for a lexer input file
• build: don't put multiple msvc project files in same directory
• build: fix make the docs configuration file
• build: fix bugs that made appveyor build fail randomly