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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 1.89 - Numerous LOOP fixes.
149 gerd 1.92 - On FreeBSD, CLtS-required floating-point conditions are signaled.
150 gerd 1.98 - PARSE-INTEGER skipping over whitespace after a number.
151 gerd 1.1
152     * Numerous bugfixes:
153 gerd 1.12 - NSET-EXCLUSIVE-OR returns the same results as SET-EXCLUSIVE-OR
154     wrt to duplicate elements.
155 gerd 1.11 - Forms like (MULTIPLE-VALUE-BIND 'LIST) no longer trapping
156     an internal compiler error when compiled.
157 gerd 1.16 - PARSE-INTEGER signaling PARSE-ERROR.
158     - Compiler eliminating some type checks in safe code.
159 gerd 1.41 - Byte-compiler and -interpreter not handling C:&MORE.
160     - Some TYPE-ERRORs being signaled with unbound slots, which
161     made them undisplayable.
162 gerd 1.62 - Structure predicates no longer signaling an error when applied
163     to obsolete instances.
164 gerd 1.64 - A DEFTRANSFORM for array bounds checking had an off-by-1 error.
165 toy 1.78 - Compiler was not properly deriving the type of FTRUNCATE in all
166     cases.
167     - Fixed error wherein certain uses of 2 arg ATAN caused a
168     compiler error on x86.
169 gerd 1.84 - Compiler wrongly signaling a type error in VOLATILE-INFO-LOOKUP or
170     COMPACT-INFO-LOOKUP for hash values equal to MOST-POSITIVE-FIXNUM.
171 gerd 1.85 - FFLOOR and FCEILING return types sometimes being inferred as
172     being the nil type.
173 gerd 1.90 - PARSE-TIME accepting GMT offsets with a leading plus sign.
174 gerd 1.91 - UNIX-MMAP not accepting a null fd, preventing anonymous
175     mappings.
176     - SIGPROF having the wrong value on GNU/Linux.
177 gerd 1.93 - Wrong byte-code being generated for (APPLY #'+ <X> <Y>) and
178     similar cases.
179 gerd 1.95 - GCD sometimes returning a negative value.
180 gerd 1.96 - LCM sometimes returning a negative value, or signaling division-by-zero.
181 gerd 1.97 - FLOAT in sometimes returning a float of the wrong type.
182 toy 1.101 - ROOM should handle the large heaps now without overflowing
183     internal counters or signaling type errors. Columns should
184     line up better too.
185 gerd 1.1
186     * Other changes:
187 emarsden 1.72 - CREATE-REQUEST-SERVER has an additional :reuse-address keyword
188     argument.
189 emarsden 1.21 - Removed obsolete alias from MAKE-VECTOR to MAKE-ARRAY
190 emarsden 1.44 - the signature of *COMPILER-NOTIFICATION-FUNCTION* has changed;
191     it now has an extra argument that describes the nature of the
192     error or warning.
193 toy 1.78 - File versioning occurs when the version component is :NEWEST,
194 toy 1.56 and Emacs style file versions are created: foo.bar.~N~, where
195     the larger N is newer. foo.bar is the newest version.
196     - Converting namestrings to pathnames now get a version component
197     of NIL instead of :NEWEST.
198 toy 1.78 - *DEFAULT-PATHNAME-DEFAULTS* has a version component of
199     :UNSPECIFIC instead of :NEWEST so versioning is disabled by
200 toy 1.56 default to preserve current behavior. Set the version to
201 toy 1.78 :NEWEST to create versions.
202 gerd 1.73 - LDB backtrace on x86.
203 gerd 1.82 - DYNAMIC-EXTENT support on x86 and sparc. Stack-allocation can
204     be controlled by the setting of
205     EXT:*TRUST-DYNAMIC-EXTENT-DECLARATIONS*. See also the CMU User
206     Manual. Be warned that all bets are off if a stack-allocated
207     object or parts of it escape; CMUCL might crash or format your
208     hard disk.
209     - Generational GC (gencgc) available for Sparc/Solaris on an
210 toy 1.81 experimental basis. Despite the name and feature, it is not
211     conservative.
212 toy 1.94 - Search in /usr/lib/cmucl for the lisp core file as well, to
213     support x86/Linux
214 toy 1.99 - The trap for floating-point underflow is turned off by default
215     for all platforms now.
216 gerd 1.1
217     * Numerous improvements to the PCL implementation of CLOS:
218     - Gerd's PCL has been added, which fixes numerous bugs and ANSI/
219     AMOP non-compliances, and adds various new optimizations (also
220     see the CMU User Manual).
221 gerd 1.2 - PCL's class hierarchy has been changed to conform to AMOP, for
222     instance, GENERIC-FUNCTION is now a subclass of
223     STANDARD-OBJECT.
224 gerd 1.4 - ENSURE-CLASS-USING-CLASS's argument list has been changed
225     to conform to AMOP.
226 gerd 1.5 - COMPUTE-EFFECTIVE-SLOT-DEFINITION now takes a slot name as
227     argument, for AMOP compliance.
228 gerd 1.9 - SUBTYPEP works in presence of forward-referenced classes.
229 gerd 1.13 - Accessing slots of specialized parameters in (SETF
230     SLOT-VALUE-USING-CLASS) methods works.
231 gerd 1.14 - DIRECT-SLOT-DEFINITION-CLASS and EFFECTIVE-SLOT-DEFINITION-CLASS
232     AMOP compliant.
233 gerd 1.15 - ALLOCATE-INSTANCE working with structures defined with DEFSTRUCT.
234 gerd 1.23 - With (DEFGENERIC FOO (&REST X &KEY)) (DEFMETHOD FOO (&REST X) X),
235     (FOO 1) now signals an error.
236 gerd 1.33 - Methods with &OPTIONAL arguments detecting too many args.
237 gerd 1.35 - DEFMETHOD and DEFGENERIC detecting doubled lambda variables.
238 gerd 1.34 - DEFGENERIC :ARGUMENT-PRECEDENCE-ORDER option checking.
239     - SLOT-VALUE, (SETF SLOT-VALUE), SLOT-BOUNDP working with conditions.
240 gerd 1.36 - (SETF SLOT-VALUE) working on read-only structure slots like
241     in other implementations.
242 gerd 1.38 - The declaration identifiers SLOTS, AUTO-COMPILE,
243     NOT-AUTO-COMPILE have been moved from PCL to EXT.
244 gerd 1.42 - Support for inlineing methods in effective methods; see the
245     CMU User Manual.
246 gerd 1.47 - Wrong results could be returned from generic functions when
247     all methods returned constant values, and some methods were
248     qualified, or the generic function didn't use the standard
249     method combination.
250 gerd 1.59 - For standard method combination and method combinations defined
251     with the short form of DEFINE-METHOD-COMBINATION: If there are
252     no applicable primary methods when a generic function is
253     called, the generic function PCL:NO-PRIMARY-METHOD is called.
254     The default method of this generic function signals a
255     continuable error of type PCL:NO-PRIMARY-METHOD-ERROR.
256 gerd 1.74 - Effective methods are no longer precomputed at method load
257 gerd 1.82 time, if the generic function has more than
258     PCL:*MAX-EMF-PRECOMPUTATION-METHODS* methods (default 100).
259     - The loading of methods with invalid qualifiers no longer
260     signals an error, for standard's conformance. Instead, a
261     warning is printed at method load time. An error is
262     signaled if the generic function is called with arguments such
263     that the method is used.
264 gerd 1.83 - Redefining a generic function with a different method
265     combination now recomputes effective methods.
266 gerd 1.1
267     * Improvements to Hemlock, the Emacs-like editor:
268    
269     * Changes to rebuilding procedure:
270 toy 1.100 - When rebuilding CMUCL, *features* do not need to be set by
271     hand. As files are loaded, the appropriate *features* are set
272     so that the resulting build has the same set of *features*.
273     There should also be fewer warnings about internals.h changing,
274     since that now just contains things in sys:*runtime-features*.
275     Use sys:register-lisp-feature and
276     sys:register-lisp-runtime-feature to set *features* and
277     sys:*runtime-features*, respectively.
278 toy 1.102 - Pierre Mai's build-tools have been incorporated. The scripts
279     are in the src/tools directory. These are slightly modified
280     versions of his scripts. Should make building CMUCL easier.
281 gerd 1.1 * Deprecated features:
282 gerd 1.39 - EXT:ENCAPSULATE and associated functions; use fwrappers instead.
283 gerd 1.1
284     This release is not binary compatible with code compiled using CMUCL
285     18e; you will need to recompile FASL files.
286    
287     See <URL:http://www.cons.org/cmucl/> for download information,
288     guidelines on reporting bugs, and mailing list details.
289    
290    
291     We hope you enjoy using this release of CMUCL!
292    

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