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1 emarsden 1.72 ========================== C M U C L 19 a =============================
2 gerd 1.1
3     [--- WORK IN PROGRESS --- DO NOT DISTRIBUTE ---]
4    
5     The CMUCL project is pleased to announce the release of CMUCL 19a.
6     This is a major release which contains numerous enhancements and
7     bugfixes from the 18e 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 toy 1.50 - Stack overflow checking added for FreeBSD/x86, Linux/x86 and
23     Solaris. Code that makes the control stack overflow (for
24     example due to unbounded recursion) will lead to a
25     STORAGE-ERROR being signaled, instead of making CMUCL crash.
26 gerd 1.1 - LISP:FIND-CLASS and LISP:CLASS-OF now return CLOS classes. The
27 emarsden 1.21 symbols LISP:STANDARD-CLASS, LISP:BUILT-IN-CLASS, and
28 gerd 1.3 LISP:STRUCTURE-CLASS name CLOS classes. It is no longer
29 gerd 1.1 necessary to SHADOWING-IMPORT these from PCL when doing MOP
30     programming, and it fixes some non-compliances as well.
31 emarsden 1.29 - Package locks: a package whose EXT:PACKAGE-LOCK is enabled
32     non-NIL is protected against changes in its structure (list of
33     exported symbols, use-list etc). Symbols in a package whose
34     EXT:PACKAGE-DEFINITION-LOCK is enabled are protected against
35     redefinition.
36 gerd 1.2 - Weak hash tables have been added for x86 systems.
37 gerd 1.4 - Local functions are now named (FLET <name> ...) or
38     (LABELS <name> ...).
39 gerd 1.80 - Compiler checking control string and number of args to FORMAT,
40     ERROR and WARN.
41 gerd 1.27 - TRACE automatically using encapsulation when function-end
42     breakpoints cannot be used.
43 gerd 1.28 - INSPECT working on CLOS instances.
44 toy 1.50 - Callbacks from foreign code to Lisp. Implemented for x86 and
45     sparc.
46 gerd 1.31 - Functions like GETHASH that are used in the implementation of
47     TRACE can now be traced. See also
48     DEBUG:*TRACE-ENCAPSULATE-PACKAGE-NAMES*.
49 gerd 1.39 - New facility for encapsulating functions, FWRAPPERS;
50     see also the CMUCL User Manual.
51     - TRACE and PROFILE have been reimplemented using fwrappers,
52     with the effect of tracing and profiling now working more
53     nicely together.
54     - When a profiled function is redefined, it is re-profiled.
55 toy 1.50 - A basic implementation of simple-streams added. Some
56     functionality may be missing.
57 gerd 1.51 - UNIX:UNIX-LSEEK working with files > 2G on BSDs.
58 gerd 1.52 - Type declarations on local bindings of special variables no
59     longer being ignored.
60 gerd 1.61 - DISASSEMBLE disassembling closure/funcallable instance
61     functions.
62     - (SETF EXT:WEAK-POINTER-VALUE) has been added.
63 gerd 1.63 - CMUCL no longer entering an infinite loop when dumping
64     circular constant lists to fasl files.
65 gerd 1.68 - COMPILE-FILE-PATHNAME's BYTE-COMPILE keyword arg defaulting
66     to *BYTE-COMPILE-DEFAULT* like COMPILE-FILE.
67 toy 1.78 - Added VOPs for CHAR=, CHAR<, and CHAR> when the second arg is a
68     constant character.
69     - Added missing VOPs for Sparc for array refs with a constant
70     index.
71     - Lisp binary will also look at the PATH envvar to find out it's
72     own location which is used to find other needed files.
73 toy 1.81
74 gerd 1.1 * Numerous ANSI compliance fixes:
75 gerd 1.5 - Many bugs in CMUCL's type system detected by Paul Dietz'
76     ANSI test suite have been fixed.
77     - Non-keyword keyword names in lambda lists are now accepted.
78 gerd 1.6 - Condition slot initialization fixed for the case that two
79     or more slots have the same :INITARG.
80 gerd 1.7 - Initforms are now evaluated once only during condition slot
81     initialization.
82     - USE-VALUE, STORE-VALUE, CONTINUE behavior corrected in presence
83     of multiple restarts having the same name.
84     - RESTART-CASE's interaction with local macros fixed.
85     - Interaction of COMPUTE-RESTARTS and RESTART-CASE fixed in
86     presence of multiple restarts having the same name.
87 gerd 1.8 - Condition slot readers/writers are generic functions.
88 gerd 1.9 - &WHOLE, &REST, &BODY in macro lambda lists can be followed
89     by destructuring patterns. The previous behavior of &BODY
90     when followed by (<body> <declarations> <doc>) is available
91     through the new lambda-list keyword EXT:&PARSE-BODY.
92 gerd 1.10 - ELT now signals an error in safe code when used on lists
93     with an out-of-bounds index.
94     - Accessing arrays in compiled code with out-of-bounds indices
95     now signals a TYPE-ERROR.
96 gerd 1.11 - DECLARE no longer being a special operator.
97 gerd 1.16 - DEFINE-CONDITION accepts slot option :DOCUMENTATION.
98 gerd 1.18 - Behavior of (... &KEY &ALLOW-OTHER-KEYS) fixed for
99     DESTRUCTURING-BIND and macros.
100 gerd 1.19 - Stricter checking of keyword argument list in CLOS methods.
101 gerd 1.20 - &ENVIRONMENT variable bound bound before other vars, regardless
102     of where it appears in a lambda-list.
103 gerd 1.22 - VALUES types no longer accepting &KEY or &ALLOW-OTHER-KEYS.
104     - THE conforming to ANSI.
105 gerd 1.24 - SLOT-EXISTS-P can be used with conditions.
106 gerd 1.32 - REMOVE-METHOD always returning the generic function passed to it.
107     - Standard methods for STANDARD-OBJECT and STRUCTURE-OBJECT
108     defined on MAKE-LOAD-FORM.
109     - Compliant MAKE-LOAD-FORM-SAVING-SLOTS.
110 gerd 1.37 - DEFSTRUCT recording slot-names as specified by users.
111 gerd 1.40 - Generic function call keyword argument checking according to
112     ANSI 7.6.5.
113 gerd 1.45 - CALL-NEXT-METHOD without arguments being called with original
114     arguments when method parameters are changed with SETQ.
115     - When CALL-NEXT-METHOD is called with arguments, an error is
116     signaled in safe code when the set of methods applicable to
117     CALL-NEXT-METHOD's arguments is different from the set of
118     methods applicable to the original method arguments.
119 gerd 1.46 - FIND-METHOD signaling an error when called with specializers
120     not corresponding to the number of required arguments of the
121     supplied generic function.
122 gerd 1.48 - TYPE-OF returning KEYWORD for keywords, STANDARD-CHAR for
123     standard characters, BOOLEAN for T, (INTEGER <N> <N>) for
124     integers N, non-list types for functions, and CLOS classes for
125     instances whose class doesn't have a proper name.
126 gerd 1.49 - Class precedence list of NULL not having SYMBOL before LIST,
127     precedence list of STANDARD-METHOD not having METHOD before
128     STANDARD-OBJECT.
129 gerd 1.55 - ADD-METHOD returning its first argument, the generic function.
130 gerd 1.54 - DEFCLASS redefining a class with the given name only if the
131     name is the proper name of an existing class.
132 gerd 1.57 - KEYWORD package no longer having nickname "".
133 gerd 1.60 - COMMON-LISP-USER package no longer having nickname USER.
134     - COMMON-LISP package no longer having nickname LISP; LISP
135     and COMMON-LISP are now separate packages.
136 gerd 1.58 - SLOT-VALUE, (SETF SLOT-VALUE), SLOT-BOUNDP, SLOT-MAKUNBOUND
137     returning values specified by the standard when SLOT-UNBOUND
138     or SLOT-MISSING are called and return.
139 gerd 1.65 - NTH and NTHCDR accepting bignums as first argument.
140 gerd 1.66 - First arg of CERROR may be a function.
141 gerd 1.67 - Lambda-lists of the form (X . Y) in DESTRUCTURING-BIND and macros
142     are now equivalent to (X &REST Y).
143 gerd 1.69 - LAST, BUTLAST, NBUTLAST accepting bignum counts.
144 gerd 1.71 - WITH-OUTPUT-TO-STRING accepting :ELEMENT-TYPE.
145 gerd 1.75 - FIXNUM no longer naming a function.
146 toy 1.78 - MAKE-STRING-OUTPUT-STREAM accepts :ELEMENT-TYPE.
147 gerd 1.1
148     * Numerous bugfixes:
149 gerd 1.12 - NSET-EXCLUSIVE-OR returns the same results as SET-EXCLUSIVE-OR
150     wrt to duplicate elements.
151 gerd 1.11 - Forms like (MULTIPLE-VALUE-BIND 'LIST) no longer trapping
152     an internal compiler error when compiled.
153 gerd 1.16 - PARSE-INTEGER signaling PARSE-ERROR.
154     - Compiler eliminating some type checks in safe code.
155 gerd 1.41 - Byte-compiler and -interpreter not handling C:&MORE.
156     - Some TYPE-ERRORs being signaled with unbound slots, which
157     made them undisplayable.
158 gerd 1.62 - Structure predicates no longer signaling an error when applied
159     to obsolete instances.
160 gerd 1.64 - A DEFTRANSFORM for array bounds checking had an off-by-1 error.
161 toy 1.78 - Compiler was not properly deriving the type of FTRUNCATE in all
162     cases.
163     - Fixed error wherein certain uses of 2 arg ATAN caused a
164     compiler error on x86.
165 gerd 1.84 - Compiler wrongly signaling a type error in VOLATILE-INFO-LOOKUP or
166     COMPACT-INFO-LOOKUP for hash values equal to MOST-POSITIVE-FIXNUM.
167 gerd 1.85 - FFLOOR and FCEILING return types sometimes being inferred as
168     being the nil type.
169 gerd 1.1
170     * Other changes:
171 emarsden 1.72 - CREATE-REQUEST-SERVER has an additional :reuse-address keyword
172     argument.
173 emarsden 1.21 - Removed obsolete alias from MAKE-VECTOR to MAKE-ARRAY
174 emarsden 1.44 - the signature of *COMPILER-NOTIFICATION-FUNCTION* has changed;
175     it now has an extra argument that describes the nature of the
176     error or warning.
177 toy 1.78 - File versioning occurs when the version component is :NEWEST,
178 toy 1.56 and Emacs style file versions are created: foo.bar.~N~, where
179     the larger N is newer. foo.bar is the newest version.
180     - Converting namestrings to pathnames now get a version component
181     of NIL instead of :NEWEST.
182 toy 1.78 - *DEFAULT-PATHNAME-DEFAULTS* has a version component of
183     :UNSPECIFIC instead of :NEWEST so versioning is disabled by
184 toy 1.56 default to preserve current behavior. Set the version to
185 toy 1.78 :NEWEST to create versions.
186 gerd 1.73 - LDB backtrace on x86.
187 gerd 1.82 - DYNAMIC-EXTENT support on x86 and sparc. Stack-allocation can
188     be controlled by the setting of
189     EXT:*TRUST-DYNAMIC-EXTENT-DECLARATIONS*. See also the CMU User
190     Manual. Be warned that all bets are off if a stack-allocated
191     object or parts of it escape; CMUCL might crash or format your
192     hard disk.
193     - Generational GC (gencgc) available for Sparc/Solaris on an
194 toy 1.81 experimental basis. Despite the name and feature, it is not
195     conservative.
196 gerd 1.1
197     * Numerous improvements to the PCL implementation of CLOS:
198     - Gerd's PCL has been added, which fixes numerous bugs and ANSI/
199     AMOP non-compliances, and adds various new optimizations (also
200     see the CMU User Manual).
201 gerd 1.2 - PCL's class hierarchy has been changed to conform to AMOP, for
202     instance, GENERIC-FUNCTION is now a subclass of
203     STANDARD-OBJECT.
204 gerd 1.4 - ENSURE-CLASS-USING-CLASS's argument list has been changed
205     to conform to AMOP.
206 gerd 1.5 - COMPUTE-EFFECTIVE-SLOT-DEFINITION now takes a slot name as
207     argument, for AMOP compliance.
208 gerd 1.9 - SUBTYPEP works in presence of forward-referenced classes.
209 gerd 1.13 - Accessing slots of specialized parameters in (SETF
210     SLOT-VALUE-USING-CLASS) methods works.
211 gerd 1.14 - DIRECT-SLOT-DEFINITION-CLASS and EFFECTIVE-SLOT-DEFINITION-CLASS
212     AMOP compliant.
213 gerd 1.15 - ALLOCATE-INSTANCE working with structures defined with DEFSTRUCT.
214 gerd 1.23 - With (DEFGENERIC FOO (&REST X &KEY)) (DEFMETHOD FOO (&REST X) X),
215     (FOO 1) now signals an error.
216 gerd 1.33 - Methods with &OPTIONAL arguments detecting too many args.
217 gerd 1.35 - DEFMETHOD and DEFGENERIC detecting doubled lambda variables.
218 gerd 1.34 - DEFGENERIC :ARGUMENT-PRECEDENCE-ORDER option checking.
219     - SLOT-VALUE, (SETF SLOT-VALUE), SLOT-BOUNDP working with conditions.
220 gerd 1.36 - (SETF SLOT-VALUE) working on read-only structure slots like
221     in other implementations.
222 gerd 1.38 - The declaration identifiers SLOTS, AUTO-COMPILE,
223     NOT-AUTO-COMPILE have been moved from PCL to EXT.
224 gerd 1.42 - Support for inlineing methods in effective methods; see the
225     CMU User Manual.
226 gerd 1.47 - Wrong results could be returned from generic functions when
227     all methods returned constant values, and some methods were
228     qualified, or the generic function didn't use the standard
229     method combination.
230 gerd 1.59 - For standard method combination and method combinations defined
231     with the short form of DEFINE-METHOD-COMBINATION: If there are
232     no applicable primary methods when a generic function is
233     called, the generic function PCL:NO-PRIMARY-METHOD is called.
234     The default method of this generic function signals a
235     continuable error of type PCL:NO-PRIMARY-METHOD-ERROR.
236 gerd 1.74 - Effective methods are no longer precomputed at method load
237 gerd 1.82 time, if the generic function has more than
238     PCL:*MAX-EMF-PRECOMPUTATION-METHODS* methods (default 100).
239     - The loading of methods with invalid qualifiers no longer
240     signals an error, for standard's conformance. Instead, a
241     warning is printed at method load time. An error is
242     signaled if the generic function is called with arguments such
243     that the method is used.
244 gerd 1.83 - Redefining a generic function with a different method
245     combination now recomputes effective methods.
246 gerd 1.1
247     * Improvements to Hemlock, the Emacs-like editor:
248    
249     * Changes to rebuilding procedure:
250    
251     * Deprecated features:
252 gerd 1.39 - EXT:ENCAPSULATE and associated functions; use fwrappers instead.
253 gerd 1.1
254     This release is not binary compatible with code compiled using CMUCL
255     18e; you will need to recompile FASL files.
256    
257     See <URL:http://www.cons.org/cmucl/> for download information,
258     guidelines on reporting bugs, and mailing list details.
259    
260    
261     We hope you enjoy using this release of CMUCL!
262    

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