1 Revision history for Scope-Upper
3 0.34 2023-03-26 16:00 UTC
4 + Add : Contributing guidelines are now listed in the new
6 + Fix : [RT #146897] Scope::Upper does not know about RCPV
7 cop_warnings, and does not know that given is deprecated.
8 "given" related warnings were silenced, and the new RCPV
10 Thanks Yves Orton for reporting and contributing a fix.
11 + Fix : Assertion failures triggering on perl version 5.37.10 and
12 higher with DEBUGGING enabled.
13 + Fix : t/64-uplevel-caller.t has been taught about the new call frame
16 0.33 2021-12-20 20:30 UTC
17 + Fix : [RT #114816] resources/remote/url points to web interface
18 META files now follow version 2.0 of the CPAN META spec.
19 Thanks Kent Fredric for reporting.
20 + Fix : [RT #139823] : Perl 5 blead breads t/07-context_info.t
21 t/07-context_info.t has been hardened against warning bits
23 Thanks Jim Keenan and Tony Cook for reporting and contributing
26 0.32 2019-07-08 12:50 UTC
27 + Fix : [RT #129539] : fails with v5.27.3 and later with DEBUGGING
28 The module has been amended to accomodate with a change of
29 behaviour of a core macro.
32 0.31 2018-08-26 19:50 UTC
33 + Fix : [RT #125931] : localized SCALAR doesn't get imported
34 localize '$Foo::x' => $var now properly imports $x into Foo.
35 Thanks Vernon Lyon for reporting.
37 0.30 2017-11-04 15:55 UTC
38 + Fix : [RT #123481] : Compatibility with CV-in-stash optimisation
39 Thanks Father Chrysostomos for reporting and contributing a
42 0.29 2016-06-06 12:00 UTC
43 + Chg : A large chunk of boilerplate XS code, which is also used in
44 other XS modules, has been factored out of the main .xs file
45 to a collection of .h files in the xsh subdirectory.
46 + Fix : [RT #112246] : Blead breaks Scope::Upper
47 Dave Mitchell provided a new implementation of reap(),
48 localize_*() and uplevel() to match the new context stack
49 handling in perl 5.24. Many thanks to him.
51 0.28 2015-08-18 15:00 UTC
52 + Chg : SUB() and EVAL() will now warn if they cannot find an
53 appropriate context in the current stack. They will still
54 return undef in this case, which is interpreted as the current
55 context when combined with other words.
56 + Fix : [RT #104751] : Scope::Upper does not handle exotic stack types
57 Trying to target a scope above the current perl scope will now
58 result in a warning. In that case, the topmost context in the
59 current stack will still be returned.
60 Thanks Rafaël Garcia-Suarez for the report.
61 + Fix : Test failures of threads tests on systems with harsh resource
62 constraints causing the threads to exit() during run.
63 + Opt : Some internal structures were shrunk, resulting in memory
64 savings and small speedups.
66 0.27 2015-03-27 22:10 UTC
67 + Chg : The new environment variable to enable thread tests on older
68 perls is PERL_FORCE_TEST_THREADS. Note that this variable
69 should only be turned on by authors.
70 + Fix : Segfaults when the module is loaded by several threads (or
71 Windows emulated processes) ran in parallel.
72 + Fix : Memory leak with the uid() feature.
73 + Fix : Update the Windows ActivePerl + gcc 3.4 workaround for
74 ExtUtils::MakeMaker 7.04. Thanks Christian Walde for reporting
75 and feedback on this issue.
76 + Fix : reap(), localize(), localize_elem() and localize_delete()
77 will again work correctly on perl 5.19.4+ when the debugger
79 + Fix : Silence some compiler warnings.
81 0.26 2015-03-12 23:30 UTC
82 + Fix : [RT #100264] : Don't use CvPADLIST on XSUBs
83 Thanks Father Chrysostomos for reporting and contributing a
85 + Fix : Be really compatible with the optional OP_PARENT feature.
87 0.25 2014-09-21 17:10 UTC
88 + Add : Support for the PERL_OP_PARENT optional feature introduced in
90 + Fix : Work around an assertion failure in perl 5.21.4.
92 0.24 2013-09-10 11:10 UTC
93 + Fix : Lexicals returned with unwind(), yield() and leave() will no
94 longer be lost on perl 5.19.4 and above.
96 0.23 2013-09-02 11:30 UTC
97 This is a maintenance release. The code contains no functional change.
98 Satisfied users of version 0.22 can skip this update.
99 + Fix : [RT #87178] : typo fixes.
100 Thanks dsteinbrunner@pobox.com for the patch.
101 + Fix : [RT #88177] : 5.19.3 block hint test breakage
102 t/07-context_info.t has been taught about perl 5.19.3.
103 Thanks Andrew Main for the patch.
104 + Tst : Author tests are no longer bundled with this distribution.
105 They are only made available to authors in the git repository.
106 + Tst : "given is experimental" warnings when running tests on perl
107 5.18 and above have been silenced.
109 0.22 2013-01-30 23:35 UTC
110 + Chg : perl 5.6.1 is required.
111 + Fix : context_info() now ignores %warnings::Bits for perl 5.8.6 and
112 below, just like caller().
113 + Fix : [RT #82220] : Scope-Upper-0.21 test stuck on Windows perl 5.12.3
114 t/93-pod-spelling.t will not crash anymore on perl 5.12 and
116 Thanks Gabor Szabo for reporting and Slaven Rezic for debugging
118 + Tst : Rare test failures of t/07-context_info.t on perl 5.6,
119 t/55-yield-target.t on perl 5.[68], and t/63-uplevel-ctl.t on
120 perl 5.8.[345] have been addressed.
122 0.21 2012-09-21 15:10 UTC
123 + Fix : context_info() has been taught about perl 5.17.4.
124 + Fix : t/07-context_info.t will no longer fail with perls that have
125 sitecustomize enabled (like many perl builds for Windows).
126 Thanks Steve Hay and Nicholas Clark for debugging help.
127 + Fix : Broken linkage on Windows with gcc 3.4, which appears in
128 particular when using ActivePerl's default compiler suite.
129 For those setups, the Scope::Upper shared library will now be
130 linked against the perl dll directly (instead of the import
133 0.20 2012-09-17 11:00 UTC
134 + Add : The new yield(@values, $context) function can be used to return
135 values to any upper scope, including do or map blocks.
136 The new leave(@values) function is an alias for
137 yield(@values, HERE).
138 + Add : The new context_info($context) function return information
139 about context $context, similarly to what caller() provides
140 but for any upper scope.
141 + Chg : Contexts are now normalized. In previous versions, it was
142 possible for different contexts to refer to the same scope :
143 for example, "for (my $i = 0; $i < 10; ++$i) { ... }" was
144 reachable through two contexts, while "for (@array) { ... }"
145 only by one. Starting from this version, contexts are
146 normalized so that they always represent an actual scope.
147 + Doc : C++ compilers are officially NOT supported.
148 + Fix : Building with a more recent version of perl 5.17.4.
149 + Fix : Debugger compatibility with perl 5.17.1 and above.
151 0.19 2012-09-01 13:25 UTC
152 + Doc : POD headings have been made linkable.
153 + Fix : Building with perl 5.17.4.
154 + Fix : BUILD_PREREQS are now set for ExtUtils::MakeMaker.
155 + Opt : uplevel() private data structure is 7% smaller on 64 bits
157 + Tst : Author tests overhaul.
159 0.18 2011-10-10 20:50 UTC
160 + Add : The uid() function returns an unique identifier for each dynamic
161 scope. The validate_uid() function can be used to check whether
162 one such identifier is valid (i.e. that the scope it refers to
164 + Chg : It is no longer possible on perl 5.6 to call goto() in an
165 uplevel callback to replace the uplevel call. This change was
166 needed in order to ensure consistency between platforms
167 regarding to the following fix just below.
168 + Fix : The uplevel() tests now pass on Windows.
169 Thanks C.H. Kang for bringing this to my attention.
171 0.17 2011-10-03 21:45 UTC
172 + Fix : uplevel() will now use the correct pad when executing its
173 callback. This fixes at least two issues :
174 - closures defined inside the uplevel callback can now correctly
175 access lexicals from inside and outside the callback.
176 - state variables in the uplevel callback now work properly.
177 + Fix : It is now generally possible to call goto() in the uplevel'd
178 code to replace the uplevel stack frame. There are two cases
179 for which it is still not possible :
180 - if -D flags were set when running perl (as in "perl -Dt ...").
181 - if the perl runloop has been replaced with a custom one by
183 If uplevel() detects that the replacement code contains a goto
184 statement, and is in one of those two cases, then it will refuse
185 to execute the callback and throw an exception.
186 Note that this fix implies a run-time overhead of uplevel()
187 proportional to the size of the the callback in every case
188 (with a small ratio), and proportional to the size of ALL the
189 code executed as the result of the uplevel call (including
190 subroutine calls inside the callback) when a goto statement is
191 found in the uplevel callback.
192 + Fix : uplevel() has been taught how to handle XS callbacks properly.
193 + Fix : The cause of "Attempt to free unreferenced scalar" warnings
194 when using uplevel() has been addressed.
195 + Fix : [RT #71212] : build failure on Windows.
196 The module does no longer rely on calling Perl_cv_clone, which
198 Thanks C.H. Kang for reporting.
200 0.16 2011-09-03 23:00 UTC
201 + Add : uplevel($code, @args, $cxt) executes $code with arguments @args
202 in the upper context pointed by $cxt.
203 This is an XS version of the well-known uplevel() routine from
204 Sub::Uplevel. There are a few differences between both
205 implmentations that are listed in the documentation.
206 The XS version is roughly 10 times faster than the pure-Perl
209 0.15 2011-08-24 14:20 UTC
210 + Fix : Localizing subroutines in an higher scope will now correctly
211 update the method cache.
213 0.14 2011-02-27 00:00 UTC
214 + Fix : [RT #64997] : Compatibility with perl 5.13.10.
215 Thanks Dave Mitchell for the notice.
216 + Tst : Lengthy tests have been ported to Test::Leaner, making the
217 whole test suite about 50% faster.
219 0.13 2010-12-20 01:00 UTC
220 + Fix : [RT #61904] : Stack corruption when using unwind() under
222 Thanks Sergey Aleynikov for contributing a fix.
223 + Fix : [RT #63378] : Compatibility with perl 5.13.8.
224 Thanks Andreas J. König for bisecting the issue.
225 + Tst : Threads tests are now only run on perl 5.13.4 and higher.
226 They could segfault randomly because of what seems to be an
227 internal bug of Perl, which has been addressed in 5.13.4.
228 There is also an environment variable that allows you to
229 forcefully run those tests, but it should be set only for
230 author testing and not for end users.
232 0.12 2010-05-19 00:45 UTC
233 + Fix : Compatibility with perl 5.13.
234 + Fix : Test failures with perl 5.8.0.
235 + Fix : A minor leak of SVs when a non array/hash was passed to
238 0.11 2010-04-16 23:20 UTC
239 + Chg : It's now forbiddent to pass a reference to a non-glob variable
240 as the localization target of localize(), localize_elem() and
242 + Chg : localize_elem() now only accepts localization of arrays or hashs
243 elements. For other types, it used to be a synonym of localize.
244 + Chg : localize_elem() no longer accepts a glob as the target. You now
245 have to specify the variable as a string. This is because it was
246 impossible in this case to handle meaningfully the array or the
247 hash reference passed as the assigned value.
248 + Doc : The synopsys was revamped, and the rest of the documentation was
250 + Fix : [RT #55593] : Segfault when localizing hash or array element to
251 different package in different file.
252 Thanks Dagfinn Ilmari Mannsåker for reporting.
253 + Fix : [RT #56301] : reap loses eval context when dying naturally.
254 Thanks Andrew Main for reporting.
255 + Fix : Scope inconsistencies and segfaults when saving several
256 localizations into the same target scope.
257 + Fix : Stop skipping frames as a pop optimization. This caused breakage
258 under the debugger (and most likely outside as well).
260 0.10 2010-01-18 23:50 UTC
261 + Fix : Properly handle given/when on 5.10.
262 + Fix : Some stack inconsistencies were fixed, though they were unlikely
263 to have an impact on your real-life code.
264 + Fix : Work around Kwalitee test misfailures.
266 0.09 2009-05-17 20:20 UTC
267 + Add : The new SU_THREADSAFE constant can be used to know whether the
268 module could have been built with thread safety enabled.
269 + Chg : Thread safety is disabled for perl 5.8 on Win32.
270 + Chg : A saner workaround for the "call_sv() during LEAVE clobbers the
271 still used last popped stack element" issue on 5.10.
273 0.08 2009-04-16 22:50 UTC
274 + Fix : [RT #44204] : Stack corruption with reap(). Thanks Torsten
275 Foertsch for reporting.
276 + Fix : Building with Solaris CC.
277 + Tst : unwind() in threads.
279 0.07 2009-02-20 00:20 UTC
280 + Chg : The CLONE method will no longer be defined for non-threaded
282 + Doc : Some examples on how to build the target context from the words.
283 + Fix : Some unlikely possible uninitialized reads, indirectly pointed
284 out in a Redhat review request.
285 + Fix : "localize *x, 'y' => $cxt" now matches Perl's behaviour for
287 + Fix : Miscellanous code cleanups, courtesy of Florian Ragwitz.
288 + Upd : Resources in META.yml.
290 0.06 2009-01-17 00:05 UTC
291 + Chg : INCOMPATIBLE CHANGE: The level is now absolute and no longer
292 relative to the current frame - we'll call it "context" from now
293 on. You should replace all your raw levels by combinations of
295 The old behaviour of "=> $n" can be easily reobtained by using
297 + Fix : As a result of this change, the module now plays nicely with
300 0.05 2009-01-12 18:15 UTC
301 + Fix : Stack mess when using unwind() in scalar context.
302 + Fix : Returning an automatic variable isn't wise, so let's use a
304 + Doc : Clarifications.
305 + Tst : Stress tests for unwind().
307 0.04 2009-01-11 18:40 UTC
308 + Add : unwind(@things, $level), that returns to an upper context.
309 + Add : want_at($level), that gives the wantarray for $level.
310 + Add : Control words, to reliably get the level of the n-th upper
311 subroutine or eval scope. TOPLEVEL was renamed to TOP.
312 + Fix : Tests with 5.6.
313 + Tst : Reordering and factoring some of the stress tests so that they
314 aren't needlessly ran several times.
316 0.03 2009-01-04 15:55 UTC
317 + Add : localize_delete(), that localize array/hash elements in upper
319 + Fix : Segfault when localizing array elements with an invalid negative
322 0.02 2008-12-28 18:40 UTC
323 + Doc : Clarifications and improvements.
324 + Fix : Missing compatibility macros.
325 + Fix : Localized nonexistant array elements should be deleted when
326 their time comes so that the array recovers its original length.
328 0.01 2008-12-26 16:05 UTC
329 First version, released on an unsuspecting world.