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Objective Caml 3.11.1:
----------------------
Bug fixes:
- PR#4095: ocamldebug: strange behaviour of control-C
- PR#4403: ocamldebug: improved handling of packed modules
- PR#4650: Str.regexp_case_fold mis-handling complemented character sets [^a]
- PR#4660: Scanf.format_from_string: handling of double quote
- PR#4666: Unix.exec* failure in multithread programs under MacOS X and FreeBSD
- PR#4667: debugger out of sync with dynlink changes
- PR#4678: random "out of memory" error with systhreads
- PR#4690: issue with dynamic loading under MacOS 10.5
- PR#4692: wrong error message with options -i and -pack passed to ocamlc
- PR#4699: in otherlibs/dbm, fixed construction of dlldbm.so.
- PR#4704: error in caml_modify_generational_global_root()
- PR#4708: (ocamldoc) improved printing of infix identifiers such as "lor".
- PR#4722: typo in configure script
- PR#4729: documented the fact that PF_INET6 is not available on all platforms
- PR#4730: incorrect typing involving abbreviation "type 'a t = 'a"
- PR#4731: incorrect quoting of arguments passed to the assembler on x86-64
- PR#4735: Unix.LargeFile.fstat cannot report size over 32bits on Win32
- PR#4740: guard against possible processor error in
{Int32,Int64,Nativeint}.{div,rem}
- PR#4745: type inference wrongly produced non-generalizable type variables.
- PR#4749: better pipe size for win32unix
- PR#4756: printf: no error reported for wrong format '%_s'
- PR#4758: scanf: handling of \<newline> by format '%S'
- PR#4766: incorrect simplification of some type abbreviations.
- PR#4768: printf: %F does not respect width and precision specifications
- PR#4769: Format.bprintf fails to flush
- PR#4775: fatal error Ctype.Unify during module type-checking (temporary fix)
- PR#4776: bad interaction between exceptions and classes
- PR#4780: labltk build problem under Windows.
- PR#4790: under Windows, map ERROR_NO_DATA Win32 error to EPIPE Unix error.
- PR#4792: bug in Big_int.big_int_of_int64 on 32-bit platforms.
- PR#4796: ocamlyacc: missing NUL termination of string
- PR#4804: bug in Big_int.int64_of_big_int on 32-bit platforms.
- PR#4805: improving compatibility with the clang C compiler
- PR#4809: issue with Unix.create_process under Win32
- PR#4814: ocamlbrowser: crash when editing comments
- PR#4816: module abbreviations remove 'private' type restrictions
- PR#4817: Object type gives error "Unbound type parameter .."
- Module Parsing: improved computation of locations when an ocamlyacc rule
starts with an empty nonterminal
- Type-checker: fixed wrong variance computation for private types
- x86-32 code generator, MSVC port: wrong "fld" instruction generated.
- ocamlbuild: incorrectly using the compile-time value of $OCAMLLIB
- Makefile problem when configured with -no-shared-libs
- ocamldoc: use dynamic loading in native code
Other changes:
- Improved wording of various error messages
(contributed by Jonathan Davies, Citrix).
- Support for 64-bit mode in Solaris/x86 (PR#4670).
Objective Caml 3.11.0:
----------------------
(Changes that can break existing programs are marked with a "*" )
Language features:
- Addition of lazy patterns: "lazy <pat>" matches suspensions whose values,
after forcing, match the pattern <pat>.
- Introduction of private abbreviation types "type t = private <type-expr>",
for abstracting the actual manifest type in type abbreviations.
- Subtyping is now allowed between a private abbreviation and its definition,
and between a polymorphic method and its monomorphic instance.
Compilers:
- The file name for a compilation unit should correspond to a valid
identifier (Otherwise dynamic linking and other things can fail, and
a warning is emitted.)
* Revised -output-obj: the output name must now be provided; its
extension must be one of .o/.obj, .so/.dll, or .c for the
bytecode compiler. The compilers can now produce a shared library
(with all the needed -ccopts/-ccobjs options) directly.
- -dtypes renamed to -annot, records (in .annot files) which function calls
are tail calls.
- All compiler error messages now include a file name and location, for
better interaction with Emacs' compilation mode.
- Optimized compilation of "lazy e" when the argument "e" is
already evaluated.
- Optimized compilation of equality tests with a variant constant constructor.
- The -dllib options recorded in libraries are no longer ignored when
-use_runtime or -use_prims is used (unless -no_auto_link is
explicitly used).
- Check that at most one of -pack, -a, -shared, -c, -output-obj is
given on the command line.
- Optimized compilation of private types as regular manifest types
(e.g. abbreviation to float, float array or record types with only
float fields).
Native-code compiler:
- New port: Mac OS X / Intel in 64-bit mode (configure with -cc "gcc -m64").
- A new option "-shared" to produce a plugin that can be dynamically
loaded with the native version of Dynlink.
- A new option "-nodynlink" to enable optimizations valid only for code
that is never dynlinked (no-op except for AMD64).
- More aggressive unboxing of floats and boxed integers.
- Can select which assembler and asm options to use at configuration time.
Run-time system:
- New implementation of the page table describing the heap (two-level
array in 32 bits, sparse hashtable in 64 bits), fixes issues with address
space randomization on 64-bit OS (PR#4448).
- New "generational" API for registering global memory roots with the GC,
enables faster scanning of global roots.
(The functions are caml_*_generational_global_root in <caml/memory.h>.)
- New function "caml_raise_with_args" to raise an exception with several
arguments from C.
- Changes in implementation of dynamic linking of C code:
under Win32, use Alain Frisch's flexdll implementation of the dlopen
API; under MacOSX, use dlopen API instead of MacOSX bundle API.
- Programs may now choose a first-fit allocation policy instead of
the default next-fit. First-fit reduces fragmentation but is
slightly slower in some cases.
Standard library:
- Parsing library: new function "set_trace" to programmatically turn
on or off the printing of a trace during parsing.
- Printexc library: new functions "print_backtrace" and "get_backtrace"
to obtain a stack backtrace of the most recently raised exception.
New function "record_backtrace" to turn the exception backtrace mechanism
on or off from within a program.
- Scanf library: fine-tuning of meta format implementation;
fscanf behaviour revisited: only one input buffer is allocated for any
given input channel;
the %n conversion does not count a lookahead character as read.
Other libraries:
- Dynlink: on some platforms, the Dynlink library is now available in
native code. The boolean Dynlink.is_native allows the program to
know whether it has been compiled in bytecode or in native code.
- Bigarrays: added "unsafe_get" and "unsafe_set"
(non-bound-checking versions of "get" and "set").
- Bigarrays: removed limitation "array dimension < 2^31".
- Labltk: added support for TK 8.5.
- Num: added conversions between big_int and int32, nativeint, int64.
More efficient implementation of Num.quo_num and Num.mod_num.
- Threads: improved efficiency of mutex and condition variable operations;
improved interaction with Unix.fork (PR#4577).
- Unix: added getsockopt_error returning type Unix.error.
Added support for TCP_NODELAY and IPV6_ONLY socket options.
- Win32 Unix: "select" now supports all kinds of file descriptors.
Improved emulation of "lockf" (PR#4609).
Tools:
- ocamldebug now supported under Windows (MSVC and Mingw ports),
but without the replay feature. (Contributed by Dmitry Bely
and Sylvain Le Gall at OCamlCore with support from Lexifi.)
- ocamldoc: new option -no-module-constraint-filter to include functions
hidden by signature constraint in documentation.
- ocamlmklib and ocamldep.opt now available under Windows ports.
- ocamlmklib no longer supports the -implib option.
- ocamlnat: an experimental native toplevel (not built by default).
Camlp4:
* programs linked with camlp4lib.cma now also need dynlink.cma.
Bug fixes:
- Major GC and heap compaction: fixed bug involving lazy values and
out-of-heap pointers.
- PR#3915: updated most man pages.
- PR#4261: type-checking of recursive modules
- PR#4308: better stack backtraces for "spontaneous" exceptions such as
Stack_overflow, Out_of_memory, etc.
- PR#4338: Str.global_substitute, Str.global_replace and the Str.*split*
functions are now tail-recursive.
- PR#4503: fixed bug in classify_float on ARM.
- PR#4512: type-checking of recursive modules
- PR#4517: crash in ocamllex-generated lexers.
- PR#4542: problem with return value of Unix.nice.
- PR#4557: type-checking of recursive modules.
- PR#4562: strange %n semantics in scanf.
- PR#4564: add note "stack is not executable" to object files generated by
ocamlopt (Linux/x86, Linux/AMD64).
- PR#4566: bug in Ratio.approx_ratio_fix and Num.approx_num_fix.
- PR#4582: clarified the documentation of functions in the String module.
- PR#4583: stack overflow in "ocamlopt -g" during closure conversion pass.
- PR#4585: ocamldoc and "val virtual" declarations.
- PR#4587: ocamldoc and escaped @ characters.
- PR#4605: Buffer.add_substitute was sometime wrong when target string had
backslashes.
- PR#4614: Inconsistent declaration of CamlCBCmd in LablTk library.
Objective Caml 3.10.2:
----------------------
Bug fixes:
- PR#1217 (partial) Typo in ocamldep man page
- PR#3952 (partial) ocamlopt: allocation problems on ARM
- PR#4339 (continued) ocamlopt: problems on HPPA
- PR#4455 str.mli not installed under Windows
- PR#4473 crash when accessing float array with polymorphic method
- PR#4480 runtime would not compile without gcc extensions
- PR#4481 wrong typing of exceptions with object arguments
- PR#4490 typo in error message
- Random crash on 32-bit when major_heap_increment >= 2^22
- Big performance bug in Weak hashtables
- Small bugs in the make-package-macosx script
- Bug in typing of polymorphic variants (reported on caml-list)
Objective Caml 3.10.1:
----------------------
Bug fixes:
- PR#3830 small bugs in docs
- PR#4053 compilers: improved compilation time for large variant types
- PR#4174 ocamlopt: fixed ocamlopt -nopervasives
- PR#4199 otherlibs: documented a small problem in Unix.utimes
- PR#4280 camlp4: parsing of identifier (^)
- PR#4281 camlp4: parsing of type constraint
- PR#4285 runtime: cannot compile under AIX
- PR#4286 ocamlbuild: cannot compile under AIX and SunOS
- PR#4288 compilers: including a functor application with side effects
- PR#4295 camlp4 toplevel: synchronization after an error
- PR#4300 ocamlopt: crash with backtrace and illegal array access
- PR#4302 camlp4: list comprehension parsing problem
- PR#4304 ocamlbuild: handle -I correctly
- PR#4305 stdlib: alignment of Arg.Symbol
- PR#4307 camlp4: assertion failure
- PR#4312 camlp4: accept "let _ : int = 1"
- PR#4313 ocamlbuild: -log and missing directories
- PR#4315 camlp4: constraints in classes
- PR#4316 compilers: crash with recursive modules and Lazy
- PR#4318 ocamldoc: installation problem with Cygwin (tentative fix)
- PR#4322 ocamlopt: stack overflow under Windows
- PR#4325 compilers: wrong error message for unused var
- PR#4326 otherlibs: marshal Big_int on win64
- PR#4327 ocamlbuild: make emacs look for .annot in _build directory
- PR#4328 camlp4: stack overflow with nil nodes
- PR#4331 camlp4: guards on fun expressions
- PR#4332 camlp4: parsing of negative 32/64 bit numbers
- PR#4336 compilers: unsafe recursive modules
- PR#4337 (note) camlp4: invalid character escapes
- PR#4339 ocamlopt: problems on HP-UX (tentative fix)
- PR#4340 camlp4: wrong pretty-printing of optional arguments
- PR#4348 ocamlopt: crash on Mac Intel
- PR#4349 camlp4: bug in private type definitions
- PR#4350 compilers: type errors with records and polymorphic variants
- PR#4352 compilers: terminal recursion under Windows (tentative fix)
- PR#4354 ocamlcp: mismatch with ocaml on polymorphic let
- PR#4358 ocamlopt: float constants wrong on ARM
- PR#4360 ocamldoc: string inside comment
- PR#4365 toplevel: wrong pretty-printing of polymorphic variants
- PR#4373 otherlibs: leaks in win32unix
- PR#4374 otherlibs: threads module not initialized
- PR#4375 configure: fails to build on bytecode-only architectures
- PR#4377 runtime: finalisation of infix pointers
- PR#4378 ocamlbuild: typo in plugin.ml
- PR#4379 ocamlbuild: problem with plugins under Windows
- PR#4382 compilers: typing of polymorphic record fields
- PR#4383 compilers: including module with private type
- PR#4385 stdlib: Int32/Int64.format are unsafe
- PR#4386 otherlibs: wrong signal numbers with Unix.sigprocmask etc.
- PR#4387 ocamlbuild: build directory not used properly
- PR#4392 ocamldep: optional argument of class
- PR#4394 otherlibs: infinite loops in Str
- PR#4397 otherlibs: wrong size for flag arrays in win32unix
- PR#4402 ocamldebug: doesn't work with -rectypes
- PR#4410 ocamlbuild: problem with plugin and -build
- PR#4411 otherlibs: crash with Unix.access under Windows
- PR#4412 stdlib: marshalling broken on 64 bit architectures
- PR#4413 ocamlopt: crash on AMD64 with out-of-bound access and reraise
- PR#4417 camlp4: pretty-printing of unary minus
- PR#4419 camlp4: problem with constraint in type class
- PR#4426 compilers: problem with optional labels
- PR#4427 camlp4: wrong pretty-printing of lists of functions
- PR#4433 ocamlopt: fails to build on MacOSX 10.5
- PR#4435 compilers: crash with objects
- PR#4439 fails to build on MacOSX 10.5
- PR#4441 crash when build on sparc64 linux
- PR#4442 stdlib: crash with weak pointers
- PR#4446 configure: fails to detect X11 on MacOSX 10.5
- PR#4448 runtime: huge page table on 64-bit architectures
- PR#4450 compilers: stack overflow with recursive modules
- PR#4470 compilers: type-checking of recursive modules too restrictive
- PR#4472 configure: autodetection of libX11.so on Fedora x86_64
- printf: removed (partially implemented) positional specifications
- polymorphic < and <= comparisons: some C compiler optimizations
were causing incorrect results when arguments are incomparable
New features:
- made configure script work on PlayStation 3
- ARM port: brought up-to-date for Debian 4.0 (Etch)
- many other small changes and bugfixes in camlp4, ocamlbuild, labltk,
emacs files
Objective Caml 3.10.0:
----------------------
(Changes that can break existing programs are marked with a "*" )
Language features:
- Added virtual instance variables in classes "val virtual v : t"
* Changed the behaviour of instance variable overriding; the new
definition replaces the old one, rather than creating a new
variable.
New tools:
- ocamlbuild: compilation manager for OCaml applications and libraries.
See draft documentation at http://gallium.inria.fr/~pouillar/
* Camlp4: heavily revised implementation, new API.
New ports:
- MacOS X PowerPC 64 bits.
- MS Windows 64 bits (x64) using the Microsoft PSDK toolchain.
- MS Windows 32 bits using the Visual Studio 2005 toolchain.
Compilers:
- Faster type-checking of functor applications.
- Referencing an interface compiled with -rectypes from a module
not compiled with -rectypes is now an error.
- Revised the "fragile matching" warning.
Native-code compiler:
- Print a stack backtrace on an uncaught exception.
(Compile and link with ocamlopt -g; execute with OCAMLRUNPARAM=b.)
Supported on Intel/AMD in 32 and 64 bits, PPC in 32 and 64 bits.
- Stack overflow detection on MS Windows 32 bits (courtesy O. Andrieu).
- Stack overflow detection on MacOS X PPC and Intel.
- Intel/AMD 64 bits: generate position-independent code by default.
- Fixed bug involving -for-pack and missing .cmx files (PR#4124).
- Fixed bug causing duplication of literals (PR#4152).
Run-time system:
- C/Caml interface functions take "char const *" arguments
instead of "char *" when appropriate.
- Faster string comparisons (fast case if strings are ==).
Standard library:
- Refined typing of format strings (type format6).
- Printf, Format: new function ifprintf that consumes its arguments
and prints nothing (useful to print conditionally).
- Scanf:
new function format_from_string to convert a string to a format string;
new %r conversion to accomodate user defined scanners.
- Filename: improved Win32 implementation of Filename.quote.
- List: List.nth now tail-recursive.
- Sys: added Sys.is_directory. Some functions (e.g. Sys.command) that
could incorrectly raise Sys_io_blocked now raise Sys_error as intended.
- String and Char: the function ``escaped'' now escapes all the characters
especially handled by the compiler's lexer (PR#4220).
Other libraries:
- Bigarray: mmap_file takes an optional argument specifying
the start position of the data in the mapped file.
- Dynlink: now defines only two modules, Dynlink and Dynlinkaux (internal),
reducing risks of name conflicts with user modules.
- Labltk under Win32: now uses Tcl/Tk 8.4 instead of 8.3 by default.
- VM threads: improved performance of I/O operations (less polling).
- Unix: new function Unix.isatty.
- Unix emulation under Win32:
fixed incorrect error reporting in several functions (PR#4097);
better handling of channels opened on sockets (PR#4098);
fixed GC bug in Unix.system (PR#4112).
Documentation generator (OCamldoc):
- correctly handle '?' in value names (PR#4215)
- new option -hide-warnings not to print ocamldoc warnings
Lexer generator (ocamllex): improved error reporting.
License: fixed a typo in the "special exception" to the LGPL.
Objective Caml 3.09.3:
----------------------
Bug fixes:
- ocamldoc: -using modtype constraint to filter module elements displayed
in doc PR#4016
- ocamldoc: error in merging of top dependencies of modules PR#4007
- ocamldoc: -dot-colors has no effect PR#3981
- ocamdloc: missing crossref in text from intro files PR#4066
- compilers: segfault with recursive modules PR#4008
- compilers: infinite loop when compiling objects PR#4018
- compilers: bad error message when signature mismatch PR#4001
- compilers: infinite loop with -rectypes PR#3999
- compilers: contravariance bug in private rows
- compilers: unsafe cast with polymorphic exception PR#4002
- native compiler: bad assembly code generated for AMD64 PR#4067
- native compiler: stack alignment problems on MacOSX/i386 PR#4036
- stdlib: crash in marshalling PR#4030
- stdlib: crash when closing a channel twice PR#4039
- stdlib: memory leak in Sys.readdir PR#4093
- C interface: better definition of CAMLreturn PR#4068
- otherlibs/unix: crash in gethostbyname PR#3043
- tools: subtle problem with unset in makefile PR#4048
- camlp4: install pa_o_fast.o PR#3812
- camlp4: install more modules PR#3689
New features:
- ocamldoc: name resolution in cross-referencing {!name}: if name is not
found, then it is searched in the parent module/class, and in the parent
of the parent, and so on until it is found.
- ocamldoc: new option -short-functors to use a short form to display
functors in html generator PR#4017
- ocamlprof: added "-version" option
Objective Caml 3.09.2:
----------------------
Bug fixes:
- Makefile: problem with "make world.opt" PR#3954
- compilers: problem compiling several modules with one command line PR#3979
- compilers,ocamldoc: error message that Emacs cannot parse
- compilers: crash when printing type error PR#3968
- compilers: -dtypes wrong for monomorphic type variables PR#3894
- compilers: wrong warning on optional arguments PR#3980
- compilers: crash when wrong use of type constructor in let rec PR#3976
- compilers: better wording of "statement never returns" warning PR#3889
- runtime: inefficiency of signal handling PR#3990
- runtime: crashes with I/O in multithread programs PR#3906
- camlp4: empty file name in error messages PR#3886
- camlp4: stack overflow PR#3948
- otherlibs/labltk: ocamlbrowser ignores its command line options PR#3961
- otherlibs/unix: Unix.times wrong under Mac OS X PR#3960
- otherlibs/unix: wrong doc for execvp and execvpe PR#3973
- otherlibs/win32unix: random crash in Unix.stat PR#3998
- stdlib: update_mod not found under Windows PR#3847
- stdlib: Filename.dirname/basename wrong on Win32 PR#3933
- stdlib: incomplete documentation of Pervasives.abs PR#3967
- stdlib: Printf bugs PR#3902, PR#3955
- tools/checkstack.c: missing include
- yacc: crash when given argument "-" PR#3956
New features:
- ported to MacOS X on Intel PR#3985
- configure: added support for GNU Hurd PR#3991
Objective Caml 3.09.1:
----------------------
Bug fixes:
- compilers: raise not_found with -principal PR#3855
- compilers: assert failure in typeclass.cml PR#3856
- compilers: assert failure in typing/ctype.ml PR#3909
- compilers: fatal error exception Ctype.Unify PR#3918
- compilers: spurious warning Y in objects PR#3868
- compilers: spurious warning Z on loop index PR#3907
- compilers: error message that emacs cannot parse
- ocamlopt: problems with -for-pack/-pack PR#3825, PR#3826, PR#3919
- ocamlopt: can't produce shared libraries on x86_64 PR#3869, PR#3924
- ocamlopt: float alignment problem on SPARC PR#3944
- ocamlopt: can't compile on MIPS PR#3936
- runtime: missing dependence for ld.conf
- runtime: missing dependence for .depend.nt PR#3880
- runtime: memory leak in caml_register_named_value PR#3940
- runtime: crash in Marshal.to_buffer PR#3879
- stdlib: Sys.time giving wrong results on Mac OS X PR#3850
- stdlib: Weak.get_copy causing random crashes in rare cases
- stdlib, debugger, labltk: use TMPDIR if set PR#3895
- stdlib: scanf bug on int32 and nativeint PR#3932
- camlp4: mkcamlp4 option parsing problem PR#3941
- camlp4: bug in pretty-printing of lazy/assert/new
- camlp4: update the unmaintained makefile for _loc name
- ocamldoc: several fixes see ocamldoc/Changes.txt
- otherlibs/str: bug in long sequences of alternatives PR#3783
- otherlibs/systhreads: deadlock in Windows PR#3910
- tools: update dumpobj to handle new event format PR#3873
- toplevel: activate warning Y in toplevel PR#3832
New features:
- otherlibs/labltk: browser uses menu bars instead of menu buttons
Objective Caml 3.09.0:
----------------------
(Changes that can break existing programs are marked with a "*" )
Language features:
- Introduction of private row types, for abstracting the row in object
and variant types.
Type checking:
- Polymorphic variants with at most one constructor [< `A of t] are no
longer systematically promoted to the exact type [`A of t]. This was
more confusing than useful, and created problems with private row
types.
Both compilers:
- Added warnings 'Y' and 'Z' for local variables that are bound but
never used.
- Added warning for some uses non-returning functions (e.g. raise), when they
are passed extra arguments, or followed by extra statements.
- Pattern matching: more prudent compilation in case of guards; fixed PR#3780.
- Compilation of classes: reduction in size of generated code.
- Compilation of "module rec" definitions: fixed a bad interaction with
structure coercion (to a more restrictive signature).
Native-code compiler (ocamlopt):
* Revised implementation of the -pack option (packing of several compilation
units into one). The .cmx files that are to be packed with
"ocamlopt -pack -o P.cmx" must be compiled with "ocamlopt -for-pack P".
In exchange for this additional constraint, ocamlopt -pack is now
available on all platforms (no need for binutils).
* Fixed wrong evaluation order for arguments to certain inlined functions.
- Modified code generation for "let rec ... and ..." to reduce compilation
time (which was quadratic in the number of mutually-recursive functions).
- x86 port: support tail-calls for functions with up to 21 arguments.
- AMD64 port, Linux: recover from system stack overflow.
- Sparc port: more portable handling of out-of-bound conditions
on systems other than Solaris.
Standard library:
- Pervasives: faster implementation of close_in, close_out.
set_binary_mode_{out,in} now working correctly under Cygwin.
- Printf: better handling of partial applications of the printf functions.
- Scanf: new function sscanf_format to read a format from a
string. The type of the resulting format is dynamically checked and
should be the type of the template format which is the second argument.
- Scanf: no more spurious lookahead attempt when the end of file condition
is set and a correct token has already been read and could be returned.
Other libraries:
- System threads library: added Thread.sigmask; fixed race condition
in signal handling.
- Bigarray library: fixed bug in Array3.of_array.
- Unix library: use canonical signal numbers in results of Unix.wait*;
hardened Unix.establish_server against EINTR errors.
Run-time system:
- Support platforms where sizeof(void *) = 8 and sizeof(long) = 4.
- Improved and cleaned up implementation of signal handling.
Replay debugger:
- Improved handling of locations in source code.
OCamldoc:
- extensible {foo } syntax
- user can give .txt files on the command line, containing ocamldoc formatted
text, to be able to include bigger texts out of source files
- -o option is now used by the html generator to indicate the prefix
of generated index files (to avoid conflict when a Index module exists
on case-insensitive file systems).
Miscellaneous:
- Configuration information is installed in `ocamlc -where`/Makefile.config
and can be used by client Makefiles or shell scripts.
Objective Caml 3.08.4:
----------------------
New features:
- configure: find X11 config in some 64-bit Linux distribs
- ocamldoc: (**/**) can be canceled with another (**/**) PR#3665
- graphics: added resize_window
- graphics: check for invalid arguments to drawing primitives PR#3595
- ocamlbrowser: use windows subsystem on mingw
Bug fixes:
- ocamlopt: code generation problem on AMD64 PR#3640
- wrong code generated for some classes PR#3576
- fatal error when compiling some OO code PR#3745
- problem with comparison on constant constructors PR#3608
- camlp4: cryptic error message PR#3592
- camlp4: line numbers in multi-line antiquotations PR#3549
- camlp4: problem with make depend
- camlp4: parse error with :> PR#3561
- camlp4: ident conversion problem with val/contents/contents__
- camlp4: several small parsing problems PR#3688
- ocamldebug: handling of spaces in executable file name PR#3736
- emacs-mode: problem when caml-types-buffer is deleted by user PR#3704
- ocamldoc: extra backslash in ocamldoc man page PR#3687
- ocamldoc: improvements to HTML display PR#3698
- ocamldoc: escaping of @ in info files
- ocamldoc: escaping of . and \ in man pages PR#3686
- ocamldoc: better error reporting of misplaced comments
- graphics: fixed .depend file PR#3558
- graphics: segfault with threads and graphics PR#3651
- nums: several bugs: PR#3718, PR#3719, others
- nums: inline asm problems with gcc 4.0 PR#3604, PR#3637
- threads: problem with backtrace
- unix: problem with getaddrinfo PR#3565
- stdlib: documentation of Int32.rem and Int64.rem PR#3573
- stdlib: documentation of List.rev_map2 PR#3685
- stdlib: wrong order in Map.fold PR#3607
- stdlib: documentation of maximum float array length PR#3714
- better detection of cycles when using -rectypes
- missing case of module equality PR#3738
- better error messages for unbound type variables
- stack overflow while printing type error message PR#3705
- assert failure when typing some classes PR#3638
- bug in type_approx
- better error messages related to type variance checking
- yacc: avoid name capture for idents of the Parsing module
Objective Caml 3.08.3:
----------------------
New features:
- support for ocamlopt -pack under Mac OS X (PR#2634, PR#3320)
- ignore unknown warning options for forward and backward compatibility
- runtime: export caml_compare_unordered (PR#3479)
- camlp4: install argl.* files (PR#3439)
- ocamldoc: add -man-section option
- labltk: add the "solid" relief option (PR#3343)
Bug fixes:
- typing: fix unsoundness in type declaration variance inference.
Type parameters which are constrained must now have an explicit variant
annotation, otherwise they are invariant. This is not backward
compatible, so this might break code which either uses subtyping or
uses the relaxed value restriction (i.e. was not typable before 3.07)
- typing: erroneous partial match warning for polymorphic variants (PR#3424)
- runtime: handle the case of an empty command line (PR#3409, PR#3444)
- stdlib: make Sys.executable_name an absolute path in native code (PR#3303)
- runtime: fix memory leak in finalise.c
- runtime: auto-trigger compaction even if gc is called manually (PR#3392)
- stdlib: fix segfault in Obj.dup on zero-sized values (PR#3406)
- camlp4: correct parsing of the $ identifier (PR#3310, PR#3469)
- windows (MS tools): use link /lib instead of lib (PR#3333)
- windows (MS tools): change default install destination
- autoconf: better checking of SSE2 instructions (PR#3329, PR#3330)
- graphics: make close_graph close the X display as well as the window (PR#3312)
- num: fix big_int_of_string (empty string) (PR#3483)
- num: fix big bug on 64-bit architecture (PR#3299)
- str: better documentation of string_match and string_partial_match (PR#3395)
- unix: fix file descriptor leak in Unix.accept (PR#3423)
- unix: miscellaneous clean-ups
- unix: fix documentation of Unix.tm (PR#3341)
- graphics: fix problem when allocating lots of images under Windows (PR#3433)
- compiler: fix error message with -pack when .cmi is missing (PR#3028)
- cygwin: fix problem with compilation of camlheader (PR#3485)
- stdlib: Filename.basename doesn't return an empty string any more (PR#3451)
- stdlib: better documentation of Open_excl flag (PR#3450)
- ocamlcp: accept -thread option (PR#3511)
- ocamldep: handle spaces in file names (PR#3370)
- compiler: remove spurious warning in pattern-matching on variants (PR#3424)
- windows: better handling of InterpreterPath registry entry (PR#3334, PR#3432)
Objective Caml 3.08.2:
----------------------
Bug fixes:
- runtime: memory leak when unmarshalling big data structures (PR#3247)
- camlp4: incorrect line numbers in errors (PR#3188)
- emacs: xemacs-specific code, wrong call to "sit-for"
- ocamldoc: "Lexing: empty token" (PR#3173)
- unix: problem with close_process_* (PR#3191)
- unix: possible coredumps (PR#3252)
- stdlib: wrong order in Set.fold (PR#3161)
- ocamlcp: array out of bounds in profiled programs (PR#3267)
- yacc: problem with polymorphic variant types for grammar entries (PR#3033)
Misc:
- export <caml/printexc.h> for caml_format_exception (PR#3080)
- clean up caml_search_exe_in_path (maybe PR#3079)
- camlp4: new function "make_lexer" for new-style locations
- unix: added missing #includes (PR#3088)
Objective Caml 3.08.1:
----------------------
Licence:
- The emacs files are now under GPL
- Slightly relaxed some conditions of the QPL
Bug fixes:
- ld.conf now generated at compile-time instead of install-time
- fixed -pack on Windows XP (PR#2935)
- fixed Obj.tag (PR#2946)
- added support for multiple dlopen in Darwin
- run ranlib when installing camlp4 libraries (PR#2944)
- link camlp4opt with -linkall (PR#2949)
- camlp4 parsing of patterns now conforms to normal parsing (PR#3015)
- install camlp4 *.cmx files (PR#2955)
- fixed handling of linefeed in string constants in camlp4 (PR#3074)
- ocamldoc: fixed display of class parameters in HTML and LaTeX (PR#2994)
- ocamldoc: fixed display of link to class page in html (PR#2994)
- Windows toplevel GUI: assorted fixes (including PR#2932)
Misc:
- added -v option to ocamllex
- ocamldoc: new -intf and -impl options supported (PR#3036)
Objective Caml 3.08.0:
----------------------
(Changes that can break existing programs are marked with a "*" )
Language features:
- Support for immediate objects, i.e. objects defined without going
through a class. (Syntax is "object <fields and methods> end".)
Type-checking:
- When typing record construction and record patterns, can omit
the module qualification on all labels except one. I.e.
{ M.l1 = ...; l2 = ... } is interpreted as { M.l1 = ...; M.l2 = ... }
Both compilers:
- More compact compilation of classes.
- Much more efficient handling of class definitions inside functors
or local modules.
- Simpler representation for method tables. Objects can now be marshaled
between identical programs with the flag Marshal.Closures.
- Improved error messages for objects and variants.
- Improved printing of inferred module signatures (toplevel and ocamlc -i).
Recursion between type, class, class type and module definitions is now
correctly printed.
- The -pack option now accepts compiled interfaces (.cmi files) in addition
to compiled implementations (.cmo or .cmx).
* A compile-time error is signaled if an integer literal exceeds the
range of representable integers.
- Fixed code generation error for "module rec" definitions.
- The combination of options -c -o sets the name of the generated
.cmi / .cmo / .cmx files.
Bytecode compiler:
- Option -output-obj is now compatible with Dynlink and
with embedded toplevels.
Native-code compiler:
- Division and modulus by zero correctly raise exception Division_by_zero
(instead of causing a hardware trap).
- Improved compilation time for the register allocation phase.
- The float constant -0.0 was incorrectly treated as +0.0 on some processors.
- AMD64: fixed bugs in asm glue code for GC invocation and exception raising
from C.
- IA64: fixed incorrect code generated for "expr mod 1".
- PowerPC: minor performance tweaks for the G4 and G5 processors.
Standard library:
* Revised handling of NaN floats in polymorphic comparisons.
The polymorphic boolean-valued comparisons (=, <, >, etc) now treat
NaN as uncomparable, as specified by the IEEE standard.
The 3-valued comparison (compare) treats NaN as equal to itself
and smaller than all other floats. As a consequence, x == y
no longer implies x = y but still implies compare x y = 0.
* String-to-integer conversions now fail if the result overflows
the range of integers representable in the result type.
* All array and string access functions now raise
Invalid_argument("index out of bounds") when a bounds check fails.
In earlier releases, different exceptions were raised
in bytecode and native-code.
- Module Buffer: new functions Buffer.sub, Buffer.nth
- Module Int32: new functions Int32.bits_of_float, Int32.float_of_bits.
- Module Map: new functions is_empty, compare, equal.
- Module Set: new function split.
* Module Gc: in-order finalisation, new function finalise_release.
Other libraries:
- The Num library: complete reimplementation of the C/asm lowest
layer to work around potential licensing problems.
Improved speed on the PowerPC and AMD64 architectures.
- The Graphics library: improved event handling under MS Windows.
- The Str library: fixed bug in "split" functions with nullable regexps.
- The Unix library:
. Added Unix.single_write.
. Added support for IPv6.
. Bug fixes in Unix.closedir.
. Allow thread switching on Unix.lockf.
Runtime System:
* Name space depollution: all global C identifiers are now prefixed
with "caml" to avoid name clashes with other libraries. This
includes the "external" primitives of the standard runtime.
Ports:
- Windows ports: many improvements in the OCamlWin toplevel application
(history, save inputs to file, etc). Contributed by Christopher A. Watford.
- Native-code compilation supported for HPPA/Linux. Contributed by Guy Martin.
- Removed support for MacOS9. Mac OS 9 is obsolete and the port was not
updated since 3.05.
- Removed ocamlopt support for HPPA/Nextstep and Power/AIX.
Ocamllex:
- #line directives in the input file are now accepted.
- Added character set concatenation operator "cset1 # cset2".
Ocamlyacc:
- #line directives in the input file are now accepted.
Camlp4:
* Support for new-style locations (line numbers, not just character numbers).
- See camlp4/CHANGES and camlp4/ICHANGES for more info.
Objective Caml 3.07:
--------------------
Language features:
- Experimental support for recursive module definitions
module rec A : SIGA = StructA and B : SIGB = StructB and ...
- Support for "private types", or more exactly concrete data types
with private constructors or labels. These data types can be
de-structured normally in pattern matchings, but values of these
types cannot be constructed directly outside of their defining module.
- Added integer literals of types int32, nativeint, int64
(written with an 'l', 'n' or 'L' suffix respectively).
Type-checking:
- Allow polymorphic generalization of covariant parts of expansive
expressions. For instance, if f: unit -> 'a list, "let x = f ()"
gives "x" the generalized type forall 'a. 'a list, instead of '_a list
as before.
- The typing of polymorphic variants in pattern matching has changed.
It is intended to be more regular, sticking to the principle of "closing
only the variants which would be otherwise incomplete". Two potential
consequences: (1) some types may be left open which were closed before,
and the resulting type might not match the interface anymore (expected to
be rare); (2) in some cases an incomplete match may be generated.
- Lots of bug fixes in the handling of polymorphism and recursion inside
types.
- Added a new "-dtypes" option to ocamlc/ocamlopt, and an emacs extension
"emacs/caml-types.el". The compiler option saves inferred type information
to file *.annot, and the emacs extension allows the user to look at the
type of any subexpression in the source file. Works even in the case
of a type error (all the types computed up to the error are available).
This new feature is also supported by ocamlbrowser.
- Disable "method is overriden" warning when the method was explicitly
redefined as virtual beforehand (i.e. not through inheritance). Typing
and semantics are unchanged.
Both compilers:
- Added option "-dtypes" to dump detailed type information to a file.
- The "-i" option no longer generates compiled files, it only prints
the inferred types.
- The sources for the module named "Mod" can be placed either in Mod.ml or
in mod.ml.
- Compilation of "let rec" on non-functional values: tightened some checks,
relaxed some other checks.
- Fixed wrong code that was generated for "for i = a to max_int"
or "for i = a downto min_int".
- An explicit interface Mod.mli can now be provided for the module obtained
by ocamlc -pack -o Mod.cmo ... or ocamlopt -pack -o Mod.cmx ...
- Revised internal handling of source code locations, now handles
preprocessed code better.
- Pattern-matching bug on float literals fixed.
- Minor improvements on pattern-matching over variants.
- More efficient compilation of string comparisons and the "compare" function.
- More compact code generated for arrays of constants.
- Fixed GC bug with mutable record fields of type "exn".
- Added warning "E" for "fragile patterns": pattern matchings that would
not be flagged as partial if new constructors were added to the data type.
Bytecode compiler:
- Added option -vmthread to select the threads library with VM-level
scheduling. The -thread option now selects the system threads library.
Native-code compiler:
- New port: AMD64 (Opteron).
- Fixed instruction selection bug on expressions of the kind (raise Exn)(arg).
- Several bug fixes in ocamlopt -pack (tracking of imported modules,
command line too long).
- Signal handling bug fixed.
- x86 port:
Added -ffast-math option to use inline trigo and log functions.
Small performance tweaks for the Pentium 4.
Fixed illegal "imul" instruction generated by reloading phase.
- Sparc port:
Enhanced code generation for Sparc V8 (option -march=v8) and
Sparc V9 (option -march=v9).
Profiling support added for Solaris.
- PowerPC port:
Keep stack 16-aligned for compatibility with C calling conventions.
Toplevel interactive system:
- Tightened interface consistency checks between .cmi files, .cm[oa] files
loaded by #load, and the running toplevel.
- #trace on mutually-recursive functions was broken, works again.
- Look for .ocamlinit file in home directory in addition to the current dir.
Standard library:
- Match_failure and Assert_failure exceptions now report
(file, line, column), instead of (file, starting char, ending char).
- float_of_string, int_of_string: some ill-formed input strings were not
rejected.
- Added format concatenation, string_of_format, format_of_string.
- Module Arg: added new option handlers Set_string, Set_int, Set_float,
Symbol, Tuple.
- Module Format: tag handling is now turned off by default,
use [Format.set_tags true] to activate.
- Modules Lexing and Parsing: added better handling of positions
in source file. Added function Lexing.flush_input.
- Module Scanf: %n and %N formats to count characters / items read so far;
assorted bug fixes, %! to match end of input. New ``_'' special
flag to skip reresulting value.
- Module Format: tags are not activated by default.
- Modules Set and Map: fixed bugs causing trees to become unbalanced.
- Module Printf: less restrictive typing of kprintf.
- Module Random: better seeding; functions to generate random int32, int64,
nativeint; added support for explicit state management.
- Module Sys: added Sys.readdir for reading the contents of a directory.
Runtime system:
- output_value/input_value: fixed bug with large blocks (>= 4 Mwords)
produced on a 64-bit platform and incorrectly read back on a 32-bit
platform.
- Fixed memory compaction bug involving input_value.
- Added MacOS X support for dynamic linking of C libraries.
- Improved stack backtraces on uncaught exceptions.
- Fixed float alignment problem on Sparc V9 with gcc 3.2.
Other libraries:
- Dynlink:
By default, dynamically-loaded code now has access to all
modules defined by the program; new functions Dynlink.allow_only
and Dynlink.prohibit implement access control.
Fixed Dynlink problem with files generated with ocamlc -pack.
Protect against references to modules not yet fully initialized.
- LablTK/CamlTK: added support for TCL/TK 8.4.
- Str: reimplemented regexp matching engine, now less buggy, faster,
and LGPL instead of GPL.
- Graphics: fixed draw_rect and fill_rect bug under X11.
- System threads and bytecode threads libraries can be both installed.
- System threads: better implementation of Thread.exit.
- Bytecode threads: fixed two library initialization bugs.
- Unix: make Unix.openfile blocking to account for named pipes;
GC bug in Unix.*stat fixed; fixed problem with Unix.dup2 on Windows.
Ocamllex:
- Can name parts of the matched input text, e.g.
"0" (['0'-'7']+ as s) { ... s ... }
Ocamldebug:
- Handle programs that run for more than 2^30 steps.
Emacs mode:
- Added file caml-types.el to interactively display the type information
saved by option -dtypes.
Win32 ports:
- Cygwin port: recognize \ as directory separator in addition to /
- MSVC port: ocamlopt -pack works provided GNU binutils are installed.
- Graphics library: fixed bug in Graphics.blit_image; improved event handling.
OCamldoc:
- new ty_code field for types, to keep code of a type (with option -keep-code)
- new ex_code field for types, to keep code of an exception
(with option -keep-code)
- some fixes in html generation
- don't overwrite existing style.css file when generating HTML
- create the ocamldoc.sty file when generating LaTeX (if nonexistent)
- man pages are now installed in man/man3 rather than man/mano
- fix: empty [] in generated HTML indexes
Objective Caml 3.06:
--------------------
Type-checking:
- Apply value restriction to polymorphic record fields.
Run-time system:
- Fixed GC bug affecting lazy values.
Both compilers:
- Added option "-version" to print just the version number.
- Fixed wrong dependencies in .cmi generated with the -pack option.
Native-code compiler:
- Fixed wrong return value for inline bigarray assignments.
Libraries:
- Unix.getsockopt: make sure result is a valid boolean.
Tools:
- ocamlbrowser: improved error reporting; small Win32 fixes.
Windows ports:
- Fixed two problems with the Mingw port under Cygwin 1.3.
Objective Caml 3.05:
--------------------
Language features:
- Support for polymorphic methods and record fields.
- Allows _ separators in integer and float literals, e.g. 1_000_000.
Type-checker:
- New flag -principal to enforce principality of type inference.
- Fixed subtle typing bug with higher-order functors.
- Fixed several complexity problems; changed (again) the behaviour of
simple coercions.
- Fixed various bugs with objects and polymorphic variants.
- Improved some error messages.
Both compilers:
- Added option "-pack" to assemble several compilation units as one unit
having the given units as sub-modules.
- More precise detection of unused sub-patterns in "or" patterns.
- Warnings for ill-formed \ escapes in string and character literals.
- Protect against spaces and other special characters in directory names.
- Added interface consistency check when building a .cma or .cmxa library.
- Minor reduction in code size for class initialization code.
- Added option "-nostdlib" to ignore standard library entirely.
Bytecode compiler:
- Fixed issue with ocamlc.opt and dynamic linking.