1 Revision history for Scope-Upper
3 0.30 2017-11-04 15:55 UTC
4 + Fix : [RT #123481] : Compatibility with CV-in-stash optimisation
5 Thanks Father Chrysostomos for reporting and contributing a
8 0.29 2016-06-06 12:00 UTC
9 + Chg : A large chunk of boilerplate XS code, which is also used in
10 other XS modules, has been factored out of the main .xs file
11 to a collection of .h files in the xsh subdirectory.
12 + Fix : [RT #112246] : Blead breaks Scope::Upper
13 Dave Mitchell provided a new implementation of reap(),
14 localize_*() and uplevel() to match the new context stack
15 handling in perl 5.24. Many thanks to him.
17 0.28 2015-08-18 15:00 UTC
18 + Chg : SUB() and EVAL() will now warn if they cannot find an
19 appropriate context in the current stack. They will still
20 return undef in this case, which is interpreted as the current
21 context when combined with other words.
22 + Fix : [RT #104751] : Scope::Upper does not handle exotic stack types
23 Trying to target a scope above the current perl scope will now
24 result in a warning. In that case, the topmost context in the
25 current stack will still be returned.
26 Thanks Rafaël Garcia-Suarez for the report.
27 + Fix : Test failures of threads tests on systems with harsh resource
28 constraints causing the threads to exit() during run.
29 + Opt : Some internal structures were shrunk, resulting in memory
30 savings and small speedups.
32 0.27 2015-03-27 22:10 UTC
33 + Chg : The new environment variable to enable thread tests on older
34 perls is PERL_FORCE_TEST_THREADS. Note that this variable
35 should only be turned on by authors.
36 + Fix : Segfaults when the module is loaded by several threads (or
37 Windows emulated processes) ran in parallel.
38 + Fix : Memory leak with the uid() feature.
39 + Fix : Update the Windows ActivePerl + gcc 3.4 workaround for
40 ExtUtils::MakeMaker 7.04. Thanks Christian Walde for reporting
41 and feedback on this issue.
42 + Fix : reap(), localize(), localize_elem() and localize_delete()
43 will again work correctly on perl 5.19.4+ when the debugger
45 + Fix : Silence some compiler warnings.
47 0.26 2015-03-12 23:30 UTC
48 + Fix : [RT #100264] : Don't use CvPADLIST on XSUBs
49 Thanks Father Chrysostomos for reporting and contributing a
51 + Fix : Be really compatible with the optional OP_PARENT feature.
53 0.25 2014-09-21 17:10 UTC
54 + Add : Support for the PERL_OP_PARENT optional feature introduced in
56 + Fix : Work around an assertion failure in perl 5.21.4.
58 0.24 2013-09-10 11:10 UTC
59 + Fix : Lexicals returned with unwind(), yield() and leave() will no
60 longer be lost on perl 5.19.4 and above.
62 0.23 2013-09-02 11:30 UTC
63 This is a maintenance release. The code contains no functional change.
64 Satisfied users of version 0.22 can skip this update.
65 + Fix : [RT #87178] : typo fixes.
66 Thanks dsteinbrunner@pobox.com for the patch.
67 + Fix : [RT #88177] : 5.19.3 block hint test breakage
68 t/07-context_info.t has been taught about perl 5.19.3.
69 Thanks Andrew Main for the patch.
70 + Tst : Author tests are no longer bundled with this distribution.
71 They are only made available to authors in the git repository.
72 + Tst : "given is experimental" warnings when running tests on perl
73 5.18 and above have been silenced.
75 0.22 2013-01-30 23:35 UTC
76 + Chg : perl 5.6.1 is required.
77 + Fix : context_info() now ignores %warnings::Bits for perl 5.8.6 and
78 below, just like caller().
79 + Fix : [RT #82220] : Scope-Upper-0.21 test stuck on Windows perl 5.12.3
80 t/93-pod-spelling.t will not crash anymore on perl 5.12 and
82 Thanks Gabor Szabo for reporting and Slaven Rezic for debugging
84 + Tst : Rare test failures of t/07-context_info.t on perl 5.6,
85 t/55-yield-target.t on perl 5.[68], and t/63-uplevel-ctl.t on
86 perl 5.8.[345] have been addressed.
88 0.21 2012-09-21 15:10 UTC
89 + Fix : context_info() has been taught about perl 5.17.4.
90 + Fix : t/07-context_info.t will no longer fail with perls that have
91 sitecustomize enabled (like many perl builds for Windows).
92 Thanks Steve Hay and Nicholas Clark for debugging help.
93 + Fix : Broken linkage on Windows with gcc 3.4, which appears in
94 particular when using ActivePerl's default compiler suite.
95 For those setups, the Scope::Upper shared library will now be
96 linked against the perl dll directly (instead of the import
99 0.20 2012-09-17 11:00 UTC
100 + Add : The new yield(@values, $context) function can be used to return
101 values to any upper scope, including do or map blocks.
102 The new leave(@values) function is an alias for
103 yield(@values, HERE).
104 + Add : The new context_info($context) function return information
105 about context $context, similarly to what caller() provides
106 but for any upper scope.
107 + Chg : Contexts are now normalized. In previous versions, it was
108 possible for different contexts to refer to the same scope :
109 for example, "for (my $i = 0; $i < 10; ++$i) { ... }" was
110 reachable through two contexts, while "for (@array) { ... }"
111 only by one. Starting from this version, contexts are
112 normalized so that they always represent an actual scope.
113 + Doc : C++ compilers are officially NOT supported.
114 + Fix : Building with a more recent version of perl 5.17.4.
115 + Fix : Debugger compatibility with perl 5.17.1 and above.
117 0.19 2012-09-01 13:25 UTC
118 + Doc : POD headings have been made linkable.
119 + Fix : Building with perl 5.17.4.
120 + Fix : BUILD_PREREQS are now set for ExtUtils::MakeMaker.
121 + Opt : uplevel() private data structure is 7% smaller on 64 bits
123 + Tst : Author tests overhaul.
125 0.18 2011-10-10 20:50 UTC
126 + Add : The uid() function returns an unique identifier for each dynamic
127 scope. The validate_uid() function can be used to check whether
128 one such identifier is valid (i.e. that the scope it refers to
130 + Chg : It is no longer possible on perl 5.6 to call goto() in an
131 uplevel callback to replace the uplevel call. This change was
132 needed in order to ensure consistency between platforms
133 regarding to the following fix just below.
134 + Fix : The uplevel() tests now pass on Windows.
135 Thanks C.H. Kang for bringing this to my attention.
137 0.17 2011-10-03 21:45 UTC
138 + Fix : uplevel() will now use the correct pad when executing its
139 callback. This fixes at least two issues :
140 - closures defined inside the uplevel callback can now correctly
141 access lexicals from inside and outside the callback.
142 - state variables in the uplevel callback now work properly.
143 + Fix : It is now generally possible to call goto() in the uplevel'd
144 code to replace the uplevel stack frame. There are two cases
145 for which it is still not possible :
146 - if -D flags were set when running perl (as in "perl -Dt ...").
147 - if the perl runloop has been replaced with a custom one by
149 If uplevel() detects that the replacement code contains a goto
150 statement, and is in one of those two cases, then it will refuse
151 to execute the callback and throw an exception.
152 Note that this fix implies a run-time overhead of uplevel()
153 proportional to the size of the the callback in every case
154 (with a small ratio), and proportional to the size of ALL the
155 code executed as the result of the uplevel call (including
156 subroutine calls inside the callback) when a goto statement is
157 found in the uplevel callback.
158 + Fix : uplevel() has been taught how to handle XS callbacks properly.
159 + Fix : The cause of "Attempt to free unreferenced scalar" warnings
160 when using uplevel() has been addressed.
161 + Fix : [RT #71212] : build failure on Windows.
162 The module does no longer rely on calling Perl_cv_clone, which
164 Thanks C.H. Kang for reporting.
166 0.16 2011-09-03 23:00 UTC
167 + Add : uplevel($code, @args, $cxt) executes $code with arguments @args
168 in the upper context pointed by $cxt.
169 This is an XS version of the well-known uplevel() routine from
170 Sub::Uplevel. There are a few differences between both
171 implmentations that are listed in the documentation.
172 The XS version is roughly 10 times faster than the pure-Perl
175 0.15 2011-08-24 14:20 UTC
176 + Fix : Localizing subroutines in an higher scope will now correctly
177 update the method cache.
179 0.14 2011-02-27 00:00 UTC
180 + Fix : [RT #64997] : Compatibility with perl 5.13.10.
181 Thanks Dave Mitchell for the notice.
182 + Tst : Lengthy tests have been ported to Test::Leaner, making the
183 whole test suite about 50% faster.
185 0.13 2010-12-20 01:00 UTC
186 + Fix : [RT #61904] : Stack corruption when using unwind() under
188 Thanks Sergey Aleynikov for contributing a fix.
189 + Fix : [RT #63378] : Compatibility with perl 5.13.8.
190 Thanks Andreas J. König for bisecting the issue.
191 + Tst : Threads tests are now only run on perl 5.13.4 and higher.
192 They could segfault randomly because of what seems to be an
193 internal bug of Perl, which has been addressed in 5.13.4.
194 There is also an environment variable that allows you to
195 forcefully run those tests, but it should be set only for
196 author testing and not for end users.
198 0.12 2010-05-19 00:45 UTC
199 + Fix : Compatibility with perl 5.13.
200 + Fix : Test failures with perl 5.8.0.
201 + Fix : A minor leak of SVs when a non array/hash was passed to
204 0.11 2010-04-16 23:20 UTC
205 + Chg : It's now forbiddent to pass a reference to a non-glob variable
206 as the localization target of localize(), localize_elem() and
208 + Chg : localize_elem() now only accepts localization of arrays or hashs
209 elements. For other types, it used to be a synonym of localize.
210 + Chg : localize_elem() no longer accepts a glob as the target. You now
211 have to specify the variable as a string. This is because it was
212 impossible in this case to handle meaningfully the array or the
213 hash reference passed as the assigned value.
214 + Doc : The synopsys was revamped, and the rest of the documentation was
216 + Fix : [RT #55593] : Segfault when localizing hash or array element to
217 different package in different file.
218 Thanks Dagfinn Ilmari Mannsåker for reporting.
219 + Fix : [RT #56301] : reap loses eval context when dying naturally.
220 Thanks Andrew Main for reporting.
221 + Fix : Scope inconsistencies and segfaults when saving several
222 localizations into the same target scope.
223 + Fix : Stop skipping frames as a pop optimization. This caused breakage
224 under the debugger (and most likely outside as well).
226 0.10 2010-01-18 23:50 UTC
227 + Fix : Properly handle given/when on 5.10.
228 + Fix : Some stack inconsistencies were fixed, though they were unlikely
229 to have an impact on your real-life code.
230 + Fix : Work around Kwalitee test misfailures.
232 0.09 2009-05-17 20:20 UTC
233 + Add : The new SU_THREADSAFE constant can be used to know whether the
234 module could have been built with thread safety enabled.
235 + Chg : Thread safety is disabled for perl 5.8 on Win32.
236 + Chg : A saner workaround for the "call_sv() during LEAVE clobbers the
237 still used last popped stack element" issue on 5.10.
239 0.08 2009-04-16 22:50 UTC
240 + Fix : [RT #44204] : Stack corruption with reap(). Thanks Torsten
241 Foertsch for reporting.
242 + Fix : Building with Solaris CC.
243 + Tst : unwind() in threads.
245 0.07 2009-02-20 00:20 UTC
246 + Chg : The CLONE method will no longer be defined for non-threaded
248 + Doc : Some examples on how to build the target context from the words.
249 + Fix : Some unlikely possible uninitialized reads, indirectly pointed
250 out in a Redhat review request.
251 + Fix : "localize *x, 'y' => $cxt" now matches Perl's behaviour for
253 + Fix : Miscellanous code cleanups, courtesy of Florian Ragwitz.
254 + Upd : Resources in META.yml.
256 0.06 2009-01-17 00:05 UTC
257 + Chg : INCOMPATIBLE CHANGE: The level is now absolute and no longer
258 relative to the current frame - we'll call it "context" from now
259 on. You should replace all your raw levels by combinations of
261 The old behaviour of "=> $n" can be easily reobtained by using
263 + Fix : As a result of this change, the module now plays nicely with
266 0.05 2009-01-12 18:15 UTC
267 + Fix : Stack mess when using unwind() in scalar context.
268 + Fix : Returning an automatic variable isn't wise, so let's use a
270 + Doc : Clarifications.
271 + Tst : Stress tests for unwind().
273 0.04 2009-01-11 18:40 UTC
274 + Add : unwind(@things, $level), that returns to an upper context.
275 + Add : want_at($level), that gives the wantarray for $level.
276 + Add : Control words, to reliably get the level of the n-th upper
277 subroutine or eval scope. TOPLEVEL was renamed to TOP.
278 + Fix : Tests with 5.6.
279 + Tst : Reordering and factoring some of the stress tests so that they
280 aren't needlessly ran several times.
282 0.03 2009-01-04 15:55 UTC
283 + Add : localize_delete(), that localize array/hash elements in upper
285 + Fix : Segfault when localizing array elements with an invalid negative
288 0.02 2008-12-28 18:40 UTC
289 + Doc : Clarifications and improvements.
290 + Fix : Missing compatibility macros.
291 + Fix : Localized nonexistant array elements should be deleted when
292 their time comes so that the array recovers its original length.
294 0.01 2008-12-26 16:05 UTC
295 First version, released on an unsuspecting world.