/[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 1.63 - CMUCL no longer entering an infinite loop when dumping
63     circular constant lists to fasl files.
64 gerd 1.68 - COMPILE-FILE-PATHNAME's BYTE-COMPILE keyword arg defaulting
65     to *BYTE-COMPILE-DEFAULT* like COMPILE-FILE.
66 gerd 1.1
67     * Numerous ANSI compliance fixes:
68 gerd 1.5 - Many bugs in CMUCL's type system detected by Paul Dietz'
69     ANSI test suite have been fixed.
70     - Non-keyword keyword names in lambda lists are now accepted.
71 gerd 1.6 - Condition slot initialization fixed for the case that two
72     or more slots have the same :INITARG.
73 gerd 1.7 - Initforms are now evaluated once only during condition slot
74     initialization.
75     - USE-VALUE, STORE-VALUE, CONTINUE behavior corrected in presence
76     of multiple restarts having the same name.
77     - RESTART-CASE's interaction with local macros fixed.
78     - Interaction of COMPUTE-RESTARTS and RESTART-CASE fixed in
79     presence of multiple restarts having the same name.
80 gerd 1.8 - Condition slot readers/writers are generic functions.
81 gerd 1.9 - &WHOLE, &REST, &BODY in macro lambda lists can be followed
82     by destructuring patterns. The previous behavior of &BODY
83     when followed by (<body> <declarations> <doc>) is available
84     through the new lambda-list keyword EXT:&PARSE-BODY.
85 gerd 1.10 - ELT now signals an error in safe code when used on lists
86     with an out-of-bounds index.
87     - Accessing arrays in compiled code with out-of-bounds indices
88     now signals a TYPE-ERROR.
89 gerd 1.11 - DECLARE no longer being a special operator.
90 gerd 1.16 - DEFINE-CONDITION accepts slot option :DOCUMENTATION.
91 gerd 1.18 - Behavior of (... &KEY &ALLOW-OTHER-KEYS) fixed for
92     DESTRUCTURING-BIND and macros.
93 gerd 1.19 - Stricter checking of keyword argument list in CLOS methods.
94 gerd 1.20 - &ENVIRONMENT variable bound bound before other vars, regardless
95     of where it appears in a lambda-list.
96 gerd 1.22 - VALUES types no longer accepting &KEY or &ALLOW-OTHER-KEYS.
97     - THE conforming to ANSI.
98 gerd 1.24 - SLOT-EXISTS-P can be used with conditions.
99 gerd 1.32 - REMOVE-METHOD always returning the generic function passed to it.
100     - Standard methods for STANDARD-OBJECT and STRUCTURE-OBJECT
101     defined on MAKE-LOAD-FORM.
102     - Compliant MAKE-LOAD-FORM-SAVING-SLOTS.
103 gerd 1.37 - DEFSTRUCT recording slot-names as specified by users.
104 gerd 1.40 - Generic function call keyword argument checking according to
105     ANSI 7.6.5.
106 gerd 1.45 - CALL-NEXT-METHOD without arguments being called with original
107     arguments when method parameters are changed with SETQ.
108     - When CALL-NEXT-METHOD is called with arguments, an error is
109     signaled in safe code when the set of methods applicable to
110     CALL-NEXT-METHOD's arguments is different from the set of
111     methods applicable to the original method arguments.
112 gerd 1.46 - FIND-METHOD signaling an error when called with specializers
113     not corresponding to the number of required arguments of the
114     supplied generic function.
115 gerd 1.48 - TYPE-OF returning KEYWORD for keywords, STANDARD-CHAR for
116     standard characters, BOOLEAN for T, (INTEGER <N> <N>) for
117     integers N, non-list types for functions, and CLOS classes for
118     instances whose class doesn't have a proper name.
119 gerd 1.49 - Class precedence list of NULL not having SYMBOL before LIST,
120     precedence list of STANDARD-METHOD not having METHOD before
121     STANDARD-OBJECT.
122 gerd 1.55 - ADD-METHOD returning its first argument, the generic function.
123 gerd 1.54 - DEFCLASS redefining a class with the given name only if the
124     name is the proper name of an existing class.
125 gerd 1.57 - KEYWORD package no longer having nickname "".
126 gerd 1.60 - COMMON-LISP-USER package no longer having nickname USER.
127     - COMMON-LISP package no longer having nickname LISP; LISP
128     and COMMON-LISP are now separate packages.
129 gerd 1.58 - SLOT-VALUE, (SETF SLOT-VALUE), SLOT-BOUNDP, SLOT-MAKUNBOUND
130     returning values specified by the standard when SLOT-UNBOUND
131     or SLOT-MISSING are called and return.
132 gerd 1.65 - NTH and NTHCDR accepting bignums as first argument.
133 gerd 1.66 - First arg of CERROR may be a function.
134 gerd 1.67 - Lambda-lists of the form (X . Y) in DESTRUCTURING-BIND and macros
135     are now equivalent to (X &REST Y).
136 gerd 1.69 - LAST, BUTLAST, NBUTLAST accepting bignum counts.
137 gerd 1.1
138     * Numerous bugfixes:
139 gerd 1.12 - NSET-EXCLUSIVE-OR returns the same results as SET-EXCLUSIVE-OR
140     wrt to duplicate elements.
141 gerd 1.11 - Forms like (MULTIPLE-VALUE-BIND 'LIST) no longer trapping
142     an internal compiler error when compiled.
143 gerd 1.16 - PARSE-INTEGER signaling PARSE-ERROR.
144     - Compiler eliminating some type checks in safe code.
145 gerd 1.41 - Byte-compiler and -interpreter not handling C:&MORE.
146     - Some TYPE-ERRORs being signaled with unbound slots, which
147     made them undisplayable.
148 gerd 1.62 - Structure predicates no longer signaling an error when applied
149     to obsolete instances.
150 gerd 1.64 - A DEFTRANSFORM for array bounds checking had an off-by-1 error.
151 gerd 1.1
152     * Other changes:
153 emarsden 1.21 - Removed obsolete alias from MAKE-VECTOR to MAKE-ARRAY
154 emarsden 1.44 - the signature of *COMPILER-NOTIFICATION-FUNCTION* has changed;
155     it now has an extra argument that describes the nature of the
156     error or warning.
157 toy 1.56 - File versioning occurs when the version component is :newest,
158     and Emacs style file versions are created: foo.bar.~N~, where
159     the larger N is newer. foo.bar is the newest version.
160     - Converting namestrings to pathnames now get a version component
161     of NIL instead of :NEWEST.
162     - *default-pathname-defaults* has a version component of
163     :unspecific instead of :newest so versioning is disabled by
164     default to preserve current behavior. Set the version to
165     :newest to create versions.
166 gerd 1.1
167     * Numerous improvements to the PCL implementation of CLOS:
168     - Gerd's PCL has been added, which fixes numerous bugs and ANSI/
169     AMOP non-compliances, and adds various new optimizations (also
170     see the CMU User Manual).
171 gerd 1.2 - PCL's class hierarchy has been changed to conform to AMOP, for
172     instance, GENERIC-FUNCTION is now a subclass of
173     STANDARD-OBJECT.
174 gerd 1.4 - ENSURE-CLASS-USING-CLASS's argument list has been changed
175     to conform to AMOP.
176 gerd 1.5 - COMPUTE-EFFECTIVE-SLOT-DEFINITION now takes a slot name as
177     argument, for AMOP compliance.
178 gerd 1.9 - SUBTYPEP works in presence of forward-referenced classes.
179 gerd 1.13 - Accessing slots of specialized parameters in (SETF
180     SLOT-VALUE-USING-CLASS) methods works.
181 gerd 1.14 - DIRECT-SLOT-DEFINITION-CLASS and EFFECTIVE-SLOT-DEFINITION-CLASS
182     AMOP compliant.
183 gerd 1.15 - ALLOCATE-INSTANCE working with structures defined with DEFSTRUCT.
184 gerd 1.23 - With (DEFGENERIC FOO (&REST X &KEY)) (DEFMETHOD FOO (&REST X) X),
185     (FOO 1) now signals an error.
186 gerd 1.33 - Methods with &OPTIONAL arguments detecting too many args.
187 gerd 1.35 - DEFMETHOD and DEFGENERIC detecting doubled lambda variables.
188 gerd 1.34 - DEFGENERIC :ARGUMENT-PRECEDENCE-ORDER option checking.
189     - SLOT-VALUE, (SETF SLOT-VALUE), SLOT-BOUNDP working with conditions.
190 gerd 1.36 - (SETF SLOT-VALUE) working on read-only structure slots like
191     in other implementations.
192 gerd 1.38 - The declaration identifiers SLOTS, AUTO-COMPILE,
193     NOT-AUTO-COMPILE have been moved from PCL to EXT.
194 gerd 1.42 - Support for inlineing methods in effective methods; see the
195     CMU User Manual.
196 gerd 1.47 - Wrong results could be returned from generic functions when
197     all methods returned constant values, and some methods were
198     qualified, or the generic function didn't use the standard
199     method combination.
200 gerd 1.59 - For standard method combination and method combinations defined
201     with the short form of DEFINE-METHOD-COMBINATION: If there are
202     no applicable primary methods when a generic function is
203     called, the generic function PCL:NO-PRIMARY-METHOD is called.
204     The default method of this generic function signals a
205     continuable error of type PCL:NO-PRIMARY-METHOD-ERROR.
206 gerd 1.70 - Effective methods are not precomputed at method load time if
207     the generic function has >= PCL::*MAX-EMF-PRECOMPUTATION-METHODS*
208     methods (default value 100). This prevents a O(n^3) behavior.
209 gerd 1.1
210     * Improvements to Hemlock, the Emacs-like editor:
211    
212     * Changes to rebuilding procedure:
213    
214     * Deprecated features:
215 gerd 1.39 - EXT:ENCAPSULATE and associated functions; use fwrappers instead.
216 gerd 1.1
217     This release is not binary compatible with code compiled using CMUCL
218     18e; you will need to recompile FASL files.
219    
220     See <URL:http://www.cons.org/cmucl/> for download information,
221     guidelines on reporting bugs, and mailing list details.
222    
223    
224     We hope you enjoy using this release of CMUCL!
225    

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