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Diff of /sml/trunk/HISTORY

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revision 1253, Fri Jul 5 19:54:58 2002 UTC revision 1427, Tue Nov 18 23:08:15 2003 UTC
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13  Description:  Description:
14    
15  ----------------------------------------------------------------------  ----------------------------------------------------------------------
16    Name: Matthias Blume (blume (at) tti - c (dot) org)
17    Date: 2003/11/18 17:10 CST
18    Tag: blume-20031118-basis-fiddle
19    Description:
20    
21    - changed Timer interface to what might become the spec
22    - POSIX_FLAGS -> BIT_FLAGS according to spec
23    - some other minor discrepancies wrt. spec eliminated
24    
25    ----------------------------------------------------------------------
26    Name: Matthias Blume (blume (at) tti - c (dot) org)
27    Date: 2003/11/06 12:00:00 CST
28    Tag: Release_110_44
29    Description:
30    
31    New working version (110.44). New bootfiles.
32    
33    ----------------------------------------------------------------------
34    Name: Matthias Blume (blume (at) tti - c (dot) org)
35    Date: 2003/11/04 11:50:00 CST
36    Tag: blume-20031104-move-libraries
37    Description:
38    
39    Eliminated the "dont_move_libraries" directive in config/targets.
40    (The mechanism was broken and could not be fixed easily.  Moreover,
41    there does not seem to be any reason not to move all libraries into
42    lib during installation.  I originally implemented this directive as a
43    backward-compatibility feature when I first introduced the new CM.
44    Now that things have been stable for a long time and going back to the
45    old CM is not an option, there is no reason to keep it around.)
46    
47    ----------------------------------------------------------------------
48    Name: Matthias Blume (blume (at) tti - c (dot) org)
49    Date: 2003/11/03 16:00:00 CST
50    Tag: blume-20031103-installdir
51    Description:
52    
53    Made installer honor INSTALLDIR variable again.  (Thanks to Chris
54    Richards for pointing out the problem and providing the solution.)
55    
56    ----------------------------------------------------------------------
57    Name: Matthias Blume (blume (at) tti - c (dot) org)
58    Date: 2003/10/01 17:05:00 CDT
59    Tag: blume-20031001-lal-mlrisc
60    Description:
61    
62    MLRISC bug fix from Lal.
63    
64    ----------------------------------------------------------------------
65    Name: Matthias Blume (blume (at) tti - c (dot) org)
66    Date: 2003/09/30 16:10:00 CDT
67    Tag: blume-20030930-primio-bat
68    Description:
69    
70    1. Added openVector, nullRd, and nullWr to PRIM_IO.
71    2. Improved .bat files (for Win32 port) to make things work under Win95.
72       (thanks to Aaron S. Hawley for this one)
73    
74    ----------------------------------------------------------------------
75    Name: Matthias Blume (blume (at) tti - c (dot) org)
76    Date: 2003/09/26 16:05:00 CDT
77    Tag: blume-20030926-wrappriv
78    Description:
79    
80    Added missing wrapper for privilege "primitive" in $smlnj/viscomp/core.cm.
81    
82    ----------------------------------------------------------------------
83    Name: Matthias Blume (blume (at) tti - c (dot) org)
84    Date: 2003/09/26 15:00:00 CDT
85    Tag: blume-20030926-110_43_3
86    Description:
87    
88    - additional cleanup
89    - version number bump, NEW BOOTFILES
90    
91    ----------------------------------------------------------------------
92    Name: Matthias Blume (blume (at) tti - c (dot) org)
93    Date: 2003/09/26 12:00:00 CDT
94    Tag: blume-20030926-ppautoload
95    Description:
96    
97    I modified the read-eval-print loop so that the autoloader gets
98    invoked whenever the prettyprinter tries to look up a symbol that
99    is not currently defined in the toplevel environment but which
100    appears in CM's autoload registry.  As a result, we see far fewer of
101    those ?.Foo.Bar.xxx names in the prettyprinter's output.
102    
103    In addition to this I tried to clean up some pieces of the Basis
104    implementation (e.g., Socket, Word8Array) in order to prevent other
105    instances of these ?.Foo.Bar.xxx names from being printed.
106    
107    The mechanism that picks names for types still needs some work, though.
108    (Right now it seems that if there is a type A.t which is defined to
109    be B.u, but B is unavailable at toplevel, then A.t gets printed as
110    "?.B.u" although the perhaps more sensible solution would be to use
111    "A.t" in this case.  In other words, the prettyprinter should follow
112    a chain of DEFtycs not farther than there are corresponding toplevel
113    names in the current environment.)
114    
115    ----------------------------------------------------------------------
116    Name: Matthias Blume (blume (at) tti - c (dot) org)
117    Date: 2003/09/24 16:31:00 CDT
118    Tag: blume-20030924-installer
119    Description:
120    
121    Another installer tweak:  All the ML code for the installer is now
122    compiled during CMB.make and put into a little library called
123    $smlnj/installer.cm.  The installation then simply invokes
124    
125       sml -m $smlnj/installer.cm
126    
127    and everything happens automagically.
128    
129    Win32:  ML code senses value of environment variable SMLNJ_HOME.
130    Unix:   ML code senses values of environment variables ROOT, CONFIGDIR,
131            and BINDIR.
132    
133    The new scheme guarantees that the ML code responsible for the installation
134    is in sync with the APIs of the main system.  Also, the installer is
135    somewhat faster because the installer script is precompiled.
136    
137    ----------------------------------------------------------------------
138    Name: Matthias Blume (blume (at) tti - c (dot) org)
139    Date: 2003/09/24 15:35:00 CDT
140    Tag: blume-20030924-synsock
141    Description:
142    
143    Added a signature SYNCHRONOUS_SOCKET to basis.cm.  This is like SOCKET
144    but excludes all non-blocking operations.  Defined SOCKET (in Basis)
145    and CML_SOCKET in terms of SYNCHRONOUS_SOCKET.  Removed superfluous
146    implementations of non-blocking operations from CML's Socket
147    structure.
148    
149    ----------------------------------------------------------------------
150    Name: Matthias Blume (blume (at) tti - c (dot) org)
151    Date: 2003/09/24 15:10:05 CDT
152    Tag: blume-20030924-sockets
153    Description:
154    
155    1. Fixed SOCKET API and implementation to match Basis spec.
156       This required changing the internal representation of sockets to one
157       that remembers (for each socket file descriptor) whether it is currently
158       blocking or non-blocking.  This state is maintained lazily (i.e., a system
159       call is made only if the state actually needs to change).
160    
161    2. OS-specific details of sockets were moved into separate files, thus
162       making it possible to unify the bulk of the socket implementations
163       between Unix and Win32.
164    
165    3. CML's socket API changed accordingly.
166       (Note that we need to remove non-blocking functions from this API
167       since they are redundant in the case of CML!)
168    
169    4. CML's socket implementation now makes use of non-blocking functions
170       provided by Basis, thus removing all OS-dependent code from this part
171       of CML.
172    
173    5. Changed Real64.precision from 52 to 53.  Minor cleanup in Real64 code.
174    
175    ----------------------------------------------------------------------
176    Name: Matthias Blume (blume (at) tti - c (dot) org)
177    Date: 2003/09/22 12:10:00 CDT
178    Tag: blume-20030922-110_43_2
179    Description:
180    
181    Made a new interim version and bootfiles for developer's bootstrapping
182    convenience.
183    
184       110.43.2 -- NEW BOOTFILES
185    
186    ----------------------------------------------------------------------
187    Name: Matthias Blume (blume (at) tti - c (dot) org)
188    Date: 2003/09/19 15:55:00 CDT
189    Tag: blume-20030919-cmdir
190    Description:
191    
192    1. new-install.sh -> install.sh
193    2. changed default CM "metadata" directory name to ".cm" (instead of "CM")
194    3. tweaked installer so that another name instead of .cm can be chosen
195       at install time (by setting the CM_DIR_ARC environment variable
196       during installation); once installation is complete, the name is
197       fixed
198    
199    ----------------------------------------------------------------------
200    Name: Matthias Blume (blume (at) tti - c (dot) org)
201    Date: 2003/09/18 16:00:00 CDT
202    Tag: blume-20030918-110_43_1
203    Description:
204    
205    Made a new interim version and bootfiles for developer's bootstrapping
206    convenience.
207    
208       110.43.1 -- NEW BOOTFILES
209    
210    ----------------------------------------------------------------------
211    Name: Matthias Blume (blume (at) tti - c (dot) org)
212    Date: 2003/09/18 15:20:00 CDT
213    Tag: blume-20030918-misc
214    Description:
215    
216    1. Exported fractionsPerSecond etc. from TimeImp (but not from Time as
217       this seems to be controversial at the moment) and used those in
218       Posix.ProcEnv.times.
219    
220    2. Added Time.{from,to}Nanoseconds to Time.
221    
222    3. Improved Real.{from,to}LargeInt by avoiding needless calculations.
223       For example, fromLargeInt never needs to look at more than 3 "big
224       digits" to get its 53 bits of precision.
225    
226    ----------------------------------------------------------------------
227    Name: Matthias Blume (blume (at) tti - c (dot) org)
228    Date: 2003/09/17 16:30:00 CDT
229    Tag: blume-20030917-real32-slices
230    Description:
231    
232    Added an entry to the primitive environment
233    (compiler/Semant/statenv/prim.sml) for int32->real64 conversion and
234    added code to compiler/CodeGen/main/mlriscGen.sml to implement it.
235    
236    Removed some of the "magic" constants in real64.sml and replaced them
237    with code that generates these values from their corresponding
238    integer counterparts.
239    
240    Made all(?) the slice-related changes to the Basis and made everything
241    compile again...
242    
243    ----------------------------------------------------------------------
244    Name: Matthias Blume (blume (at) tti - c (dot) org)
245    Date: 2003/09/15 17:45:00 CDT
246    Tag: blume-20030915-rbase
247    Description:
248    
249    Fixed bug in Real.fromLargeInt.
250    
251    ----------------------------------------------------------------------
252    Name: Matthias Blume (blume (at) tti - c (dot) org)
253    Date: 2003/09/13 18:11:00 CDT
254    Tag: blume-20030913-libinstall
255    Description:
256    
257    Minor bugfix in config/libinstall (set anchor with path to
258    standalone tool after installing it, otherwise libraries that
259    need ml-lex or ml-yacc won't compile the first time the installer
260    runs).
261    
262    ----------------------------------------------------------------------
263    Name: Matthias Blume (blume (at) tti - c (dot) org)
264    Date: 2003/09/12 11:45:00 CDT
265    Tag: blume-20030912-various
266    Description:
267    
268     - fixed bug in Real.toLargeInt
269     - fixed bug in Posix.ProcEnv.times
270     - changed inputLine functions to return an option
271     - minor installer improvements / bugfixes
272     - changed default @SMLalloc parameter for x86/celeron to 64k
273    
274    ----------------------------------------------------------------------
275    Name: Matthias Blume (blume (at) tti - c (dot) org)
276    Date: 2003/09/09 22:00:00 CDT
277    Tag: Release_110_43
278    Description:
279    
280        New working release 110.43.  New bootfiles.
281    
282    ----------------------------------------------------------------------
283    Name: Matthias Blume (blume (at) tti - c (dot) org)
284    Date: 2003/09/09 19:20:00 CDT
285    Tag: blume-20030909-installer
286    Description:
287    
288    Rewrote large parts of config/install.sh in SML (config/libinstall.sml).
289    Modified config/install.bat to take advantage of it.  Also modified
290    config/install.sh (and called it config/new-install.sh) to take advantage
291    of it on Unix systems.  (The SML code is (supposed to be) platform-
292    independent.)
293    
294    The installer can now install everything under Win32
295    as well as under *nix as long as it compiles.
296    
297    Other changes:
298    
299      - made CML compile again under Win32
300      - made eXene compile under Win32 (by providing a fake structure UnixSock
301        and by using OS.Process.getEnv instead of Posix.ProcEnv.getenv)
302      - fixed a bug in nowhere: it assumed that type OS.Process.status is the
303        same as type int;  under Win32 it isn't
304      - fixed some slice-related problems in the win32-specific parts of CML
305      - added a functor argument "sameVol" to os-path-fn.sml in the Basis
306        (under Win32, the volume name is case-insensitive, and the
307        OS.Path code compares volume names for equality)
308    
309    ----------------------------------------------------------------------
310    Name: Matthias Blume (blume (at) tti - c (dot) org)
311    Date: 2003/09/08 11:55:00 CDT
312    Tag: blume-20030908-fullpath
313    Description:
314    
315    Made Win32 version of OS.FileSys.fullPath return current directory
316    when given an empty string.  This is what the spec says, and incidentally,
317    CM depends on it.  (CM otherwise goes into an infinite loop in certain
318    cases when presented with the name of a non-existing .cm file.)
319    
320    ----------------------------------------------------------------------
321    Name: Matthias Blume (blume (at) tti - c (dot) org)
322    Date: 2003/09/04 16:30:00 CDT
323    Tag: blume-20030905-slices-etc
324    Description:
325    
326      1. Changed interface to vectors and arrays in Basis to match
327         (draft) Basis spec.
328      2. Added signatures and implementations of slices according to
329         Basis spec.
330      3. Edited source code throughout the system to make it compile again
331         under 1. and 2.  (In some cases code had to be added to have it
332         match the new signatures.)
333      4. MLRISC should be backward-compatible: the copies of the originals
334         of files that needed to change under 3. were retained, the .cm files
335         check the compiler version number and use old versions when
336         appropriate.
337      5. Changed type of OS.FileSys.readDir and Posix.FileSys.readdir to
338         dirstream -> string option (in accordance with Basis spec).
339      6. When generating code that counts lines, ml-lex used function
340         CharVector.foldli, taking advantage of its old interface.
341         This has been replaced with the corresponding code from
342         CharVectorSlice.  (html-lex must be re-lexed!)
343      7. BitArray in smlnj-lib/Util has been extended/modified to match the
344         new MONO_ARRAY signature.  (Do we need BitArraySlice?)
345      8. Removed temporary additions (fromInternal, toInternal) from the
346         (now obsolete) IntInf in smlnj-lib/Util.
347      9. Cleaned up structure Byte.
348     10. Added localOffset, scan, and fromString to Date (according to spec).
349         Cleaned/corrected implementation of Date.
350         (Still need to check for correctness; implement better canonicalizeDate.)
351     11. Added "scan" to signature IEEE_REAL.
352     12. Some improvements to IntInf [in particular: efficiency-hack for
353         mod and rem when second operand is 2 (for parity checks).]
354     13. Changed representation of type Time.time, using a single IntInf.int
355         value counting microseconds.  This considerably simplified the
356         implementation of structure Time.  We now support negative time
357         values; scan and fromString handle signs.
358     14. Functor PrimIO now takes two additional arguments (VectorSlice and
359         ArraySlice).
360    
361    ----------------------------------------------------------------------
362    Name: Matthias Blume (blume (at) tti - c (dot) org)
363    Date: 2003/08/28 17:00:00 CDT
364    Tag: blume-20030828-intinf
365    Description:
366    
367    This is a major update which comes with a version number bump
368    (110.42.99 -- yes, we are really close to 110.43 :-), NEW BOOTFILES,
369    and an implementation of IntInf in the Basis.
370    
371    There are a fairly large number of related changes and updates throughout
372    the system:
373    
374    Basis:
375            - Implemented IntInf.
376            - Made LargeInt a projection of IntInf (by filtering through INTEGER).
377            - Added some missing Real64 operations, most notably Real.toLargeInt.
378            - Added FixedInt as a synonym for Int32.
379    
380    compiler:
381            * Added support for a built-in intinf type.
382              - literals
383              - pattern matching
384              - conversion shortcuts (Int32.fromLarge o Int.toLarge etc.)
385              - overloading on literals and operations
386    
387            This required adding a primitive type intinf, some additional
388            primops, and implementations for several non-trivial intinf
389            operations in Core.  (The intinf type is completely abstract
390            to the compiler; all operations get delegated back to the Core.)
391    
392            * Intinf equality is handled by polyequal.  However, the compiler
393            does not print its usual warning in this case (since polyequal
394            is the right thing to do there).
395    
396            * Improved the organization of structure InlineT.
397    
398            * A word about conversion primops:
399            If conversions involving intinf do not cancel out during
400            CPS contract, then the compiler must insert calls to Core functions.
401            Since all core access must be resolved already during the FLINT
402            translate phase, it would be too late a the time of CPS contract
403            to add new Core calls.  For this reason, conversion primops
404            for intinf carry two arguments:  1. the numeric argument that
405            they are supposed to convert, and 2. the Core function that
406            can help with this conversion if necessary.  If CPS contract
407            eliminates a primop, then the associated Core function becomes
408            dead and goes away.  Intinf conversion primops that do not get
409            eliminated by CPS contract get rewritten into calls of their
410            core functions by a separate, new phase.
411    
412    interactive system:
413            - Control.Print.intinfDepth controls max length of intinf constants
414            being printed. (Analogous to Control.Print.stringDepth.)
415            - Cleanup in printutil and pputil: got rid of unused stuff and
416            duplicates; replaced some of the code with code that makes better
417            use of library functionality.
418    
419    CM:
420            Bugfix: parse-errors in init group (system/smlnj/init/init.cmi)
421            are no longer silent.
422    
423    CKIT:
424            Fixed mismatched uses of Int32 and LargeInt.  I always decided
425            in favor of LargeInt -- which is now the same as IntInf.
426            CKIT-knowledgable people should check whether this is what's
427            intended and otherwise change things back to using Int32 or
428            FixedInt.
429    
430    Throughout the code:
431            Started using IntInf.int literals and built-in operations
432            (e.g., comparison with 0) where this seems appropriate.
433    
434    
435    ----------------------------------------------------------------------
436    Name: Dave MacQueen (dbm@cs.uchicago.edu)
437    Date: 2003/08/13 11:36:00 CDT
438    Tag: dbm-20030813-mcz-merge1
439    Description:
440    
441    Merging changes from the mcz-branch development branch into trunk.
442    These changes involve replacement of the emulated old prettyprinter
443    interface with direct use of the SML/NJ Lib PP library, and fixing
444    of a couple of bugs (895, 1186) relating to error messages.  A new
445    prettyprinter for ast datatypes (Elaborator/print/ppast.{sig,sml})
446    has been added.
447    
448    ----------------------------------------------------------------------
449    Name: Matthias Blume (blume (at) tti - c (dot) org)
450    Date: 2003/08/11 15:45:00 CDT
451    Tag: blume-20030811-windows
452    Description:
453    
454    Version number bumped to 110.42.9.  NEW BOOTFILES!!!
455    
456        http://smlnj.cs.uchicago.edu/dist/working/110.42.9/
457    
458    This patch restores SML/NJ's ability to run under win32.  There are a
459    number of changes, including fixes for several bugs that had gone
460    unnoticed until now:
461    
462      - uname "CYGWIN_NT*" is recognized as win32 (This is relevant only when
463        trying to run the win32 version from within cygwin.)
464    
465      - There are a number of simple .bat scripts that substitute for their
466        corresponding Unix shell-scripts.  (See below.)
467    
468      - The internals of ml-build have been modified slightly.  The main
469        difference is that instead of calling ".link-sml" (or link-sml.bat)
470        using OS.Process.system, the ML process delegates this task back
471        to the script.  Otherwise problems arise in mixed environments such
472        as Cygwin where scripts look and work like Unix scripts, but
473        where OS.Process.system cannot run them.
474    
475      - In CM, the srcpath pickler used native pathname syntax -- which
476        is incorrect in the case of cross-compilation.  The new pickle format
477        is independent of platform-specific naming conventions.
478    
479      - Path configuration files (such as lib/pathconfig) can now choose
480        between native and standard syntax.  Placing a line of the form
481    
482            standard!
483    
484        into the file causes all subsequent paths to be interpreted using
485        CM standard pathname syntax (= Unix conventions); a line
486    
487            native!
488    
489        switches back to native style.  This was needed so that
490        path config files can be written portably, see src/system/pathconfig.
491    
492      - Runtime system:
493    
494          - win32-filesys.c:  get_file_time and set_file_time now
495            access modification time, not creation time.
496    
497          - I/O code made aware of new array representation.
498    
499          - Bug fixes in X86.prim.masm.
500    
501       - src/system/makeml made aware of win32. (For use under cygwin
502            and other Unix-environments for windows.)
503    
504       - In Basis, fixed off-by-one error in win32-io.sml (function vecF)
505         which caused BinIO.inputAll to fail consistently.
506    
507    .bat scripts:
508    
509       Windows .bat scripts assume that SMLNJ_HOME is defined.
510    
511       - sml.bat, ml-yacc.bat, ml-lex.bat:  Driver scripts for standalone
512         applications (sml, ml-yacc, ml-lex).
513       - ml-build.bat: analogous to ml-build.
514       - config\install.bat:  Analogous to config/install.sh.  This requires
515         that SMLNJ_HOME is set and that Microsoft Visual C is ready to use.
516         (nmake etc. must be on the path, and vcvars32 must have been run.)
517         Moreover, sources for ml-lex and ml-yacc need to exist under src,
518         and the bootfile hierarchy must have been unpacked under
519         sml.boot.x86-win32.
520         The script is very primitive and does a poor job at error checking.
521         It only installs the base system, ml-lex, and ml-yacc.  No other
522         libraries are being installed (i.e., you get only those that
523         are part of the compiler.)
524       - link-sml.bat:  analogous to .link-sml, but not currently used
525    
526    Unrelated bug fixes:
527    
528      - ml-nlffigen now exports structures ST_* corresponding to incomplete
529        types.
530      - Added getDevice to PP/src/pp-debug-fn.sml.  (Would not compile
531        otherwise.)
532    
533    ----------------------------------------------------------------------
534    Name: Dave MacQueen (macqueen@cs.uchicago.edu)
535    Date: 2003/06/17
536    Tag: macqueen-20030617-bug895
537    Description:
538    
539    Modified compiler/Elaborator/print/pptype.sml to fix bug 895.
540    Tag will be used for new development branch (mcz-branch) for
541    use by MacQueen, (Lucasz) Zairek, and (George) Cao at uchicago.
542    
543    ----------------------------------------------------------------------
544    Name: Matthias Blume (blume (at) tti - c (dot) org)
545    Date: 2003/05/27 16:55:00 CDT
546    Tag: blume-20030527-polyeq
547    Description:
548    
549    Tried to eliminated most cases of polymorphic equality.
550    
551    ----------------------------------------------------------------------
552    Name: Matthias Blume (blume (at) tti - c (dot) org)
553    Date: 2003/05/21 17:45:00 CDT
554    Tag: blume-20030517-complete
555    Description:
556    
557    Two changes:
558    
559      1. Added a flag for controlling whether non-exhaustive bindings will
560         be treated as errors (default is false).
561      2. Cleaned up the *entire* source tree so that CMB.make goes through
562         without a single non-exhaustive match- or bind warning.
563    
564    ----------------------------------------------------------------------
565    Name: Matthias Blume (blume (at) tti - c (dot) org)
566    Date: 2003/05/17 10:20:00 CDT
567    Tag: blume-20030517-absyn
568    Description:
569    
570    1. Added cases for IF, WHILE, ANDALSO, and ORELSE to Absyn.
571    
572       This mainly affects the quality of error messages.  However, some
573       of the code is now more straightforward than before. (Treatment of
574       the above four constructs in translate.sml is much simpler than
575       the "macro-expansion" that was going on before.  Plus, the mach-
576       compiler no longer gets invoked just to be able to compile an
577       if-expression.)
578    
579    2. The ErrorMsg.Error exception is now caught and absorbed by the
580       interactive loop.
581    
582    ----------------------------------------------------------------------
583    Name: Allen Leung
584    Date: 2003/05/16 13:05:00 CDT
585    Tag: leunga-20030516-cygwin-runtime
586    Description:
587    
588        Ported the runtime system to cygwin, which uses the unix
589    x86-unix bin files.  Missing/buggy features:
590    
591       o getnetbyname, getnetbyaddr: these functions seem to be missing in
592         the Cygwin library.
593       o Ctrl-C handling may be flaky.
594       o Windows system calls and Windows I/O are not supported.
595    
596       A new set of binfiles is located at:
597    
598         http://www.dorsai.org/~leunga/boot.x86-unix.tgz
599    
600       This is only needed for bootstrapping the cygwin version of smlnj.
601       Other x86 versions can use the existing binfiles.
602    
603    ----------------------------------------------------------------------
604    Name: Matthias Blume
605    Date: 2003/04/08 15:42:00 CDT
606    Tag: blume-20030408-listpair
607    Description:
608    
609    1. Added a target 'mlrisc' to installer.
610    
611    2. Added missing elements to structure ListPair.
612    
613    ----------------------------------------------------------------------
614    Name: Allen Leung
615    Date: 2003/01/07 10:40:00 EST
616    Tag: leunga-20030107-int-rem
617    Description:
618    
619    Fixed a bug in Int.rem(x,y) where y is a power of 2 on x86.
620    The arguments to the SUBL instruction were swapped.
621    
622    ----------------------------------------------------------------------
623    Name: Matthias Blume
624    Date: 2002/12/12 16:25:00 EST
625    Tag: blume-20021212-risc-ra
626    Description:
627    
628    Fixed a serious bug in the rewrite code for FP spilling/reloading that
629    sent the RA into an infinite loop when floating point registers get
630    spilled.  (Because of this bug, e.g., nucleic stopped compiling between
631    110.37 and 110.38.)
632    There was another set of potential problems related to the handling of
633    MLRISC annotations (but those did not yet cause real problems, apparently).
634    
635    ----------------------------------------------------------------------
636    Name: Matthias Blume
637    Date: 2002/12/06 22:40:00 EST
638    Tag: blume-20021206-cm-fileid
639    Description:
640    
641    Added a call of SrcPath.sync at the beginning of Parse.parse (in CM).
642    This fixes the problem of CM getting confused by files that suddenly
643    change their identity (e.g., by getting unlinked and recreated by some
644    text editor such as vi).  There might be a better/cheaper/cleaner way
645    of doing this, but for now this will have to do.
646    
647    ----------------------------------------------------------------------
648    Name: Matthias Blume
649    Date: 2002/10/28 09:50:00 EST
650    Tag: blume-20021028-typecheck
651    Description:
652    
653    Exported structure Typecheck from $smlnj/viscomp/core.cm.
654    
655    ----------------------------------------------------------------------
656    Name: Matthias Blume
657    Date: 2002/10/17 09:10:00 EDT
658    Tag: Release_110_42
659    Description:
660    
661    In good old tradition, there has been a slight hiccup so that we have
662    to patch 110.42 after the fact.   The old release tag has been replaced
663    (see below).
664    
665    The change solves a problem with two competing approaches the
666    configuration problem regarding MacOS 10.1 vs. MacOS 10.2 which got in
667    each other's way.
668    
669    This change only affects the runtime system code and the installer script.
670    (No new bootfiles.)
671    
672    ----------------------------------------------------------------------
673    Name: Matthias Blume
674    Date: 2002/10/16 12:00:00 EDT
675    Tag: Release_110_42_removed
676    Description:
677    
678    New working release.  New bootfiles.
679    
680    ----------------------------------------------------------------------
681    Name: Matthias Blume
682    Date: 2002/10/10 13:10:00 EDT
683    Tag: blume-20021010-ppc-divs
684    Description:
685    
686    The mltree operator DIVS must be implemented with an overflow check on
687    the PPC because the hardware indicates divide-by-zero using "overflow" as
688    well.
689    
690    ----------------------------------------------------------------------
691    Name: Matthias Blume
692    Date: 2002/07/23 11:45:00
693    Tag: blume-20020723-smlnj-home
694    Description:
695    
696    Sml now senses the SMLNJ_HOME environment variable.  If this is set,
697    then the bin dir is assumed to be in $SMLNJ_HOME/bin and (unless
698    CM_PATHCONFIG is also set), the path configuration file is assumed
699    to be in $SMLNJ_HOME/lib/pathconfig.  This way one can easily move
700    the entire tree to some other place and everything will "just work".
701    
702    (Companion commands such as ml-build and ml-makedepend also sense this
703    variable.)
704    
705    ----------------------------------------------------------------------
706    Name: Matthias Blume
707    Date: 2002/07/12 21:19:00 EDT
708    Tag: blume-20020712-liveness
709    Description:
710    
711    Exported two useful "step" functions from liveness module (MLRISC).
712    
713    ----------------------------------------------------------------------
714  Name: Matthias Blume  Name: Matthias Blume
715  Date: 2002/07/05 16:00 EDT  Date: 2002/07/05 16:00 EDT
716  Tag: Release_110_41  Tag: Release_110_41

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