/[cmucl]/src/general-info/release-19a.txt
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Revision 1.79 - (hide annotations)
Wed Aug 6 19:01:17 2003 UTC (10 years, 8 months ago) by gerd
Branch: MAIN
CVS Tags: dynamic-extent-base, sparc_gencgc
Branch point for: sparc_gencgc_branch, dynamic-extent
Changes since 1.78: +6 -5 lines
File MIME type: text/plain
	Dynamic-extent closures for x86.  Use boot15.lisp for
	bootstrapping.

	(defun prn (fn)
	  (print (funcall fn)))

	(defun foo (x)
	  (flet ((bar () x))
	    (declare (dynamic-extent #'bar))
	    (prn #'bar)))

	=> The closure for BAR is allocated from the stack

	* src/compiler/node.lisp (lexenv): Add slot dynamic-extent.

	* src/compiler/ir1util.lisp (make-lexenv): Add keyword
	arg for dynamic-extent.

	* src/code/defstruct.lisp (%redefine-defstruct)
	[#+bootstrap-dynamic-extent]: Definition that corresponds
	to to the clobber-it restart.

	* src/compiler/ir1tran.lisp (process-dynamic-extent-declaration):
	Rewritten.

	* src/compiler/x86/alloc.lisp (make-closure): Add constant
	arg dynamic-extent, and use it for allocation.

	* src/compiler/ir2tran.lisp (ir2-convert-closure) [#+x86]:
	Pass dynamic-extent to the make-closure vop.
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 1.17 - 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 toy 1.78 - Added VOPs for CHAR=, CHAR<, and CHAR> when the second arg is a
67     constant character.
68     - Added missing VOPs for Sparc for array refs with a constant
69     index.
70     - Lisp binary will also look at the PATH envvar to find out it's
71     own location which is used to find other needed files.
72 gerd 1.1
73     * Numerous ANSI compliance fixes:
74 gerd 1.5 - Many bugs in CMUCL's type system detected by Paul Dietz'
75     ANSI test suite have been fixed.
76     - Non-keyword keyword names in lambda lists are now accepted.
77 gerd 1.6 - Condition slot initialization fixed for the case that two
78     or more slots have the same :INITARG.
79 gerd 1.7 - Initforms are now evaluated once only during condition slot
80     initialization.
81     - USE-VALUE, STORE-VALUE, CONTINUE behavior corrected in presence
82     of multiple restarts having the same name.
83     - RESTART-CASE's interaction with local macros fixed.
84     - Interaction of COMPUTE-RESTARTS and RESTART-CASE fixed in
85     presence of multiple restarts having the same name.
86 gerd 1.8 - Condition slot readers/writers are generic functions.
87 gerd 1.9 - &WHOLE, &REST, &BODY in macro lambda lists can be followed
88     by destructuring patterns. The previous behavior of &BODY
89     when followed by (<body> <declarations> <doc>) is available
90     through the new lambda-list keyword EXT:&PARSE-BODY.
91 gerd 1.10 - ELT now signals an error in safe code when used on lists
92     with an out-of-bounds index.
93     - Accessing arrays in compiled code with out-of-bounds indices
94     now signals a TYPE-ERROR.
95 gerd 1.11 - DECLARE no longer being a special operator.
96 gerd 1.16 - DEFINE-CONDITION accepts slot option :DOCUMENTATION.
97 gerd 1.18 - Behavior of (... &KEY &ALLOW-OTHER-KEYS) fixed for
98     DESTRUCTURING-BIND and macros.
99 gerd 1.19 - Stricter checking of keyword argument list in CLOS methods.
100 gerd 1.20 - &ENVIRONMENT variable bound bound before other vars, regardless
101     of where it appears in a lambda-list.
102 gerd 1.22 - VALUES types no longer accepting &KEY or &ALLOW-OTHER-KEYS.
103     - THE conforming to ANSI.
104 gerd 1.24 - SLOT-EXISTS-P can be used with conditions.
105 gerd 1.32 - REMOVE-METHOD always returning the generic function passed to it.
106     - Standard methods for STANDARD-OBJECT and STRUCTURE-OBJECT
107     defined on MAKE-LOAD-FORM.
108     - Compliant MAKE-LOAD-FORM-SAVING-SLOTS.
109 gerd 1.37 - DEFSTRUCT recording slot-names as specified by users.
110 gerd 1.40 - Generic function call keyword argument checking according to
111     ANSI 7.6.5.
112 gerd 1.45 - CALL-NEXT-METHOD without arguments being called with original
113     arguments when method parameters are changed with SETQ.
114     - When CALL-NEXT-METHOD is called with arguments, an error is
115     signaled in safe code when the set of methods applicable to
116     CALL-NEXT-METHOD's arguments is different from the set of
117     methods applicable to the original method arguments.
118 gerd 1.46 - FIND-METHOD signaling an error when called with specializers
119     not corresponding to the number of required arguments of the
120     supplied generic function.
121 gerd 1.48 - TYPE-OF returning KEYWORD for keywords, STANDARD-CHAR for
122     standard characters, BOOLEAN for T, (INTEGER <N> <N>) for
123     integers N, non-list types for functions, and CLOS classes for
124     instances whose class doesn't have a proper name.
125 gerd 1.49 - Class precedence list of NULL not having SYMBOL before LIST,
126     precedence list of STANDARD-METHOD not having METHOD before
127     STANDARD-OBJECT.
128 gerd 1.55 - ADD-METHOD returning its first argument, the generic function.
129 gerd 1.54 - DEFCLASS redefining a class with the given name only if the
130     name is the proper name of an existing class.
131 gerd 1.57 - KEYWORD package no longer having nickname "".
132 gerd 1.60 - COMMON-LISP-USER package no longer having nickname USER.
133     - COMMON-LISP package no longer having nickname LISP; LISP
134     and COMMON-LISP are now separate packages.
135 gerd 1.58 - SLOT-VALUE, (SETF SLOT-VALUE), SLOT-BOUNDP, SLOT-MAKUNBOUND
136     returning values specified by the standard when SLOT-UNBOUND
137     or SLOT-MISSING are called and return.
138 gerd 1.65 - NTH and NTHCDR accepting bignums as first argument.
139 gerd 1.66 - First arg of CERROR may be a function.
140 gerd 1.67 - Lambda-lists of the form (X . Y) in DESTRUCTURING-BIND and macros
141     are now equivalent to (X &REST Y).
142 gerd 1.69 - LAST, BUTLAST, NBUTLAST accepting bignum counts.
143 gerd 1.71 - WITH-OUTPUT-TO-STRING accepting :ELEMENT-TYPE.
144 gerd 1.75 - FIXNUM no longer naming a function.
145 toy 1.78 - MAKE-STRING-OUTPUT-STREAM accepts :ELEMENT-TYPE.
146 gerd 1.1
147     * Numerous bugfixes:
148 gerd 1.12 - NSET-EXCLUSIVE-OR returns the same results as SET-EXCLUSIVE-OR
149     wrt to duplicate elements.
150 gerd 1.11 - Forms like (MULTIPLE-VALUE-BIND 'LIST) no longer trapping
151     an internal compiler error when compiled.
152 gerd 1.16 - PARSE-INTEGER signaling PARSE-ERROR.
153     - Compiler eliminating some type checks in safe code.
154 gerd 1.41 - Byte-compiler and -interpreter not handling C:&MORE.
155     - Some TYPE-ERRORs being signaled with unbound slots, which
156     made them undisplayable.
157 gerd 1.62 - Structure predicates no longer signaling an error when applied
158     to obsolete instances.
159 gerd 1.64 - A DEFTRANSFORM for array bounds checking had an off-by-1 error.
160 toy 1.78 - Compiler was not properly deriving the type of FTRUNCATE in all
161     cases.
162     - Fixed error wherein certain uses of 2 arg ATAN caused a
163     compiler error on x86.
164 gerd 1.1
165     * Other changes:
166 emarsden 1.72 - CREATE-REQUEST-SERVER has an additional :reuse-address keyword
167     argument.
168 emarsden 1.21 - Removed obsolete alias from MAKE-VECTOR to MAKE-ARRAY
169 emarsden 1.44 - the signature of *COMPILER-NOTIFICATION-FUNCTION* has changed;
170     it now has an extra argument that describes the nature of the
171     error or warning.
172 toy 1.78 - File versioning occurs when the version component is :NEWEST,
173 toy 1.56 and Emacs style file versions are created: foo.bar.~N~, where
174     the larger N is newer. foo.bar is the newest version.
175     - Converting namestrings to pathnames now get a version component
176     of NIL instead of :NEWEST.
177 toy 1.78 - *DEFAULT-PATHNAME-DEFAULTS* has a version component of
178     :UNSPECIFIC instead of :NEWEST so versioning is disabled by
179 toy 1.56 default to preserve current behavior. Set the version to
180 toy 1.78 :NEWEST to create versions.
181 gerd 1.73 - LDB backtrace on x86.
182 gerd 1.79 - DYNAMIC-EXTENT support on x86 and sparc for &REST arg lists and
183     closures. Stack-allocation can be controlled with the new
184     variable EXT:*TRUST-DYNAMIC-EXTENT-DECLARATIONS*, which see.
185     Default is to stack-allocate if speed >= safety. Be warned
186     that all bets are off if a stack-allocated object or parts of
187     it escape; CMUCL might crash or format your hard disk.
188 gerd 1.1
189     * Numerous improvements to the PCL implementation of CLOS:
190     - Gerd's PCL has been added, which fixes numerous bugs and ANSI/
191     AMOP non-compliances, and adds various new optimizations (also
192     see the CMU User Manual).
193 gerd 1.2 - PCL's class hierarchy has been changed to conform to AMOP, for
194     instance, GENERIC-FUNCTION is now a subclass of
195     STANDARD-OBJECT.
196 gerd 1.4 - ENSURE-CLASS-USING-CLASS's argument list has been changed
197     to conform to AMOP.
198 gerd 1.5 - COMPUTE-EFFECTIVE-SLOT-DEFINITION now takes a slot name as
199     argument, for AMOP compliance.
200 gerd 1.9 - SUBTYPEP works in presence of forward-referenced classes.
201 gerd 1.13 - Accessing slots of specialized parameters in (SETF
202     SLOT-VALUE-USING-CLASS) methods works.
203 gerd 1.14 - DIRECT-SLOT-DEFINITION-CLASS and EFFECTIVE-SLOT-DEFINITION-CLASS
204     AMOP compliant.
205 gerd 1.15 - ALLOCATE-INSTANCE working with structures defined with DEFSTRUCT.
206 gerd 1.23 - With (DEFGENERIC FOO (&REST X &KEY)) (DEFMETHOD FOO (&REST X) X),
207     (FOO 1) now signals an error.
208 gerd 1.33 - Methods with &OPTIONAL arguments detecting too many args.
209 gerd 1.35 - DEFMETHOD and DEFGENERIC detecting doubled lambda variables.
210 gerd 1.34 - DEFGENERIC :ARGUMENT-PRECEDENCE-ORDER option checking.
211     - SLOT-VALUE, (SETF SLOT-VALUE), SLOT-BOUNDP working with conditions.
212 gerd 1.36 - (SETF SLOT-VALUE) working on read-only structure slots like
213     in other implementations.
214 gerd 1.38 - The declaration identifiers SLOTS, AUTO-COMPILE,
215     NOT-AUTO-COMPILE have been moved from PCL to EXT.
216 gerd 1.42 - Support for inlineing methods in effective methods; see the
217     CMU User Manual.
218 gerd 1.47 - Wrong results could be returned from generic functions when
219     all methods returned constant values, and some methods were
220     qualified, or the generic function didn't use the standard
221     method combination.
222 gerd 1.59 - For standard method combination and method combinations defined
223     with the short form of DEFINE-METHOD-COMBINATION: If there are
224     no applicable primary methods when a generic function is
225     called, the generic function PCL:NO-PRIMARY-METHOD is called.
226     The default method of this generic function signals a
227     continuable error of type PCL:NO-PRIMARY-METHOD-ERROR.
228 gerd 1.74 - Effective methods are no longer precomputed at method load
229     time, for conformance with CLtS.
230     PCL:*MAX-EMF-PRECOMPUTATION-METHODS* can be set to a number >
231     0 to allow effective method precomputation when the generic
232     function in question has less than the specified number of
233     methods.
234 gerd 1.1
235     * Improvements to Hemlock, the Emacs-like editor:
236    
237     * Changes to rebuilding procedure:
238    
239     * Deprecated features:
240 gerd 1.39 - EXT:ENCAPSULATE and associated functions; use fwrappers instead.
241 gerd 1.1
242     This release is not binary compatible with code compiled using CMUCL
243     18e; you will need to recompile FASL files.
244    
245     See <URL:http://www.cons.org/cmucl/> for download information,
246     guidelines on reporting bugs, and mailing list details.
247    
248    
249     We hope you enjoy using this release of CMUCL!
250    

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