Digital Mars C/C++ Version Info

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• What's new for C/C++ 8.1A
• What's new for C/C++ 8.18
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• What's new for C/C++ 8.12
• What's new for C/C++ 8.10
• What's new for C/C++ 8.0
• What's new for C/C++ 7.6
• What's new for C/C++ 7.5

• Fixed internal error cg87 2490.
• Fixed gp fault for nested template expansions with non-type args.
• Added predefined macro __DMC_VERSION_STRING__.
• Implemented boolean conversions per C++98 4.12.
• Upgraded namespace support to C++98.
• Implemented overloading by enum.
• Implemented Argument Dependent Lookup.
• Implemented friend namespace qualified classes.
• Fixed operator bool conversions.
• C99 restrict is now always on for C compiling.
• C99 dynamic sizeof works.
• Fixed numerous bugs with namespaces and templates.
• Redid how macro expansion worked to bring it in line with C99. This can break existing code.
• operator->() can now accept any return type.
• Added \dm\include\wctype.h.
• Implemented template explicit instantiation.
• Implemented _finddata_t, _findfirst, _findnext, _findclose.
• Fixed obscure crash bug in exception unwinding.

• Bugs fixed
  • Fixed bug with nested class member templates.
  • Fixed bug with inline asm and LGDT/LIDT operand matching.
• Make 5.02
  • Now accepts ~ rule flag.
  • Command line length increased from 127 to 996.

• C
  • static and type-qualifier-list now supported for array dimension per C99 6.7.5.2.
  • Variable length arrays (VLAs) per C99 6.7.5.2 now implemented.
  • Implemented declarations in clause-I of for statement per C99 6.8.5.3.
  • Implemented mixing statements and declarations per C99 6.8.2-1.
  • Implemented implicit return 0; from main() per C99 5.1.2.2.3.
  • Updated fenv.h functions per C99 7.6.
• C++
  • Extended C++ with support for array declarations per C99 6.7.5.2.
  • Added type_info to typeinfo.h.
• C and C++
  • __declspec(import) now works with DOSX (-mx) memory model by generating an extra level of indirection like under Win32.
• Bugs fixed
  • Fixed internal error cgcod 2347.
  • Fixed internal error cgcod 1402.
  • Fixed internal error cg87 268.
  • Fixed internal error exp2 121.
  • Fixed internal error newman 963.
  • Fixed problem with template overload resolution.
  • Fixed forward template instantiation bug.
  • Fixed partial ordering with constants.

• C++
  • Implemented member template functions.
  • Implemented member template classes.
  • Implemented class template partial specializations.
  • Implemented partial ordering of class template specializations.
  • Implemented class template explicit specializations.
  • Implemented template friends.
  • Implemented new C++ 98 for statement scoping rules. This can be disabled with -A- (for backwards compatibility with old code), and then re-enabled with -As.
  • For C++, changed 3rd operand of conditional operator from a conditional-expression to an assignment-expression. There is no switch to revert to the old behavior.
  • Operator delete can now take cv-qualified pointers.
  • main() now defaults to return 0; if no return is specified.
  • Implemented function try blocks.
  • Function templates instantiations that match non-template function declarations are now distinct functions. This can break some existing code, but the source fixes are worth doing to be standard compliant. Function template instantiations now include the template-argument-list as part of the function signature.
  • Added -wc switch which warns on every occurance of a C style cast which should be replaced with the appropriate C++ style cast.
  • Mangled names can now be considerably longer.
  • Added STLport 4.5.3.
  • Fixed el 2005 bug
• C and C++
  • Implemented universal character names for strings and character literals.
  • Fixed iasm 2585 bug
  • Fixed error parsing REP MOVSD/CMPSD instructions
  • Unrecognized preprocessing directives are now ignored in false conditionals (previously, an error was issued). -A will cause them to be an error.
  • Fixed problem with -s stack probes in 16 bit code.
  • Non-existing directories are now created as necessary when writing output files. This is convenient when writing .obj files to temporary directories.

• Added empty base class optimization.
• Added -Jb compiler switch to disable empty base class optimization for compatibility with code compiled with earlier compilers.
• Fixed cgobj 3034 bug
• Fixed cg87 256 bug
• Added:
  #pragma DMC mfc
  for compatibility with MFC 4.2.
• Added -Aa- for compatibility with MFC 4.2.
• Empty array members of structs, such as:
  char string[];
  are now aligned based on the array subtype, rather than the widest type.
• Fixed bug with unsigned to double conversion.
• Fixed problem with handle passed to DllMain().

• Renamed dm\include\strstrea.h to dm\include\strstream.h
• Fixed problem with disp_cursorcol and standout mode in win32 version
• Fixed bug with inline asm and copy propagation
• Fixed eh 683 bug
• Fixed cod1 1278 bug
• Fixed cg87 217 bug
• Now aligns double autos for faster floating point execution
• Added inline assembler support for Intel SSE and SSE2 instructions
• Added inline assembler support for AMD 3DNOW! instructions
• Added new instructions to OBJ2ASM disassembler

• Added \dm\include\zmouse.h
• Fixed bug in float.h
• Improved code generation for long long's.
• Fixed long double conversions and unsigned long long's.
• Fixed tentative definition bug.

• Added MicroEmacs text editor.
• Fixed IDDE Resource Editor.
• Fixed startup code to be compatible with D.

• Fixed bugs with 16 bit code generation.

• Fixed eh 682 bug.
• Fixes for problems with template instantiation and exception handling.

• Fixed problems with C, -A, preprocessor, and //.
• Fixed dos_setdrive() bug for win32.
• Fix for _inpw() and _outpw() for DOSX.

For C:

• Increased max string length.
• Fixed cg87 263 error.

• Fixed bug with -D_MT and STL.
• Fixed template expansion bug with array constructors.

• Fixed stl_config.h conflict with windows.h

• Fixed bug in _kbhit() for Win32.

• Added SGI STL 3.3. Numerous fixes to support it.
• Templates are now instantiated only when semantically required, rather than whenever referred to.
• Added header files cassert, cctype, cerrno, cfloat, ciso646, climits, clocale, cmath, csetjmp, csignal, cstdarg, cstddef, cstdio, cstdlib, cstring, ctime, cwchar, cwctype, new.
• Fixed C++ declarations for strchr(), etc., per C++98 21.4.
• Fixed warnings about 0 sized structs used before set.
• Fixed default constructor bug with new(p) char().
• Fixed unused operator->() expansion inside template spurious error.
• In-class static const integral initializers now supported.
• Fixed default template parameter bug.

• -Ab and -Aw are now always on (meaning that bool and wchar_t are real types, not typedefs). Warning: This can break existing code.
• -Aa is now always on (meaning that operator new[] and operator delete[] are separately overloadable) Warning: This can break existing code.
• parameter-declarations now allowed in function template template-parameter-list.
• typename can now appear in template-parameter instead of class.
• Explicit template function template-arguments implemented.
• Partial ordering of function templates implemented.
• elaborated-type-specifier (i.e. typename) implemented.
• mutable implemented.
• explicit implemented.

• Fixed code gen bug with -Ab.
• Fixed name mangling with complex floating point types.
• Fixed code gen bug with complex floating point types.
• stdlib.h now compiles with -A.
• Added util.h.

• Regular Expressions now added to runtime library.
• Fixed code gen bugs with __interrupt functions.
• rint functions are now inlined by the compiler.
• fabsl and sqrtl are now inlined by the compiler.
• Fixed bug with /= for long doubles.
• Fixed long long support in library.
• Improved long double support in library.

• Name mangling for type bool is changed from _X to _N, in order to be more compatible with VC.
• Literal float support has now been brought in line with ANSI C99.
• Floating point constants for other than static initializations are not folded if the folding would result in any exception flags being raised. This is per C99. To always fold the constants anyway, use the -ff (fast float) flag.
• Fixed problems with hex long doubles.

• Hex floats no longer turned off by -A.
• Long longs no longer turned off by -A.
• // comments in C no longer turned off by -A.
• The default CPU target is now the Pentium Pro (-6), not the Pentium.

• Fixed problem with dllexport on function pointers.
• Added gc.h
• Added Hans Boehm garbage collector to rtl
• Added long double, %a and %A support to printf for win32

• Fixed 16 bit code gen bugs.
• Added iso646.h
• Added stdint.h
• Added stdbool.h
• Added va_copy() to stdarg.h
• Added isxxxx() floating point comparison macros to math.h

• Fixed spurious syntax error compiling some MFC code.

• Now with 32 bit X32 DOS extender support!
• Fixed code generator support for X32.

• Changed __i keyword to __imaginary due to numerous conflicts with existing code.

• Added support for __restrict pointer syntax.
• Added support for macros with variable & blank argument lists per C99.
• Added support for __func__ per C99 6.4.2.2.
• Added __FUNCTION__ predefined macro.
• Added __PRETTY_FUNCTION__ predefined macro.
• Fixed bug in wcscmp() for 0 length strings.
• -Aa switch to SC is now the default. There is no way to turn it off.
• Added _Complex and _Imaginary type support per C99.
• Renamed C++ complex class file complex.h to oldcomplex.h.
• Added new complex.h per C99.
• Added complex library functions per C99.
• Added isinf() per C99.
• Added long double support to isxxx() functions in fp.h.

• Added __DMC__ predefined macro.
• Added -d switch to generate make dependency information.
• Added debug statements.
• Added debug declarations.
• Added design by contract features.
• Added ability to embed C in HTML files.
• Added native support for 80 bit long doubles (Win32 only).
• Added support for CPU bit instructions via functions in bitops.h.
• Switch -mn is now the default instead of -ms.
• 16 bit preprocessor spp.exe no longer supported - use sppn.exe.

• Better Code Generation
• Merged C and C++ Compilers. They are now in the same executable. This saves disk space and testing time.

Added MMX Extensions

	New Intel MMX instructions now supported by the inline assembler.

Added Support for Alternative Names

	With -A and the C++ compiler, the alternative representations
	in the standard 2.9 are now supported. In the future, they will
	become the default, so don't use the following names otherwise:
	and and_eq bitand bitor compl not
	not_eq or or_eq xor xor_eq

Added -B[e|f|g|j] switches

	See "Definitive list of SC switches" for how they work. 
	The SCMSGS environment variable and SC.INI setting is no 
	longer supported.

Added #elseif directive, with same semantics as #elif.

Changed overload resolution rules to reflect ANSI C++ standard changes
regarding integral promotions vs integral conversions.

Added namespaces

Added -g5 switch
	See "Definitive list of SC switches".

Added #pragma setlocale("locale")
	See "Pragmas supported by SC/SC++".

Added _CPPRTTI and _CPPUNWIND predefined macros
	See "Predefined macros".

Added New Keywords
	explicit, mutable, typename - but the semantics of them aren't
	implemented.

Added __unaligned Keyword
	For unaligned pointer support for PowerPC. Ignored for Intel
	compiler.

Added Pentium Pro Instructions to Inline Assembler and OBJ2ASM.
	Added new P6 instructions:
		CMOVcc
		FCMOVcc
		FCOMI
		FCOMIP
		FUCOMI
		FUCOMIP
		RDMPC

Added -ND switch
	See "DEFINITIVE LIST OF SC SWITCHES", 
	and _MT and _DLL in "PREDEFINED MACROS".

-NLlibfile
	Added this switch. See "DEFINITIVE LIST OF SC SWITCHES".

__wacrtused
__wacrtused_con
	Added these for use in Win32 UNICODE apps. See "ACRTUSED".

by Walter Bright
Copyright (c) 1997-2002 by Digital Mars. All Rights Reserved.