635 lines
24 KiB
Plaintext
635 lines
24 KiB
Plaintext
Objective Caml 2.00:
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--------------------
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* Language:
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- New class language. See http://caml.inria.fr/ocaml/refman/
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for a tutorial (chapter 2) and for the reference manual (section 4.9).
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- Local module definitions "let module X = <module-expr> in <expr>".
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- Record copying with update "{r with lbl1 = expr1; ...}".
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- Array patterns "[|pat1; ...;patN|]" in pattern-matchings.
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- New reserved keywords: "object", "initializer".
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- No longer reserved: "closed", "protected".
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* Bytecode compiler:
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- Use the same compact memory representations for float arrays, float
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records and recursive closures as the native-code compiler.
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- More type-dependent optimizations.
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- Added the -use_runtime and -make_runtime flags to build separately
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and reuse afterwards custom runtime systems
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(inspired by Fabrice Le Fessant's patch).
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* Native-code compiler:
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- Cross-module constant propagation of integer constants.
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- More type-dependent optimizations.
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- More compact code generated for "let rec" over data structures.
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- Better code generated for "for" loops (test at bottom of code).
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- More aggressive scheduling of stores.
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- Added -p option for time profiling with gprof
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(fully supported on Intel x86/Linux and Alpha/Digital Unix only)
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(inspired by Aleksey Nogin's patch).
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- A case of bad spilling with high register pressure fixed.
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- Fixed GC bug when GC called from C without active Caml code.
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- Alpha: $gp handling revised to follow Alpha's standard conventions,
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allow running "atom" and "pixie" on ocamlopt-generated binaries.
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- Intel x86: use movzbl and movsbl systematically to load 8-bit and 16-bit
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quantities, no more hacks with partial registers (better for the
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Pentium Pro, worse for the Pentium).
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- PowerPC: more aggressive scheduling of return address reloading.
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- Sparc: scheduling bug related to register pairs fixed.
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* Runtime system:
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- Better printing of uncaught exceptions (print a fully qualified
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name whenever possible).
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* New ports:
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- Cray T3E (bytecode only) (in collaboration with CEA).
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- PowerMac under Rhapsody.
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- SparcStations under Linux.
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* Standard library:
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- Added set_binary_mode_in and set_binary_mode_out in Pervasives
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to toggle open channels between text and binary modes.
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- output_value and input_value check that the given channel is in
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binary mode.
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- input_value no longer fails on very large marshalled data (> 16 Mbytes).
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- Module Arg: added option Rest.
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- Module Filename: temp_file no longer loops if temp dir doesn't exist.
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- Module List: added rev_append (tail-rec alternative to @).
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- Module Set: tell the truth about "elements" returning a sorted list;
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added min_elt, max_elt, singleton.
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- Module Sys: added Sys.time for simple measuring of CPU time.
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* ocamllex:
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- Check for overflow when generating the tables for the automaton.
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- Error messages in generated .ml file now point to .mll source.
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- Added "let <id> = <regexp>" to name regular expressions
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(inspired by Christian Lindig's patch).
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* ocamlyacc:
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- Better error recovery in presence of EOF tokens.
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- Error messages in generated .ml file now point to .mly source.
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- Generated .ml file now type-safe even without the generated .mli file.
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* The Unix library:
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- Use float instead of int to represent Unix times (number of seconds
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from the epoch). This fixes a year 2005 problem on 32-bit platforms.
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Functions affected: stat, lstat, fstat, time, gmtime, localtime,
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mktime, utimes.
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- Added putenv.
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- Better handling of "unknown" error codes (EUNKNOWNERR).
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- Fixed endianness bug in getservbyport.
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- win32unix (the Win32 implementation of the Unix library) now has
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the same interface as the unix implementation, this allows exchange
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of compiled .cmo and .cmi files between Unix and Win32.
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* The thread libraries:
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- Bytecode threads: bug with escaping exceptions fixed.
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- System threads (POSIX, Win32): malloc/free bug fixed; signal bug fixed.
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- Both: added Thread.wait_signal to wait synchronously for signals.
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* The graph library: bigger color cache.
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* The str library: added Str.quote, Str.regexp_string,
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Str.regexp_string_case_fold.
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* Emacs mode:
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- Fixed bug with paragraph fill.
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- Fixed bug with next-error under Emacs 20.
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Objective Caml 1.07:
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--------------------
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* Native-code compiler:
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- Revised interface between generated code and GC, fixes serious GC
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problems with signals and native threads.
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- Added "-thread" option for compatibility with ocamlc.
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* Debugger: correctly print instance variables of objects.
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* Run-time system: ported to OpenBSD.
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* Standard library: fixed wrong interface for Marshal.to_buffer and
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Obj.unmarshal.
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* Num library: added Intel x86 optimized asm code (courtesy of
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Bernard Serpette).
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* Thread libraries:
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- Native threads: fixed GC bugs and installation procedure.
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- Bytecode threads: fixed problem with "Marshal" module.
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- Both: added Event.always.
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* MS Windows port: better handling of long command lines in Sys.command
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Objective Caml 1.06:
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--------------------
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* Language:
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- Added two new keywords: "assert" (check assertion) and "lazy"
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(delay evaluation).
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- Allow identifiers to start with "_" (such identifiers are treated
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as lowercase idents).
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* Objects:
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- Added "protected" methods (visible only from subclasses, can be hidden
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in class type declared in module signature).
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- Objects can be compared using generic comparison functions.
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- Fixed compilation of partial application of object constructors.
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* Type system:
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- Occur-check now more strict (all recursions must traverse an object).
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- A few bugs fixed.
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* Run-time system:
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- A heap compactor was implemented, so long-running programs can now
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fight fragmentation.
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- The meaning of the "space_overhead" parameter has changed.
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- The macros Push_roots and Pop_roots are superseded by Begin_roots* and
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End_roots.
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- Bytecode executable includes list of primitives used, avoids crashes
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on version mismatch.
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- Reduced startup overhead for marshalling, much faster marshalling of
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small objects.
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- New exception Stack_overflow distinct from Out_of_memory.
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- Maximum stack size configurable.
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- I/O revised for compatibility with compactor and with native threads.
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- All C code ANSIfied (new-style function declarations, etc).
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- Threaded code work on all 64-bit processors, not just Alpha/Digital Unix.
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- Better printing of uncaught exceptions.
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* Both compilers:
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- Parsing: more detailed reporting of syntax errors (e.g. shows
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unmatched opening parenthesis on missing closing parenthesis).
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- Check consistency between interfaces (.cmi).
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- Revised rules for determining dependencies between modules.
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- Options "-verbose" for printing calls to C compiler, "-noassert"
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for turning assertion checks off.
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* Native-code compiler:
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- Machine-dependent parts rewritten using inheritance instead of
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parameterized modules.
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- GC bug in value let rec fixed.
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- Port to Linux/Alpha.
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- Sparc: cleaned up use of %g registers, now compatible with Solaris threads.
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* Top-level interactive system:
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- Can execute Caml script files given on command line.
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- Reads commands from ./.ocamlinit on startup.
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- Now thread-compatible.
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* Standard library:
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- New library module: Lazy (delayed computations).
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- New library module: Marshal. Allows marshalling to strings and
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transmission of closures between identical programs (SPMD parallelism).
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- Filename: "is_absolute" is superseded by "is_implicit" and "is_relative".
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To adapt old programs, change "is_absolute x" to "not (is_implicit x)"
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(but the new "is_relative" is NOT the opposite of the old "is_absolute").
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- Array, Hashtbl, List, Map, Queue, Set, Stack, Stream:
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the "iter" functions now take as argument a unit-returning function.
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- Format: added "printf" interface to the formatter (see the documentation).
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Revised behaviour of simple boxes: no more than one new line is output
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when consecutive break hints should lead to multiple line breaks.
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- Stream: revised implementation, renamed Parse_failure to Failure and
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Parse_error to Error (don't you love gratuitous changes?).
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- String: added index, rindex, index_from, rindex_from.
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- Array: added mapi, iteri, fold_left, fold_right, init.
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- Added Map.map, Set.subset, Printexc.to_string.
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* ocamllex: lexers generated by ocamllex can now handle all characters,
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including '\000'.
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* ocamlyacc: fixed bug with function closures returned by parser rules.
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* Debugger:
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- Revised generation of events.
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- Break on function entrance.
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- New commands start/previous.
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- The command loadprinter now try to recursively load required
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modules.
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- Numerous small fixes.
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* External libraries:
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- systhreads: can now use POSIX threads; POSIX and Win32 threads are
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now supported by the native-code compiler.
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- dbm and graph: work in native code.
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- num: fixed bug in Nat.nat_of_string.
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- str: fixed deallocation bug with case folding.
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- win32unix: use Win32 handles instead of (buggy) VC++ emulation of Unix
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file handles; added gettimeofday.
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* Emacs editing mode and debugger interface updated to July '97 version.
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Objective Caml 1.05:
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--------------------
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* Typing: fixed several bugs causing spurious type errors.
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* Native-code compiler: fixed instruction selection bug causing GC to
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see ill-formed pointers; fixed callbacks to support invocation from a
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main program in C.
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* Standard library: fixed String.lowercase; Weak now resists integers.
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* Toplevel: multiple phrases without intermediate ";;" now really supported;
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fixed value printing problems where the wrong printer was selected.
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* Debugger: fixed printing problem with local references; revised
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handling of checkpoints; various other small fixes.
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* Macintosh port: fixed signed division problem in bytecomp/emitcode.ml
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Objective Caml 1.04:
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--------------------
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* Replay debugger ported from Caml Light; added debugger support in
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compiler (option -g) and runtime system. Debugger is alpha-quality
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and needs testing.
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* Parsing:
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- Support for "# linenum" directives.
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- At toplevel, allow several phrases without intermediate ";;".
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* Typing:
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- Allow constraints on datatype parameters, e.g.
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type 'a foo = ... constraint 'a = 'b * 'c.
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- Fixed bug in signature matching in presence of free type variables '_a.
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- Extensive cleanup of internals of type inference.
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* Native-code compilation:
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- Inlining of small functions at point of call (fairly conservative).
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- MIPS code generator ported to SGI IRIX 6.
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- Better code generated for large integer constants.
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- Check for urgent GC when allocating large objects in major heap.
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- PowerPC port: better scheduling, reduced TOC consumption.
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- HPPA port: handle long conditional branches gracefully,
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several span-dependent bugs fixed.
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* Standard library:
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- More floating-point functions (all ANSI C float functions now available).
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- Hashtbl: added functorial interface (allow providing own equality
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and hash functions); rehash when resizing, avoid memory leak on
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Hashtbl.remove.
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- Added Char.uppercase, Char.lowercase, String.uppercase, String.lowercase,
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String.capitalize, String.uncapitalize.
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- New module Weak for manipulating weak pointers.
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- New module Callback for registering closures and exceptions to be
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used from C.
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* Foreign interface:
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- Better support for callbacks (C calling Caml), exception raising
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from C, and main() in C. Added function to remove a global root.
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- Option -output-obj to package Caml code as a C library.
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* Thread library: fixed bug in timed_read and timed_write operations;
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Lexing.from_function and Lexing.from_channel now reentrant.
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* Unix interface: renamed EACCESS to EACCES (the POSIX name); added setsid;
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fixed bug in inet_addr_of_string for 64-bit platforms.
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* Ocamlyacc: default error function no longer prevents error recovery.
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* Ocamllex: fixed reentrancy problem w.r.t. exceptions during refill;
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fixed output problem (\r\r\n) under Win32.
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* Macintosh port:
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- The makefiles are provided for compiling and installing O'Caml on
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a Macintosh with MPW 3.4.1.
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- An application with the toplevel in a window is forthcoming.
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* Windows NT/95 port: updated toplevel GUI to that of Caml Light 0.73.
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* Emacs editing mode and debugger interface included in distribution.
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Objective Caml 1.03:
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--------------------
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* Typing:
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- bug with type names escaping their scope via unification with
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non-generalized type variables '_a completely fixed;
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- fixed bug in occur check : it was too restrictive;
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- fixed bug of coercion operators;
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- check that no two types of the same name are generated in a module
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(there was no check for classes);
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- "#install_printer" works again;
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- fixed bug in printing of subtyping errors;
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- in class interfaces, construct "method m" (without type) change
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the status of method m from abstract to concrete;
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- in a recursive definition of class interfaces, a class can now
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inherit from a previous class;
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- typing of a method make use of an eventual previously given type
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of this method, yielding clearer type errors.
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* Compilation (ocamlc and ocamlopt):
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- fixed bug in compilation of classes.
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* Native-code compilation:
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- optimization of functions taking tuples of arguments;
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- code emitter for the Motorola 680x0 processors (retrocomputing week);
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- Alpha/OSF1: generate frame descriptors, avoids crashes when e.g.
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exp() or log() cause a domain error; fixed bug with
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String.length "literal";
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- Sparc, Mips, HPPA: removed marking of scanned stack frames
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(benefits do not outweight cost).
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* Standard library:
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- Arg.parse now prints documentation for command-line options;
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- I/O buffers (types in_channel and out_channel) now heap-allocated,
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avoids crashing when closing a channel several times;
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- Overflow bug in compare() fixed;
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- GC bug in raising Sys_error from I/O functions fixed;
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- Parsing.symbol_start works even for epsilon productions.
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* Foreign interface: main() in C now working, fixed bug in library
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order at link time.
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* Thread library: guard against calling thread functions before Thread.create.
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* Unix library: fixed getsockopt, setsockopt, open_process_{in,out}.
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* Perl-free, cpp-free, cholesterol-free installation procedure.
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Objective Caml 1.02:
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--------------------
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* Typing:
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- fixed bug with type names escaping their scope via unification
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with non-generalized type variables '_a;
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- keep #class abbreviations longer;
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- faster checking of well-formed abbreviation definitions;
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- stricter checking of "with" constraints over signatures (arity
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mismatch, overriding of an already manifest type).
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* Compilation (ocamlc and ocamlopt):
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- fixed bug in compilation of recursive classes;
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- [|...|] and let...rec... allowed inside definitions of recursive
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data structures;
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* Bytecode compilation: fixed overflow in linker for programs with
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more than 65535 globals and constants.
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* Native-code compilation:
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- ocamlopt ported to HPPA under HP/UX, Intel x86 under Solaris 2,
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PowerMacintosh under MkLinux;
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- fixed two bugs related to floating-point arrays (one with "t array"
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where t is an abstract type implemented as float, one with
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comparison between two float arrays on 32 bit platforms);
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- fixed reloading/spilling problem causing non-termination of
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register allocation;
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- fixed bugs in handling of () causing loss of tail recursion;
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- fixed reloading bug in indirect calls.
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* Windows NT/95 port:
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- complete port of the threads library (Pascal Cuoq);
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- partial port of the Unix library (Pascal Cuoq);
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- expansion of *, ? and @ on the command line.
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* Standard library:
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- bug in in List.exists2 fixed;
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- bug in "Random.int n" for very large n on 64-bit machines fixed;
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- module Format: added a "general purpose" type of box (open_box);
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can output on several formatters at the same time.
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* The "threads" library:
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- implementation on top of native threads available for Win32 and
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POSIX 1003.1c;
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- added -thread option to select a thread-safe version of the
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standard library, the ThreadIO module is no longer needed.
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* The "graph" library: avoid invalid pixmaps when doing
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open_graph/close_graph several times.
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* The "dynlink" library: support for "private" (no re-export) dynamic loading.
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* ocamlyacc: skip '...' character literals correctly.
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* C interface: C code linked with O'Caml code can provide its own main()
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and call caml_main() later.
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Objective Caml 1.01:
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--------------------
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* Typing: better report of type incompatibilities;
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non-generalizable type variables in a struct...end no longer flagged
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immediately as an error;
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name clashes during "open" avoided.
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* Fixed bug in output_value where identical data structures
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could have different external representations; this bug caused wrong
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"inconsistent assumptions" errors when checking compatibility of
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interfaces at link-time.
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* Standard library: fixed bug in Array.blit on overlapping array sections
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* Unmarshaling from strings now working.
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* ocamlc, ocamlopt: new flags -intf and -impl to force compilation as
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an implementation/an interface, regardless of file extension;
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overflow bug on wide-range integer pattern-matchings fixed.
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* ocamlc: fixed bytecode generation bug causing problems with compilation
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units defining more than 256 values
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* ocamlopt, all platforms:
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fixed GC bug in "let rec" over data structures;
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link startup file first, fixes "undefined symbol" errors with some
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libraries.
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* ocamlopt, Intel x86:
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more efficient calling sequence for calling C functions;
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floating-point wars, chapter 5: don't use float stack for holding
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float pseudo-registers, stack-allocating them is just as efficient.
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* ocamlopt, Alpha and Intel x86: more compact calling sequence for garbage
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collection.
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* ocamllex: generated automata no longer use callbacks for refilling
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the input buffer (works better with threads); character literals
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correctly skipped inside actions.
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* ocamldep: "-I" directories now searched in the right order
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* Thread library: incompatibilities with callbacks, signals, and
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dynamic linking removed; scheduling bug with Thread.wait fixed.
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* New "dbm" library, interfaces with NDBM.
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* Object-oriented extensions:
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instance variables can now be omitted in class types;
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some error messages have been made clearer;
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several bugs fixes.
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Objective Caml 1.00:
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--------------------
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* Merge of Jerome Vouillon and Didier Remy's object-oriented
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extensions.
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* All libraries: all "new" functions renamed to "create" because "new"
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is now a reserved keyword.
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* Compilation of "or" patterns (pat1 | pat2) completely revised to
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avoid code size explosion.
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* Compiler support for preprocessing source files (-pp flag).
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* Library construction: flag -linkall to force linking of all units in
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a library.
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* Native-code compiler: port to the Sparc under NetBSD.
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* Toplevel: fixed bug when tracing several times the same function
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under different names.
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* New format for marshaling arbitrary data structures, allows
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marshaling to/from strings.
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* Standard library: new module Genlex (configurable lexer for streams)
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* Thread library: much better support for I/O and blocking system calls.
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* Graphics library: faster reclaimation of unused pixmaps.
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* Unix library: new functions {set,clear}_nonblock, {set,clear}_close_on_exec,
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{set,get}itimer, inet_addr_any, {get,set}sockopt.
|
|
|
|
* Dynlink library: added support for linking libraries (.cma files).
|
|
|
|
Caml Special Light 1.15:
|
|
------------------------
|
|
|
|
* Caml Special Light now runs under Windows NT and 95. Many thanks to
|
|
Kevin Gallo (Microsoft Research) who contributed his initial port.
|
|
|
|
* csllex now generates tables for a table-driven automaton.
|
|
The resulting lexers are smaller and run faster.
|
|
|
|
* Completely automatic configuration script.
|
|
|
|
* Typing: more stringent checking of module type definitions against
|
|
manifest module type specifications.
|
|
|
|
* Toplevel: recursive definitions of values now working.
|
|
|
|
* Native-code compiler, all platforms:
|
|
toplevel "let"s with refutable patterns now working;
|
|
fixed bug in assignment to float record fields;
|
|
direct support for floating-point negation and absolute value.
|
|
|
|
* Native-code compiler, x86: fixed bug with tail calls (with more than
|
|
4 arguments) from a function with a one-word stack frame.
|
|
|
|
* Native-code compiler, Sparc: problem with -compact fixed.
|
|
|
|
* Thread library: support for non-blocking writes; scheduler revised.
|
|
|
|
* Unix library: bug in gethostbyaddr fixed; bounds checking for read,
|
|
write, etc.
|
|
|
|
Caml Special Light 1.14:
|
|
------------------------
|
|
|
|
* cslopt ported to the PowerPC/RS6000 architecture. Better support for
|
|
AIX in the bytecode system as well.
|
|
|
|
* cslopt, all platforms: fixed bug in live range splitting around catch/exit.
|
|
|
|
* cslopt for the Intel (floating-point wars, chapter 4):
|
|
implemented Ershov's algorithm to minimize floating-point stack usage;
|
|
out-of-order pops fixed.
|
|
|
|
* Several bug fixes in callbacks and signals.
|
|
|
|
Caml Special Light 1.13:
|
|
------------------------
|
|
|
|
* Pattern-matching compilation revised to factor out accesses inside
|
|
matched structures.
|
|
|
|
* Callbacks and signals now supported in cslopt.
|
|
Signals are only detected at allocation points, though.
|
|
Added callback functions with 2 and 3 arguments.
|
|
|
|
* More explicit error messages when a native-code program aborts due
|
|
to array or string bound violations.
|
|
|
|
* In patterns, "C _" allowed even if the constructor C has several arguments.
|
|
|
|
* && and || allowed as alternate syntax for & and or.
|
|
|
|
* cslopt for the Intel: code generation for floating-point
|
|
operations entirely redone for the third time (a pox on whomever at
|
|
Intel decided to organize the floating-point registers as a stack).
|
|
|
|
* cslopt for the Sparc: don't use Sparc V8 smul and sdiv instructions,
|
|
emulation on V7 processors is abysmal.
|
|
|
|
Caml Special Light 1.12:
|
|
------------------------
|
|
|
|
* Fixed an embarrassing bug with references to floats.
|
|
|
|
Caml Special Light 1.11:
|
|
------------------------
|
|
|
|
* Streams and stream parsers a la Caml Light are back (thanks to
|
|
Daniel de Rauglaudre).
|
|
|
|
* User-level concurrent threads, with low-level shared memory primitives
|
|
(locks and conditions) as well as channel-based communication primitives
|
|
with first-class synchronous events, in the style of Reppy's CML.
|
|
|
|
* The native-code compiler has been ported to the HP PA-RISC processor
|
|
running under NextStep (sorry, no HPUX, its linker keeps dumping
|
|
core on me).
|
|
|
|
* References not captured in a function are optimized into variables.
|
|
|
|
* Fixed several bugs related to exceptions.
|
|
|
|
* Floats behave a little more as specified in the IEEE standard
|
|
(believe it or not, but x < y is not the negation of x >= y).
|
|
|
|
* Lower memory consumption for the native-code compiler.
|
|
|
|
Caml Special Light 1.10:
|
|
------------------------
|
|
|
|
* Many bug fixes (too many to list here).
|
|
|
|
* Module language: introduction of a "with module" notation over
|
|
signatures for concise sharing of all type components of a signature;
|
|
better support for concrete types in signatures.
|
|
|
|
* Native-code compiler: the Intel 386 version has been ported to
|
|
NextStep and FreeBSD, and generates better code (especially for
|
|
floats)
|
|
|
|
* Tools and libraries: the Caml Light profiler and library for
|
|
arbitrary-precision arithmetic have been ported (thanks to John
|
|
Malecki and Victor Manuel Gulias Fernandez); better docs for the Unix
|
|
and regexp libraries.
|
|
|
|
Caml Special Light 1.07:
|
|
------------------------
|
|
|
|
* Syntax: optional ;; allowed in compilation units and structures
|
|
(back by popular demand)
|
|
|
|
* cslopt:
|
|
generic handling of float arrays fixed
|
|
direct function application when the function expr is not a path fixed
|
|
compilation of "let rec" over values fixed
|
|
multiple definitions of a value name in a module correctly handled
|
|
no calls to ranlib in Solaris
|
|
|
|
* csltop: #trace now working
|
|
|
|
* Standard library: added List.memq; documentation of Array fixed.
|
|
|
|
Caml Special Light 1.06:
|
|
------------------------
|
|
|
|
* First public release.
|