1 Revision history for Scope-Upper
3 0.28 2015-08-18 15:00 UTC
4 + Chg : SUB() and EVAL() will now warn if they cannot find an
5 appropriate context in the current stack. They will still
6 return undef in this case, which is interpreted as the current
7 context when combined with other words.
8 + Fix : [RT #104751] : Scope::Upper does not handle exotic stack types
9 Trying to target a scope above the current perl scope will now
10 result in a warning. In that case, the topmost context in the
11 current stack will still be returned.
12 Thanks Rafaël Garcia-Suarez for the report.
13 + Fix : Test failures of threads tests on systems with harsh resource
14 constraints causing the threads to exit() during run.
15 + Opt : Some internal structures were shrunk, resulting in memory
16 savings and small speedups.
18 0.27 2015-03-27 22:10 UTC
19 + Chg : The new environment variable to enable thread tests on older
20 perls is PERL_FORCE_TEST_THREADS. Note that this variable
21 should only be turned on by authors.
22 + Fix : Segfaults when the module is loaded by several threads (or
23 Windows emulated processes) ran in parallel.
24 + Fix : Memory leak with the uid() feature.
25 + Fix : Update the Windows ActivePerl + gcc 3.4 workaround for
26 ExtUtils::MakeMaker 7.04. Thanks Christian Walde for reporting
27 and feedback on this issue.
28 + Fix : reap(), localize(), localize_elem() and localize_delete()
29 will again work correctly on perl 5.19.4+ when the debugger
31 + Fix : Silence some compiler warnings.
33 0.26 2015-03-12 23:30 UTC
34 + Fix : [RT #100264] : Don't use CvPADLIST on XSUBs
35 Thanks Father Chrysostomos for reporting and contributing a
37 + Fix : Be really compatible with the optional OP_PARENT feature.
39 0.25 2014-09-21 17:10 UTC
40 + Add : Support for the PERL_OP_PARENT optional feature introduced in
42 + Fix : Work around an assertion failure in perl 5.21.4.
44 0.24 2013-09-10 11:10 UTC
45 + Fix : Lexicals returned with unwind(), yield() and leave() will no
46 longer be lost on perl 5.19.4 and above.
48 0.23 2013-09-02 11:30 UTC
49 This is a maintenance release. The code contains no functional change.
50 Satisfied users of version 0.22 can skip this update.
51 + Fix : [RT #87178] : typo fixes.
52 Thanks dsteinbrunner@pobox.com for the patch.
53 + Fix : [RT #88177] : 5.19.3 block hint test breakage
54 t/07-context_info.t has been taught about perl 5.19.3.
55 Thanks Andrew Main for the patch.
56 + Tst : Author tests are no longer bundled with this distribution.
57 They are only made available to authors in the git repository.
58 + Tst : "given is experimental" warnings when running tests on perl
59 5.18 and above have been silenced.
61 0.22 2013-01-30 23:35 UTC
62 + Chg : perl 5.6.1 is required.
63 + Fix : context_info() now ignores %warnings::Bits for perl 5.8.6 and
64 below, just like caller().
65 + Fix : [RT #82220] : Scope-Upper-0.21 test stuck on Windows perl 5.12.3
66 t/93-pod-spelling.t will not crash anymore on perl 5.12 and
68 Thanks Gabor Szabo for reporting and Slaven Rezic for debugging
70 + Tst : Rare test failures of t/07-context_info.t on perl 5.6,
71 t/55-yield-target.t on perl 5.[68], and t/63-uplevel-ctl.t on
72 perl 5.8.[345] have been addressed.
74 0.21 2012-09-21 15:10 UTC
75 + Fix : context_info() has been taught about perl 5.17.4.
76 + Fix : t/07-context_info.t will no longer fail with perls that have
77 sitecustomize enabled (like many perl builds for Windows).
78 Thanks Steve Hay and Nicholas Clark for debugging help.
79 + Fix : Broken linkage on Windows with gcc 3.4, which appears in
80 particular when using ActivePerl's default compiler suite.
81 For those setups, the Scope::Upper shared library will now be
82 linked against the perl dll directly (instead of the import
85 0.20 2012-09-17 11:00 UTC
86 + Add : The new yield(@values, $context) function can be used to return
87 values to any upper scope, including do or map blocks.
88 The new leave(@values) function is an alias for
90 + Add : The new context_info($context) function return information
91 about context $context, similarly to what caller() provides
92 but for any upper scope.
93 + Chg : Contexts are now normalized. In previous versions, it was
94 possible for different contexts to refer to the same scope :
95 for example, "for (my $i = 0; $i < 10; ++$i) { ... }" was
96 reachable through two contexts, while "for (@array) { ... }"
97 only by one. Starting from this version, contexts are
98 normalized so that they always represent an actual scope.
99 + Doc : C++ compilers are officially NOT supported.
100 + Fix : Building with a more recent version of perl 5.17.4.
101 + Fix : Debugger compatibility with perl 5.17.1 and above.
103 0.19 2012-09-01 13:25 UTC
104 + Doc : POD headings have been made linkable.
105 + Fix : Building with perl 5.17.4.
106 + Fix : BUILD_PREREQS are now set for ExtUtils::MakeMaker.
107 + Opt : uplevel() private data structure is 7% smaller on 64 bits
109 + Tst : Author tests overhaul.
111 0.18 2011-10-10 20:50 UTC
112 + Add : The uid() function returns an unique identifier for each dynamic
113 scope. The validate_uid() function can be used to check whether
114 one such identifier is valid (i.e. that the scope it refers to
116 + Chg : It is no longer possible on perl 5.6 to call goto() in an
117 uplevel callback to replace the uplevel call. This change was
118 needed in order to ensure consistency between platforms
119 regarding to the following fix just below.
120 + Fix : The uplevel() tests now pass on Windows.
121 Thanks C.H. Kang for bringing this to my attention.
123 0.17 2011-10-03 21:45 UTC
124 + Fix : uplevel() will now use the correct pad when executing its
125 callback. This fixes at least two issues :
126 - closures defined inside the uplevel callback can now correctly
127 access lexicals from inside and outside the callback.
128 - state variables in the uplevel callback now work properly.
129 + Fix : It is now generally possible to call goto() in the uplevel'd
130 code to replace the uplevel stack frame. There are two cases
131 for which it is still not possible :
132 - if -D flags were set when running perl (as in "perl -Dt ...").
133 - if the perl runloop has been replaced with a custom one by
135 If uplevel() detects that the replacement code contains a goto
136 statement, and is in one of those two cases, then it will refuse
137 to execute the callback and throw an exception.
138 Note that this fix implies a run-time overhead of uplevel()
139 proportional to the size of the the callback in every case
140 (with a small ratio), and proportional to the size of ALL the
141 code executed as the result of the uplevel call (including
142 subroutine calls inside the callback) when a goto statement is
143 found in the uplevel callback.
144 + Fix : uplevel() has been taught how to handle XS callbacks properly.
145 + Fix : The cause of "Attempt to free unreferenced scalar" warnings
146 when using uplevel() has been addressed.
147 + Fix : [RT #71212] : build failure on Windows.
148 The module does no longer rely on calling Perl_cv_clone, which
150 Thanks C.H. Kang for reporting.
152 0.16 2011-09-03 23:00 UTC
153 + Add : uplevel($code, @args, $cxt) executes $code with arguments @args
154 in the upper context pointed by $cxt.
155 This is an XS version of the well-known uplevel() routine from
156 Sub::Uplevel. There are a few differences between both
157 implmentations that are listed in the documentation.
158 The XS version is roughly 10 times faster than the pure-Perl
161 0.15 2011-08-24 14:20 UTC
162 + Fix : Localizing subroutines in an higher scope will now correctly
163 update the method cache.
165 0.14 2011-02-27 00:00 UTC
166 + Fix : [RT #64997] : Compatibility with perl 5.13.10.
167 Thanks Dave Mitchell for the notice.
168 + Tst : Lengthy tests have been ported to Test::Leaner, making the
169 whole test suite about 50% faster.
171 0.13 2010-12-20 01:00 UTC
172 + Fix : [RT #61904] : Stack corruption when using unwind() under
174 Thanks Sergey Aleynikov for contributing a fix.
175 + Fix : [RT #63378] : Compatibility with perl 5.13.8.
176 Thanks Andreas J. König for bisecting the issue.
177 + Tst : Threads tests are now only run on perl 5.13.4 and higher.
178 They could segfault randomly because of what seems to be an
179 internal bug of Perl, which has been addressed in 5.13.4.
180 There is also an environment variable that allows you to
181 forcefully run those tests, but it should be set only for
182 author testing and not for end users.
184 0.12 2010-05-19 00:45 UTC
185 + Fix : Compatibility with perl 5.13.
186 + Fix : Test failures with perl 5.8.0.
187 + Fix : A minor leak of SVs when a non array/hash was passed to
190 0.11 2010-04-16 23:20 UTC
191 + Chg : It's now forbiddent to pass a reference to a non-glob variable
192 as the localization target of localize(), localize_elem() and
194 + Chg : localize_elem() now only accepts localization of arrays or hashs
195 elements. For other types, it used to be a synonym of localize.
196 + Chg : localize_elem() no longer accepts a glob as the target. You now
197 have to specify the variable as a string. This is because it was
198 impossible in this case to handle meaningfully the array or the
199 hash reference passed as the assigned value.
200 + Doc : The synopsys was revamped, and the rest of the documentation was
202 + Fix : [RT #55593] : Segfault when localizing hash or array element to
203 different package in different file.
204 Thanks Dagfinn Ilmari Mannsåker for reporting.
205 + Fix : [RT #56301] : reap loses eval context when dying naturally.
206 Thanks Andrew Main for reporting.
207 + Fix : Scope inconsistencies and segfaults when saving several
208 localizations into the same target scope.
209 + Fix : Stop skipping frames as a pop optimization. This caused breakage
210 under the debugger (and most likely outside as well).
212 0.10 2010-01-18 23:50 UTC
213 + Fix : Properly handle given/when on 5.10.
214 + Fix : Some stack inconsistencies were fixed, though they were unlikely
215 to have an impact on your real-life code.
216 + Fix : Work around Kwalitee test misfailures.
218 0.09 2009-05-17 20:20 UTC
219 + Add : The new SU_THREADSAFE constant can be used to know whether the
220 module could have been built with thread safety enabled.
221 + Chg : Thread safety is disabled for perl 5.8 on Win32.
222 + Chg : A saner workaround for the "call_sv() during LEAVE clobbers the
223 still used last popped stack element" issue on 5.10.
225 0.08 2009-04-16 22:50 UTC
226 + Fix : [RT #44204] : Stack corruption with reap(). Thanks Torsten
227 Foertsch for reporting.
228 + Fix : Building with Solaris CC.
229 + Tst : unwind() in threads.
231 0.07 2009-02-20 00:20 UTC
232 + Chg : The CLONE method will no longer be defined for non-threaded
234 + Doc : Some examples on how to build the target context from the words.
235 + Fix : Some unlikely possible uninitialized reads, indirectly pointed
236 out in a Redhat review request.
237 + Fix : "localize *x, 'y' => $cxt" now matches Perl's behaviour for
239 + Fix : Miscellanous code cleanups, courtesy of Florian Ragwitz.
240 + Upd : Resources in META.yml.
242 0.06 2009-01-17 00:05 UTC
243 + Chg : INCOMPATIBLE CHANGE: The level is now absolute and no longer
244 relative to the current frame - we'll call it "context" from now
245 on. You should replace all your raw levels by combinations of
247 The old behaviour of "=> $n" can be easily reobtained by using
249 + Fix : As a result of this change, the module now plays nicely with
252 0.05 2009-01-12 18:15 UTC
253 + Fix : Stack mess when using unwind() in scalar context.
254 + Fix : Returning an automatic variable isn't wise, so let's use a
256 + Doc : Clarifications.
257 + Tst : Stress tests for unwind().
259 0.04 2009-01-11 18:40 UTC
260 + Add : unwind(@things, $level), that returns to an upper context.
261 + Add : want_at($level), that gives the wantarray for $level.
262 + Add : Control words, to reliably get the level of the n-th upper
263 subroutine or eval scope. TOPLEVEL was renamed to TOP.
264 + Fix : Tests with 5.6.
265 + Tst : Reordering and factoring some of the stress tests so that they
266 aren't needlessly ran several times.
268 0.03 2009-01-04 15:55 UTC
269 + Add : localize_delete(), that localize array/hash elements in upper
271 + Fix : Segfault when localizing array elements with an invalid negative
274 0.02 2008-12-28 18:40 UTC
275 + Doc : Clarifications and improvements.
276 + Fix : Missing compatibility macros.
277 + Fix : Localized nonexistant array elements should be deleted when
278 their time comes so that the array recovers its original length.
280 0.01 2008-12-26 16:05 UTC
281 First version, released on an unsuspecting world.