/[cmucl]/src/general-info/release-19b.txt
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1 ========================== C M U C L 19 b =============================
2
3 [--- WORK IN PROGRESS --- DO NOT DISTRIBUTE ---]
4
5 The CMUCL project is pleased to announce the release of CMUCL 19b.
6 This is a major release which contains numerous enhancements and
7 bugfixes from the 19a release.
8
9 CMUCL is a free, high performance implementation of the Common Lisp
10 programming language which runs on most major Unix platforms. It
11 mainly conforms to the ANSI Common Lisp standard. CMUCL provides a
12 sophisticated native code compiler; a powerful foreign function
13 interface; an implementation of CLOS, the Common Lisp Object System,
14 which includes multimethods and a metaobject protocol; a source-level
15 debugger and code profiler; and an Emacs-like editor implemented in
16 Common Lisp. CMUCL is maintained by a team of volunteers collaborating
17 over the Internet, and is mostly in the public domain.
18
19 New in this release:
20
21 * Feature enhancements:
22 - Added a much faster and much less consy bignum printer and a
23 faster bignum reader.
24 - Extended REQUIRE to support *MODULE-PROVIDER-FUNCTIONS* from
25 SBCL.
26 - NetBSD supported.
27 - SIMPLE-STREAM fixes:
28 o READ-SEQUENCE and WRITE-SEQUENCE for
29 signed-byte/unsigned-byte 8 streams.
30 o Memory-mapped file streams.
31 - Large file support for Solaris, so CMUCL can handle files
32 larger than 2GB.
33 - Support for Mac OS X.
34 - A much faster GCD implementation.
35 - A faster Karatsuba multiplier when the number of words of the
36 bignums is not a power of 2. (Break-even is still around 1500
37 bits, though.)
38 - New command-line switch -debug-lisp-search to show how lisp is
39 searching for its core file.
40 - DEBUG-RETURN implemented which allows you to return a value
41 from function. Only enabled with DEBUG 3.
42 - Lazy sxhash on symbols implemented for ppc.
43 - Pretty-printer for LOOP.
44 - Added some more pprinters for various forms.
45 - Callbacks supported on Mac OS X.
46 - Loop analysis code added to the compiler. It's incorporated
47 into the build, but not used in any way yet.
48 - Errors from socket functions signal a SOCKET-ERROR instead of
49 ERROR.
50 - Efficiency notes are no longer printed if inhibit-warnings >=
51 2.5.
52
53 * Numerous ANSI compliance fixes:
54 - FILE-AUTHOR should signal errors appropriately.
55 - CMUCL was computing the wrong value for some special functions
56 when the argument was on the branch cut for the function.
57 - MULTIPLE-VALUE-BIND accepts &REST and friends in the var list.
58 - When constructing logical pathnames, all components will be
59 automatically upcased. Needed for print/read consistency, and
60 fixes an issue with ASDF and logical pathnames.
61 - Numerous fixes to the float printer, including a new float
62 printer.
63 - Justification (~< ~>) works better.
64 - ~V with the value of NIL in format strings is treated to mean
65 as if it weren't given at all, as specified by ANSI CL.
66 - Characters print consistently with ~:C and ~S.
67 - Numerous bug fixes for pretty-printing and format strings.
68 - Pathnames are now printed with #P instead of #p.
69 - The types COMPLEX and (COMPLEX REAL) are the same now.
70 - UPGRADED-COMPLEX-PART-TYPE returns RATIONAL for integer types
71 now. (CMUCL doesn't really have a (COMPLEX INTEGER) type).
72 - When a pathname can't be printed readably, signal a
73 PRINT-NOT-READABLE condition
74 - Printing arrays readably was sometimes wrong.
75 - FOR-AS-ON-LIST works with dotted lists.
76 - DEFSTRUCT predicates for list structures don't produce errors
77 anymore on dotted or short lists.
78 - UNBOUND-SLOT condition no longer takes the :slot keyword. It
79 uses the ANSI-specified :name keyword. This is not backward
80 compatible!
81 - MAKE-SYMBOL takes STRING's, not just SIMPLE-STRING's.
82 - PPRINT-POP did not return NIL when the list arg to
83 PPRINT-LOGICAL-BLOCK was NIL.
84 - Signal appropriate error conditions instead of a plain error
85 condition in many situations.
86 - TYPECASE was treating the type T as an otherwise clause even
87 though it was not the last clause. It should be just a
88 regular clause.
89 - ASIN, ACOS, ACOSH, and ATANH were returning the wrong values
90 when the arg was a real number on the branch cut.
91 - Missed some places where loop variables were duplicated, which
92 should signal a program-error.
93 - LOOP INITIALLY clauses occur after variable initialization for
94 FOR, WITH, and AS clauses, as required by ANSI CL.
95 - Format bugs in ~{ and ~@[X~], as noted by ansi-tests, have
96 been fixed.
97
98 * Numerous bugfixes:
99 - FFLOOR and friends preserve the sign of the arg, so -0.0 is
100 returned for negative args.
101 - EXPT sometimes returne NaN instead of 1 when the power was 0.
102 - Weak pointers don't have O(n^2) GC behavior anymore.
103 - X11 authorization changes to solve problems seen with servers
104 that don't listen to TCP connection requests.
105 - unix-read fix
106 - The compiler would give an error on deriving the result type
107 of RANDOM when the arg to RANDOM was a union type.
108 - "~*~" was not being parsed to mean a wildcard version.
109 - UNIX-GETPWUID implemented for Darwin. Needed for FILE-AUTHOR.
110 - The compiler no longer gives errors when deriving the result type of
111 coerce when converting a integer to a float that would not fit
112 in a float.
113 - Fix bug in reading from streams with element-type SIGNED-BYTE
114 for sizes greater than 32: Positive numbers were incorrectly
115 being returned as negative.
116 - REMOVE-DUPLICATES was not honoring the :START option.
117 - PPRINT-LOGICAL-BLOCK sometimes didn't close the block properly
118 because PPRINT-EXIT-IF-LIST-EXHAUSTED caused an early exit.
119 - Macro expansion was not looking in the local environment
120 properly for local definitions.
121 - Circular Weak pointers can now be printed when *print-circle*
122 is T.
123 - "foo.lisp.*" is interpreted to have version :wild, just like
124 "foo.lisp.~*~".
125 - DIRECTORY will report all versions of a file if the pathname
126 has version :wild.
127 - Fixed bug with CLX on MacOS X where the WM-SIZE-HINTS were
128 larger than CLX expected. Replaced card16 with card32.
129 - Callbacks on sparc that returned double-floats were sometimes
130 causing a sigbus error.
131 - Type specifiers like (float low high) where low and high were
132 outside the range of single-float numbers no longer cause
133 compiler errors.
134 - Fix source-form reporting in the disassembler.
135 - Arrays in fasl files had non-NIL fill-pointer. Make them NIL.
136 - FILE-POSITION was incorrectly set for simple-streams after a
137 READ-VECTOR.
138 - Printing 1d23 no longer causes an error.
139 - Work around the problem of (concatenate 'fixnum '(1)) causing
140 deletion of all following code.
141 - A directory with a component of :WILD was not correctly
142 handled.
143 - CREATE-INET-LISTENER was missing a call to htonl.
144
145 * Other changes:
146 - Infinite loops in map and friends caused by specifying
147 sequence types that are too hairy for CMUCL should no longer
148 occur. But CMUCL will now signal an error, which may not be
149 compliant either.
150 - Compiler is a little smarter in deriving the result type of
151 MAP.
152
153 * Improvements to the PCL implementation of CLOS:
154
155 * Improvements to Hemlock, the Emacs-like editor:
156
157 * Changes to rebuilding procedure:
158
159 * Deprecated features:
160
161 This release is not binary compatible with code compiled using CMUCL
162 19a; you will need to recompile FASL files.
163
164 See <URL:http://www.cons.org/cmucl/> for download information,
165 guidelines on reporting bugs, and mailing list details.
166
167
168 We hope you enjoy using this release of CMUCL!
169

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