1 Revision history for Scope-Upper
3 0.31 2018-08-26 19:50 UTC
4 + Fix : [RT #125931] : localized SCALAR doesn't get imported
5 localize '$Foo::x' => $var now properly imports $x into Foo.
6 Thanks Vernon Lyon for reporting.
8 0.30 2017-11-04 15:55 UTC
9 + Fix : [RT #123481] : Compatibility with CV-in-stash optimisation
10 Thanks Father Chrysostomos for reporting and contributing a
13 0.29 2016-06-06 12:00 UTC
14 + Chg : A large chunk of boilerplate XS code, which is also used in
15 other XS modules, has been factored out of the main .xs file
16 to a collection of .h files in the xsh subdirectory.
17 + Fix : [RT #112246] : Blead breaks Scope::Upper
18 Dave Mitchell provided a new implementation of reap(),
19 localize_*() and uplevel() to match the new context stack
20 handling in perl 5.24. Many thanks to him.
22 0.28 2015-08-18 15:00 UTC
23 + Chg : SUB() and EVAL() will now warn if they cannot find an
24 appropriate context in the current stack. They will still
25 return undef in this case, which is interpreted as the current
26 context when combined with other words.
27 + Fix : [RT #104751] : Scope::Upper does not handle exotic stack types
28 Trying to target a scope above the current perl scope will now
29 result in a warning. In that case, the topmost context in the
30 current stack will still be returned.
31 Thanks Rafaël Garcia-Suarez for the report.
32 + Fix : Test failures of threads tests on systems with harsh resource
33 constraints causing the threads to exit() during run.
34 + Opt : Some internal structures were shrunk, resulting in memory
35 savings and small speedups.
37 0.27 2015-03-27 22:10 UTC
38 + Chg : The new environment variable to enable thread tests on older
39 perls is PERL_FORCE_TEST_THREADS. Note that this variable
40 should only be turned on by authors.
41 + Fix : Segfaults when the module is loaded by several threads (or
42 Windows emulated processes) ran in parallel.
43 + Fix : Memory leak with the uid() feature.
44 + Fix : Update the Windows ActivePerl + gcc 3.4 workaround for
45 ExtUtils::MakeMaker 7.04. Thanks Christian Walde for reporting
46 and feedback on this issue.
47 + Fix : reap(), localize(), localize_elem() and localize_delete()
48 will again work correctly on perl 5.19.4+ when the debugger
50 + Fix : Silence some compiler warnings.
52 0.26 2015-03-12 23:30 UTC
53 + Fix : [RT #100264] : Don't use CvPADLIST on XSUBs
54 Thanks Father Chrysostomos for reporting and contributing a
56 + Fix : Be really compatible with the optional OP_PARENT feature.
58 0.25 2014-09-21 17:10 UTC
59 + Add : Support for the PERL_OP_PARENT optional feature introduced in
61 + Fix : Work around an assertion failure in perl 5.21.4.
63 0.24 2013-09-10 11:10 UTC
64 + Fix : Lexicals returned with unwind(), yield() and leave() will no
65 longer be lost on perl 5.19.4 and above.
67 0.23 2013-09-02 11:30 UTC
68 This is a maintenance release. The code contains no functional change.
69 Satisfied users of version 0.22 can skip this update.
70 + Fix : [RT #87178] : typo fixes.
71 Thanks dsteinbrunner@pobox.com for the patch.
72 + Fix : [RT #88177] : 5.19.3 block hint test breakage
73 t/07-context_info.t has been taught about perl 5.19.3.
74 Thanks Andrew Main for the patch.
75 + Tst : Author tests are no longer bundled with this distribution.
76 They are only made available to authors in the git repository.
77 + Tst : "given is experimental" warnings when running tests on perl
78 5.18 and above have been silenced.
80 0.22 2013-01-30 23:35 UTC
81 + Chg : perl 5.6.1 is required.
82 + Fix : context_info() now ignores %warnings::Bits for perl 5.8.6 and
83 below, just like caller().
84 + Fix : [RT #82220] : Scope-Upper-0.21 test stuck on Windows perl 5.12.3
85 t/93-pod-spelling.t will not crash anymore on perl 5.12 and
87 Thanks Gabor Szabo for reporting and Slaven Rezic for debugging
89 + Tst : Rare test failures of t/07-context_info.t on perl 5.6,
90 t/55-yield-target.t on perl 5.[68], and t/63-uplevel-ctl.t on
91 perl 5.8.[345] have been addressed.
93 0.21 2012-09-21 15:10 UTC
94 + Fix : context_info() has been taught about perl 5.17.4.
95 + Fix : t/07-context_info.t will no longer fail with perls that have
96 sitecustomize enabled (like many perl builds for Windows).
97 Thanks Steve Hay and Nicholas Clark for debugging help.
98 + Fix : Broken linkage on Windows with gcc 3.4, which appears in
99 particular when using ActivePerl's default compiler suite.
100 For those setups, the Scope::Upper shared library will now be
101 linked against the perl dll directly (instead of the import
104 0.20 2012-09-17 11:00 UTC
105 + Add : The new yield(@values, $context) function can be used to return
106 values to any upper scope, including do or map blocks.
107 The new leave(@values) function is an alias for
108 yield(@values, HERE).
109 + Add : The new context_info($context) function return information
110 about context $context, similarly to what caller() provides
111 but for any upper scope.
112 + Chg : Contexts are now normalized. In previous versions, it was
113 possible for different contexts to refer to the same scope :
114 for example, "for (my $i = 0; $i < 10; ++$i) { ... }" was
115 reachable through two contexts, while "for (@array) { ... }"
116 only by one. Starting from this version, contexts are
117 normalized so that they always represent an actual scope.
118 + Doc : C++ compilers are officially NOT supported.
119 + Fix : Building with a more recent version of perl 5.17.4.
120 + Fix : Debugger compatibility with perl 5.17.1 and above.
122 0.19 2012-09-01 13:25 UTC
123 + Doc : POD headings have been made linkable.
124 + Fix : Building with perl 5.17.4.
125 + Fix : BUILD_PREREQS are now set for ExtUtils::MakeMaker.
126 + Opt : uplevel() private data structure is 7% smaller on 64 bits
128 + Tst : Author tests overhaul.
130 0.18 2011-10-10 20:50 UTC
131 + Add : The uid() function returns an unique identifier for each dynamic
132 scope. The validate_uid() function can be used to check whether
133 one such identifier is valid (i.e. that the scope it refers to
135 + Chg : It is no longer possible on perl 5.6 to call goto() in an
136 uplevel callback to replace the uplevel call. This change was
137 needed in order to ensure consistency between platforms
138 regarding to the following fix just below.
139 + Fix : The uplevel() tests now pass on Windows.
140 Thanks C.H. Kang for bringing this to my attention.
142 0.17 2011-10-03 21:45 UTC
143 + Fix : uplevel() will now use the correct pad when executing its
144 callback. This fixes at least two issues :
145 - closures defined inside the uplevel callback can now correctly
146 access lexicals from inside and outside the callback.
147 - state variables in the uplevel callback now work properly.
148 + Fix : It is now generally possible to call goto() in the uplevel'd
149 code to replace the uplevel stack frame. There are two cases
150 for which it is still not possible :
151 - if -D flags were set when running perl (as in "perl -Dt ...").
152 - if the perl runloop has been replaced with a custom one by
154 If uplevel() detects that the replacement code contains a goto
155 statement, and is in one of those two cases, then it will refuse
156 to execute the callback and throw an exception.
157 Note that this fix implies a run-time overhead of uplevel()
158 proportional to the size of the the callback in every case
159 (with a small ratio), and proportional to the size of ALL the
160 code executed as the result of the uplevel call (including
161 subroutine calls inside the callback) when a goto statement is
162 found in the uplevel callback.
163 + Fix : uplevel() has been taught how to handle XS callbacks properly.
164 + Fix : The cause of "Attempt to free unreferenced scalar" warnings
165 when using uplevel() has been addressed.
166 + Fix : [RT #71212] : build failure on Windows.
167 The module does no longer rely on calling Perl_cv_clone, which
169 Thanks C.H. Kang for reporting.
171 0.16 2011-09-03 23:00 UTC
172 + Add : uplevel($code, @args, $cxt) executes $code with arguments @args
173 in the upper context pointed by $cxt.
174 This is an XS version of the well-known uplevel() routine from
175 Sub::Uplevel. There are a few differences between both
176 implmentations that are listed in the documentation.
177 The XS version is roughly 10 times faster than the pure-Perl
180 0.15 2011-08-24 14:20 UTC
181 + Fix : Localizing subroutines in an higher scope will now correctly
182 update the method cache.
184 0.14 2011-02-27 00:00 UTC
185 + Fix : [RT #64997] : Compatibility with perl 5.13.10.
186 Thanks Dave Mitchell for the notice.
187 + Tst : Lengthy tests have been ported to Test::Leaner, making the
188 whole test suite about 50% faster.
190 0.13 2010-12-20 01:00 UTC
191 + Fix : [RT #61904] : Stack corruption when using unwind() under
193 Thanks Sergey Aleynikov for contributing a fix.
194 + Fix : [RT #63378] : Compatibility with perl 5.13.8.
195 Thanks Andreas J. König for bisecting the issue.
196 + Tst : Threads tests are now only run on perl 5.13.4 and higher.
197 They could segfault randomly because of what seems to be an
198 internal bug of Perl, which has been addressed in 5.13.4.
199 There is also an environment variable that allows you to
200 forcefully run those tests, but it should be set only for
201 author testing and not for end users.
203 0.12 2010-05-19 00:45 UTC
204 + Fix : Compatibility with perl 5.13.
205 + Fix : Test failures with perl 5.8.0.
206 + Fix : A minor leak of SVs when a non array/hash was passed to
209 0.11 2010-04-16 23:20 UTC
210 + Chg : It's now forbiddent to pass a reference to a non-glob variable
211 as the localization target of localize(), localize_elem() and
213 + Chg : localize_elem() now only accepts localization of arrays or hashs
214 elements. For other types, it used to be a synonym of localize.
215 + Chg : localize_elem() no longer accepts a glob as the target. You now
216 have to specify the variable as a string. This is because it was
217 impossible in this case to handle meaningfully the array or the
218 hash reference passed as the assigned value.
219 + Doc : The synopsys was revamped, and the rest of the documentation was
221 + Fix : [RT #55593] : Segfault when localizing hash or array element to
222 different package in different file.
223 Thanks Dagfinn Ilmari Mannsåker for reporting.
224 + Fix : [RT #56301] : reap loses eval context when dying naturally.
225 Thanks Andrew Main for reporting.
226 + Fix : Scope inconsistencies and segfaults when saving several
227 localizations into the same target scope.
228 + Fix : Stop skipping frames as a pop optimization. This caused breakage
229 under the debugger (and most likely outside as well).
231 0.10 2010-01-18 23:50 UTC
232 + Fix : Properly handle given/when on 5.10.
233 + Fix : Some stack inconsistencies were fixed, though they were unlikely
234 to have an impact on your real-life code.
235 + Fix : Work around Kwalitee test misfailures.
237 0.09 2009-05-17 20:20 UTC
238 + Add : The new SU_THREADSAFE constant can be used to know whether the
239 module could have been built with thread safety enabled.
240 + Chg : Thread safety is disabled for perl 5.8 on Win32.
241 + Chg : A saner workaround for the "call_sv() during LEAVE clobbers the
242 still used last popped stack element" issue on 5.10.
244 0.08 2009-04-16 22:50 UTC
245 + Fix : [RT #44204] : Stack corruption with reap(). Thanks Torsten
246 Foertsch for reporting.
247 + Fix : Building with Solaris CC.
248 + Tst : unwind() in threads.
250 0.07 2009-02-20 00:20 UTC
251 + Chg : The CLONE method will no longer be defined for non-threaded
253 + Doc : Some examples on how to build the target context from the words.
254 + Fix : Some unlikely possible uninitialized reads, indirectly pointed
255 out in a Redhat review request.
256 + Fix : "localize *x, 'y' => $cxt" now matches Perl's behaviour for
258 + Fix : Miscellanous code cleanups, courtesy of Florian Ragwitz.
259 + Upd : Resources in META.yml.
261 0.06 2009-01-17 00:05 UTC
262 + Chg : INCOMPATIBLE CHANGE: The level is now absolute and no longer
263 relative to the current frame - we'll call it "context" from now
264 on. You should replace all your raw levels by combinations of
266 The old behaviour of "=> $n" can be easily reobtained by using
268 + Fix : As a result of this change, the module now plays nicely with
271 0.05 2009-01-12 18:15 UTC
272 + Fix : Stack mess when using unwind() in scalar context.
273 + Fix : Returning an automatic variable isn't wise, so let's use a
275 + Doc : Clarifications.
276 + Tst : Stress tests for unwind().
278 0.04 2009-01-11 18:40 UTC
279 + Add : unwind(@things, $level), that returns to an upper context.
280 + Add : want_at($level), that gives the wantarray for $level.
281 + Add : Control words, to reliably get the level of the n-th upper
282 subroutine or eval scope. TOPLEVEL was renamed to TOP.
283 + Fix : Tests with 5.6.
284 + Tst : Reordering and factoring some of the stress tests so that they
285 aren't needlessly ran several times.
287 0.03 2009-01-04 15:55 UTC
288 + Add : localize_delete(), that localize array/hash elements in upper
290 + Fix : Segfault when localizing array elements with an invalid negative
293 0.02 2008-12-28 18:40 UTC
294 + Doc : Clarifications and improvements.
295 + Fix : Missing compatibility macros.
296 + Fix : Localized nonexistant array elements should be deleted when
297 their time comes so that the array recovers its original length.
299 0.01 2008-12-26 16:05 UTC
300 First version, released on an unsuspecting world.