/[cmucl]/src/general-info/release-19a.txt
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1 gerd 1.1 ========================== C M U C L 18 e =============================
2    
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 1.17 - Compiler checking control string and number of args to FORMAT.
40 gerd 1.27 - TRACE automatically using encapsulation when function-end
41     breakpoints cannot be used.
42 gerd 1.28 - INSPECT working on CLOS instances.
43 toy 1.50 - Callbacks from foreign code to Lisp. Implemented for x86 and
44     sparc.
45 gerd 1.31 - Functions like GETHASH that are used in the implementation of
46     TRACE can now be traced. See also
47     DEBUG:*TRACE-ENCAPSULATE-PACKAGE-NAMES*.
48 gerd 1.39 - New facility for encapsulating functions, FWRAPPERS;
49     see also the CMUCL User Manual.
50     - TRACE and PROFILE have been reimplemented using fwrappers,
51     with the effect of tracing and profiling now working more
52     nicely together.
53     - When a profiled function is redefined, it is re-profiled.
54 toy 1.50 - A basic implementation of simple-streams added. Some
55     functionality may be missing.
56 gerd 1.51 - UNIX:UNIX-LSEEK working with files > 2G on BSDs.
57 gerd 1.52 - Type declarations on local bindings of special variables no
58     longer being ignored.
59 gerd 1.61 - DISASSEMBLE disassembling closure/funcallable instance
60     functions.
61     - (SETF EXT:WEAK-POINTER-VALUE) has been added.
62 gerd 1.1
63     * Numerous ANSI compliance fixes:
64 gerd 1.5 - Many bugs in CMUCL's type system detected by Paul Dietz'
65     ANSI test suite have been fixed.
66     - Non-keyword keyword names in lambda lists are now accepted.
67 gerd 1.6 - Condition slot initialization fixed for the case that two
68     or more slots have the same :INITARG.
69 gerd 1.7 - Initforms are now evaluated once only during condition slot
70     initialization.
71     - USE-VALUE, STORE-VALUE, CONTINUE behavior corrected in presence
72     of multiple restarts having the same name.
73     - RESTART-CASE's interaction with local macros fixed.
74     - Interaction of COMPUTE-RESTARTS and RESTART-CASE fixed in
75     presence of multiple restarts having the same name.
76 gerd 1.8 - Condition slot readers/writers are generic functions.
77 gerd 1.9 - &WHOLE, &REST, &BODY in macro lambda lists can be followed
78     by destructuring patterns. The previous behavior of &BODY
79     when followed by (<body> <declarations> <doc>) is available
80     through the new lambda-list keyword EXT:&PARSE-BODY.
81 gerd 1.10 - ELT now signals an error in safe code when used on lists
82     with an out-of-bounds index.
83     - Accessing arrays in compiled code with out-of-bounds indices
84     now signals a TYPE-ERROR.
85 gerd 1.11 - DECLARE no longer being a special operator.
86 gerd 1.16 - DEFINE-CONDITION accepts slot option :DOCUMENTATION.
87 gerd 1.18 - Behavior of (... &KEY &ALLOW-OTHER-KEYS) fixed for
88     DESTRUCTURING-BIND and macros.
89 gerd 1.19 - Stricter checking of keyword argument list in CLOS methods.
90 gerd 1.20 - &ENVIRONMENT variable bound bound before other vars, regardless
91     of where it appears in a lambda-list.
92 gerd 1.22 - VALUES types no longer accepting &KEY or &ALLOW-OTHER-KEYS.
93     - THE conforming to ANSI.
94 gerd 1.24 - SLOT-EXISTS-P can be used with conditions.
95 gerd 1.32 - REMOVE-METHOD always returning the generic function passed to it.
96     - Standard methods for STANDARD-OBJECT and STRUCTURE-OBJECT
97     defined on MAKE-LOAD-FORM.
98     - Compliant MAKE-LOAD-FORM-SAVING-SLOTS.
99 gerd 1.37 - DEFSTRUCT recording slot-names as specified by users.
100 gerd 1.40 - Generic function call keyword argument checking according to
101     ANSI 7.6.5.
102 gerd 1.45 - CALL-NEXT-METHOD without arguments being called with original
103     arguments when method parameters are changed with SETQ.
104     - When CALL-NEXT-METHOD is called with arguments, an error is
105     signaled in safe code when the set of methods applicable to
106     CALL-NEXT-METHOD's arguments is different from the set of
107     methods applicable to the original method arguments.
108 gerd 1.46 - FIND-METHOD signaling an error when called with specializers
109     not corresponding to the number of required arguments of the
110     supplied generic function.
111 gerd 1.48 - TYPE-OF returning KEYWORD for keywords, STANDARD-CHAR for
112     standard characters, BOOLEAN for T, (INTEGER <N> <N>) for
113     integers N, non-list types for functions, and CLOS classes for
114     instances whose class doesn't have a proper name.
115 gerd 1.49 - Class precedence list of NULL not having SYMBOL before LIST,
116     precedence list of STANDARD-METHOD not having METHOD before
117     STANDARD-OBJECT.
118 gerd 1.55 - ADD-METHOD returning its first argument, the generic function.
119 gerd 1.54 - DEFCLASS redefining a class with the given name only if the
120     name is the proper name of an existing class.
121 gerd 1.57 - KEYWORD package no longer having nickname "".
122 gerd 1.60 - COMMON-LISP-USER package no longer having nickname USER.
123     - COMMON-LISP package no longer having nickname LISP; LISP
124     and COMMON-LISP are now separate packages.
125 gerd 1.58 - SLOT-VALUE, (SETF SLOT-VALUE), SLOT-BOUNDP, SLOT-MAKUNBOUND
126     returning values specified by the standard when SLOT-UNBOUND
127     or SLOT-MISSING are called and return.
128 gerd 1.1
129     * Numerous bugfixes:
130 gerd 1.12 - NSET-EXCLUSIVE-OR returns the same results as SET-EXCLUSIVE-OR
131     wrt to duplicate elements.
132 gerd 1.11 - Forms like (MULTIPLE-VALUE-BIND 'LIST) no longer trapping
133     an internal compiler error when compiled.
134 gerd 1.16 - PARSE-INTEGER signaling PARSE-ERROR.
135     - Compiler eliminating some type checks in safe code.
136 gerd 1.41 - Byte-compiler and -interpreter not handling C:&MORE.
137     - Some TYPE-ERRORs being signaled with unbound slots, which
138     made them undisplayable.
139 gerd 1.62 - Structure predicates no longer signaling an error when applied
140     to obsolete instances.
141 gerd 1.1
142     * Other changes:
143 emarsden 1.21 - Removed obsolete alias from MAKE-VECTOR to MAKE-ARRAY
144 emarsden 1.44 - the signature of *COMPILER-NOTIFICATION-FUNCTION* has changed;
145     it now has an extra argument that describes the nature of the
146     error or warning.
147 toy 1.56 - File versioning occurs when the version component is :newest,
148     and Emacs style file versions are created: foo.bar.~N~, where
149     the larger N is newer. foo.bar is the newest version.
150     - Converting namestrings to pathnames now get a version component
151     of NIL instead of :NEWEST.
152     - *default-pathname-defaults* has a version component of
153     :unspecific instead of :newest so versioning is disabled by
154     default to preserve current behavior. Set the version to
155     :newest to create versions.
156 gerd 1.1
157     * Numerous improvements to the PCL implementation of CLOS:
158     - Gerd's PCL has been added, which fixes numerous bugs and ANSI/
159     AMOP non-compliances, and adds various new optimizations (also
160     see the CMU User Manual).
161 gerd 1.2 - PCL's class hierarchy has been changed to conform to AMOP, for
162     instance, GENERIC-FUNCTION is now a subclass of
163     STANDARD-OBJECT.
164 gerd 1.4 - ENSURE-CLASS-USING-CLASS's argument list has been changed
165     to conform to AMOP.
166 gerd 1.5 - COMPUTE-EFFECTIVE-SLOT-DEFINITION now takes a slot name as
167     argument, for AMOP compliance.
168 gerd 1.9 - SUBTYPEP works in presence of forward-referenced classes.
169 gerd 1.13 - Accessing slots of specialized parameters in (SETF
170     SLOT-VALUE-USING-CLASS) methods works.
171 gerd 1.14 - DIRECT-SLOT-DEFINITION-CLASS and EFFECTIVE-SLOT-DEFINITION-CLASS
172     AMOP compliant.
173 gerd 1.15 - ALLOCATE-INSTANCE working with structures defined with DEFSTRUCT.
174 gerd 1.23 - With (DEFGENERIC FOO (&REST X &KEY)) (DEFMETHOD FOO (&REST X) X),
175     (FOO 1) now signals an error.
176 gerd 1.33 - Methods with &OPTIONAL arguments detecting too many args.
177 gerd 1.35 - DEFMETHOD and DEFGENERIC detecting doubled lambda variables.
178 gerd 1.34 - DEFGENERIC :ARGUMENT-PRECEDENCE-ORDER option checking.
179     - SLOT-VALUE, (SETF SLOT-VALUE), SLOT-BOUNDP working with conditions.
180 gerd 1.36 - (SETF SLOT-VALUE) working on read-only structure slots like
181     in other implementations.
182 gerd 1.38 - The declaration identifiers SLOTS, AUTO-COMPILE,
183     NOT-AUTO-COMPILE have been moved from PCL to EXT.
184 gerd 1.42 - Support for inlineing methods in effective methods; see the
185     CMU User Manual.
186 gerd 1.47 - Wrong results could be returned from generic functions when
187     all methods returned constant values, and some methods were
188     qualified, or the generic function didn't use the standard
189     method combination.
190 gerd 1.59 - For standard method combination and method combinations defined
191     with the short form of DEFINE-METHOD-COMBINATION: If there are
192     no applicable primary methods when a generic function is
193     called, the generic function PCL:NO-PRIMARY-METHOD is called.
194     The default method of this generic function signals a
195     continuable error of type PCL:NO-PRIMARY-METHOD-ERROR.
196 gerd 1.1
197     * Improvements to Hemlock, the Emacs-like editor:
198    
199     * Changes to rebuilding procedure:
200    
201     * Deprecated features:
202 gerd 1.39 - EXT:ENCAPSULATE and associated functions; use fwrappers instead.
203 gerd 1.1
204     This release is not binary compatible with code compiled using CMUCL
205     18e; you will need to recompile FASL files.
206    
207     See <URL:http://www.cons.org/cmucl/> for download information,
208     guidelines on reporting bugs, and mailing list details.
209    
210    
211     We hope you enjoy using this release of CMUCL!
212    

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