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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 gerd 1.88 - Byte-compiled code being executed ca. 1/3 faster.
74 toy 1.81
75 gerd 1.1 * Numerous ANSI compliance fixes:
76 gerd 1.5 - Many bugs in CMUCL's type system detected by Paul Dietz'
77     ANSI test suite have been fixed.
78     - Non-keyword keyword names in lambda lists are now accepted.
79 gerd 1.6 - Condition slot initialization fixed for the case that two
80     or more slots have the same :INITARG.
81 gerd 1.7 - Initforms are now evaluated once only during condition slot
82     initialization.
83     - USE-VALUE, STORE-VALUE, CONTINUE behavior corrected in presence
84     of multiple restarts having the same name.
85     - RESTART-CASE's interaction with local macros fixed.
86     - Interaction of COMPUTE-RESTARTS and RESTART-CASE fixed in
87     presence of multiple restarts having the same name.
88 gerd 1.8 - Condition slot readers/writers are generic functions.
89 gerd 1.9 - &WHOLE, &REST, &BODY in macro lambda lists can be followed
90     by destructuring patterns. The previous behavior of &BODY
91     when followed by (<body> <declarations> <doc>) is available
92     through the new lambda-list keyword EXT:&PARSE-BODY.
93 gerd 1.10 - ELT now signals an error in safe code when used on lists
94     with an out-of-bounds index.
95     - Accessing arrays in compiled code with out-of-bounds indices
96     now signals a TYPE-ERROR.
97 gerd 1.11 - DECLARE no longer being a special operator.
98 gerd 1.16 - DEFINE-CONDITION accepts slot option :DOCUMENTATION.
99 gerd 1.18 - Behavior of (... &KEY &ALLOW-OTHER-KEYS) fixed for
100     DESTRUCTURING-BIND and macros.
101 gerd 1.19 - Stricter checking of keyword argument list in CLOS methods.
102 gerd 1.20 - &ENVIRONMENT variable bound bound before other vars, regardless
103     of where it appears in a lambda-list.
104 gerd 1.22 - VALUES types no longer accepting &KEY or &ALLOW-OTHER-KEYS.
105     - THE conforming to ANSI.
106 gerd 1.24 - SLOT-EXISTS-P can be used with conditions.
107 gerd 1.32 - REMOVE-METHOD always returning the generic function passed to it.
108     - Standard methods for STANDARD-OBJECT and STRUCTURE-OBJECT
109     defined on MAKE-LOAD-FORM.
110     - Compliant MAKE-LOAD-FORM-SAVING-SLOTS.
111 gerd 1.37 - DEFSTRUCT recording slot-names as specified by users.
112 gerd 1.40 - Generic function call keyword argument checking according to
113     ANSI 7.6.5.
114 gerd 1.45 - CALL-NEXT-METHOD without arguments being called with original
115     arguments when method parameters are changed with SETQ.
116     - When CALL-NEXT-METHOD is called with arguments, an error is
117     signaled in safe code when the set of methods applicable to
118     CALL-NEXT-METHOD's arguments is different from the set of
119     methods applicable to the original method arguments.
120 gerd 1.46 - FIND-METHOD signaling an error when called with specializers
121     not corresponding to the number of required arguments of the
122     supplied generic function.
123 gerd 1.48 - TYPE-OF returning KEYWORD for keywords, STANDARD-CHAR for
124     standard characters, BOOLEAN for T, (INTEGER <N> <N>) for
125     integers N, non-list types for functions, and CLOS classes for
126     instances whose class doesn't have a proper name.
127 gerd 1.49 - Class precedence list of NULL not having SYMBOL before LIST,
128     precedence list of STANDARD-METHOD not having METHOD before
129     STANDARD-OBJECT.
130 gerd 1.55 - ADD-METHOD returning its first argument, the generic function.
131 gerd 1.54 - DEFCLASS redefining a class with the given name only if the
132     name is the proper name of an existing class.
133 gerd 1.57 - KEYWORD package no longer having nickname "".
134 gerd 1.60 - COMMON-LISP-USER package no longer having nickname USER.
135     - COMMON-LISP package no longer having nickname LISP; LISP
136     and COMMON-LISP are now separate packages.
137 gerd 1.58 - SLOT-VALUE, (SETF SLOT-VALUE), SLOT-BOUNDP, SLOT-MAKUNBOUND
138     returning values specified by the standard when SLOT-UNBOUND
139     or SLOT-MISSING are called and return.
140 gerd 1.65 - NTH and NTHCDR accepting bignums as first argument.
141 gerd 1.66 - First arg of CERROR may be a function.
142 gerd 1.67 - Lambda-lists of the form (X . Y) in DESTRUCTURING-BIND and macros
143     are now equivalent to (X &REST Y).
144 gerd 1.69 - LAST, BUTLAST, NBUTLAST accepting bignum counts.
145 gerd 1.71 - WITH-OUTPUT-TO-STRING accepting :ELEMENT-TYPE.
146 gerd 1.75 - FIXNUM no longer naming a function.
147 toy 1.78 - MAKE-STRING-OUTPUT-STREAM accepts :ELEMENT-TYPE.
148 gerd 1.1
149     * Numerous bugfixes:
150 gerd 1.12 - NSET-EXCLUSIVE-OR returns the same results as SET-EXCLUSIVE-OR
151     wrt to duplicate elements.
152 gerd 1.11 - Forms like (MULTIPLE-VALUE-BIND 'LIST) no longer trapping
153     an internal compiler error when compiled.
154 gerd 1.16 - PARSE-INTEGER signaling PARSE-ERROR.
155     - Compiler eliminating some type checks in safe code.
156 gerd 1.41 - Byte-compiler and -interpreter not handling C:&MORE.
157     - Some TYPE-ERRORs being signaled with unbound slots, which
158     made them undisplayable.
159 gerd 1.62 - Structure predicates no longer signaling an error when applied
160     to obsolete instances.
161 gerd 1.64 - A DEFTRANSFORM for array bounds checking had an off-by-1 error.
162 toy 1.78 - Compiler was not properly deriving the type of FTRUNCATE in all
163     cases.
164     - Fixed error wherein certain uses of 2 arg ATAN caused a
165     compiler error on x86.
166 gerd 1.84 - Compiler wrongly signaling a type error in VOLATILE-INFO-LOOKUP or
167     COMPACT-INFO-LOOKUP for hash values equal to MOST-POSITIVE-FIXNUM.
168 gerd 1.85 - FFLOOR and FCEILING return types sometimes being inferred as
169     being the nil type.
170 gerd 1.1
171     * Other changes:
172 emarsden 1.72 - CREATE-REQUEST-SERVER has an additional :reuse-address keyword
173     argument.
174 emarsden 1.21 - Removed obsolete alias from MAKE-VECTOR to MAKE-ARRAY
175 emarsden 1.44 - the signature of *COMPILER-NOTIFICATION-FUNCTION* has changed;
176     it now has an extra argument that describes the nature of the
177     error or warning.
178 toy 1.78 - File versioning occurs when the version component is :NEWEST,
179 toy 1.56 and Emacs style file versions are created: foo.bar.~N~, where
180     the larger N is newer. foo.bar is the newest version.
181     - Converting namestrings to pathnames now get a version component
182     of NIL instead of :NEWEST.
183 toy 1.78 - *DEFAULT-PATHNAME-DEFAULTS* has a version component of
184     :UNSPECIFIC instead of :NEWEST so versioning is disabled by
185 toy 1.56 default to preserve current behavior. Set the version to
186 toy 1.78 :NEWEST to create versions.
187 gerd 1.73 - LDB backtrace on x86.
188 gerd 1.82 - DYNAMIC-EXTENT support on x86 and sparc. Stack-allocation can
189     be controlled by the setting of
190     EXT:*TRUST-DYNAMIC-EXTENT-DECLARATIONS*. See also the CMU User
191     Manual. Be warned that all bets are off if a stack-allocated
192     object or parts of it escape; CMUCL might crash or format your
193     hard disk.
194     - Generational GC (gencgc) available for Sparc/Solaris on an
195 toy 1.81 experimental basis. Despite the name and feature, it is not
196     conservative.
197 gerd 1.1
198     * Numerous improvements to the PCL implementation of CLOS:
199     - Gerd's PCL has been added, which fixes numerous bugs and ANSI/
200     AMOP non-compliances, and adds various new optimizations (also
201     see the CMU User Manual).
202 gerd 1.2 - PCL's class hierarchy has been changed to conform to AMOP, for
203     instance, GENERIC-FUNCTION is now a subclass of
204     STANDARD-OBJECT.
205 gerd 1.4 - ENSURE-CLASS-USING-CLASS's argument list has been changed
206     to conform to AMOP.
207 gerd 1.5 - COMPUTE-EFFECTIVE-SLOT-DEFINITION now takes a slot name as
208     argument, for AMOP compliance.
209 gerd 1.9 - SUBTYPEP works in presence of forward-referenced classes.
210 gerd 1.13 - Accessing slots of specialized parameters in (SETF
211     SLOT-VALUE-USING-CLASS) methods works.
212 gerd 1.14 - DIRECT-SLOT-DEFINITION-CLASS and EFFECTIVE-SLOT-DEFINITION-CLASS
213     AMOP compliant.
214 gerd 1.15 - ALLOCATE-INSTANCE working with structures defined with DEFSTRUCT.
215 gerd 1.23 - With (DEFGENERIC FOO (&REST X &KEY)) (DEFMETHOD FOO (&REST X) X),
216     (FOO 1) now signals an error.
217 gerd 1.33 - Methods with &OPTIONAL arguments detecting too many args.
218 gerd 1.35 - DEFMETHOD and DEFGENERIC detecting doubled lambda variables.
219 gerd 1.34 - DEFGENERIC :ARGUMENT-PRECEDENCE-ORDER option checking.
220     - SLOT-VALUE, (SETF SLOT-VALUE), SLOT-BOUNDP working with conditions.
221 gerd 1.36 - (SETF SLOT-VALUE) working on read-only structure slots like
222     in other implementations.
223 gerd 1.38 - The declaration identifiers SLOTS, AUTO-COMPILE,
224     NOT-AUTO-COMPILE have been moved from PCL to EXT.
225 gerd 1.42 - Support for inlineing methods in effective methods; see the
226     CMU User Manual.
227 gerd 1.47 - Wrong results could be returned from generic functions when
228     all methods returned constant values, and some methods were
229     qualified, or the generic function didn't use the standard
230     method combination.
231 gerd 1.59 - For standard method combination and method combinations defined
232     with the short form of DEFINE-METHOD-COMBINATION: If there are
233     no applicable primary methods when a generic function is
234     called, the generic function PCL:NO-PRIMARY-METHOD is called.
235     The default method of this generic function signals a
236     continuable error of type PCL:NO-PRIMARY-METHOD-ERROR.
237 gerd 1.74 - Effective methods are no longer precomputed at method load
238 gerd 1.82 time, if the generic function has more than
239     PCL:*MAX-EMF-PRECOMPUTATION-METHODS* methods (default 100).
240     - The loading of methods with invalid qualifiers no longer
241     signals an error, for standard's conformance. Instead, a
242     warning is printed at method load time. An error is
243     signaled if the generic function is called with arguments such
244     that the method is used.
245 gerd 1.83 - Redefining a generic function with a different method
246     combination now recomputes effective methods.
247 gerd 1.1
248     * Improvements to Hemlock, the Emacs-like editor:
249    
250     * Changes to rebuilding procedure:
251    
252     * Deprecated features:
253 gerd 1.39 - EXT:ENCAPSULATE and associated functions; use fwrappers instead.
254 gerd 1.1
255     This release is not binary compatible with code compiled using CMUCL
256     18e; you will need to recompile FASL files.
257    
258     See <URL:http://www.cons.org/cmucl/> for download information,
259     guidelines on reporting bugs, and mailing list details.
260    
261    
262     We hope you enjoy using this release of CMUCL!
263    

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