1 Revision history for Scope-Upper
3 0.27 2015-03-27 22:10 UTC
4 + Chg : The new environment variable to enable thread tests on older
5 perls is PERL_FORCE_TEST_THREADS. Note that this variable
6 should only be turned on by authors.
7 + Fix : Segfaults when the module is loaded by several threads (or
8 Windows emulated processes) ran in parallel.
9 + Fix : Memory leak with the uid() feature.
10 + Fix : Update the Windows ActivePerl + gcc 3.4 workaround for
11 ExtUtils::MakeMaker 7.04. Thanks Christian Walde for reporting
12 and feedback on this issue.
13 + Fix : reap(), localize(), localize_elem() and localize_delete()
14 will again work correctly on perl 5.19.4+ when the debugger
16 + Fix : Silence some compiler warnings.
18 0.26 2015-03-12 23:30 UTC
19 + Fix : [RT #100264] : Don't use CvPADLIST on XSUBs
20 Thanks Father Chrysostomos for reporting and contributing a
22 + Fix : Be really compatible with the optional OP_PARENT feature.
24 0.25 2014-09-21 17:10 UTC
25 + Add : Support for the PERL_OP_PARENT optional feature introduced in
27 + Fix : Work around an assertion failure in perl 5.21.4.
29 0.24 2013-09-10 11:10 UTC
30 + Fix : Lexicals returned with unwind(), yield() and leave() will no
31 longer be lost on perl 5.19.4 and above.
33 0.23 2013-09-02 11:30 UTC
34 This is a maintenance release. The code contains no functional change.
35 Satisfied users of version 0.22 can skip this update.
36 + Fix : [RT #87178] : typo fixes.
37 Thanks dsteinbrunner@pobox.com for the patch.
38 + Fix : [RT #88177] : 5.19.3 block hint test breakage
39 t/07-context_info.t has been taught about perl 5.19.3.
40 Thanks Andrew Main for the patch.
41 + Tst : Author tests are no longer bundled with this distribution.
42 They are only made available to authors in the git repository.
43 + Tst : "given is experimental" warnings when running tests on perl
44 5.18 and above have been silenced.
46 0.22 2013-01-30 23:35 UTC
47 + Chg : perl 5.6.1 is required.
48 + Fix : context_info() now ignores %warnings::Bits for perl 5.8.6 and
49 below, just like caller().
50 + Fix : [RT #82220] : Scope-Upper-0.21 test stuck on Windows perl 5.12.3
51 t/93-pod-spelling.t will not crash anymore on perl 5.12 and
53 Thanks Gabor Szabo for reporting and Slaven Rezic for debugging
55 + Tst : Rare test failures of t/07-context_info.t on perl 5.6,
56 t/55-yield-target.t on perl 5.[68], and t/63-uplevel-ctl.t on
57 perl 5.8.[345] have been addressed.
59 0.21 2012-09-21 15:10 UTC
60 + Fix : context_info() has been taught about perl 5.17.4.
61 + Fix : t/07-context_info.t will no longer fail with perls that have
62 sitecustomize enabled (like many perl builds for Windows).
63 Thanks Steve Hay and Nicholas Clark for debugging help.
64 + Fix : Broken linkage on Windows with gcc 3.4, which appears in
65 particular when using ActivePerl's default compiler suite.
66 For those setups, the Scope::Upper shared library will now be
67 linked against the perl dll directly (instead of the import
70 0.20 2012-09-17 11:00 UTC
71 + Add : The new yield(@values, $context) function can be used to return
72 values to any upper scope, including do or map blocks.
73 The new leave(@values) function is an alias for
75 + Add : The new context_info($context) function return information
76 about context $context, similarly to what caller() provides
77 but for any upper scope.
78 + Chg : Contexts are now normalized. In previous versions, it was
79 possible for different contexts to refer to the same scope :
80 for example, "for (my $i = 0; $i < 10; ++$i) { ... }" was
81 reachable through two contexts, while "for (@array) { ... }"
82 only by one. Starting from this version, contexts are
83 normalized so that they always represent an actual scope.
84 + Doc : C++ compilers are officially NOT supported.
85 + Fix : Building with a more recent version of perl 5.17.4.
86 + Fix : Debugger compatibility with perl 5.17.1 and above.
88 0.19 2012-09-01 13:25 UTC
89 + Doc : POD headings have been made linkable.
90 + Fix : Building with perl 5.17.4.
91 + Fix : BUILD_PREREQS are now set for ExtUtils::MakeMaker.
92 + Opt : uplevel() private data structure is 7% smaller on 64 bits
94 + Tst : Author tests overhaul.
96 0.18 2011-10-10 20:50 UTC
97 + Add : The uid() function returns an unique identifier for each dynamic
98 scope. The validate_uid() function can be used to check whether
99 one such identifier is valid (i.e. that the scope it refers to
101 + Chg : It is no longer possible on perl 5.6 to call goto() in an
102 uplevel callback to replace the uplevel call. This change was
103 needed in order to ensure consistency between platforms
104 regarding to the following fix just below.
105 + Fix : The uplevel() tests now pass on Windows.
106 Thanks C.H. Kang for bringing this to my attention.
108 0.17 2011-10-03 21:45 UTC
109 + Fix : uplevel() will now use the correct pad when executing its
110 callback. This fixes at least two issues :
111 - closures defined inside the uplevel callback can now correctly
112 access lexicals from inside and outside the callback.
113 - state variables in the uplevel callback now work properly.
114 + Fix : It is now generally possible to call goto() in the uplevel'd
115 code to replace the uplevel stack frame. There are two cases
116 for which it is still not possible :
117 - if -D flags were set when running perl (as in "perl -Dt ...").
118 - if the perl runloop has been replaced with a custom one by
120 If uplevel() detects that the replacement code contains a goto
121 statement, and is in one of those two cases, then it will refuse
122 to execute the callback and throw an exception.
123 Note that this fix implies a run-time overhead of uplevel()
124 proportional to the size of the the callback in every case
125 (with a small ratio), and proportional to the size of ALL the
126 code executed as the result of the uplevel call (including
127 subroutine calls inside the callback) when a goto statement is
128 found in the uplevel callback.
129 + Fix : uplevel() has been taught how to handle XS callbacks properly.
130 + Fix : The cause of "Attempt to free unreferenced scalar" warnings
131 when using uplevel() has been addressed.
132 + Fix : [RT #71212] : build failure on Windows.
133 The module does no longer rely on calling Perl_cv_clone, which
135 Thanks C.H. Kang for reporting.
137 0.16 2011-09-03 23:00 UTC
138 + Add : uplevel($code, @args, $cxt) executes $code with arguments @args
139 in the upper context pointed by $cxt.
140 This is an XS version of the well-known uplevel() routine from
141 Sub::Uplevel. There are a few differences between both
142 implmentations that are listed in the documentation.
143 The XS version is roughly 10 times faster than the pure-Perl
146 0.15 2011-08-24 14:20 UTC
147 + Fix : Localizing subroutines in an higher scope will now correctly
148 update the method cache.
150 0.14 2011-02-27 00:00 UTC
151 + Fix : [RT #64997] : Compatibility with perl 5.13.10.
152 Thanks Dave Mitchell for the notice.
153 + Tst : Lengthy tests have been ported to Test::Leaner, making the
154 whole test suite about 50% faster.
156 0.13 2010-12-20 01:00 UTC
157 + Fix : [RT #61904] : Stack corruption when using unwind() under
159 Thanks Sergey Aleynikov for contributing a fix.
160 + Fix : [RT #63378] : Compatibility with perl 5.13.8.
161 Thanks Andreas J. König for bisecting the issue.
162 + Tst : Threads tests are now only run on perl 5.13.4 and higher.
163 They could segfault randomly because of what seems to be an
164 internal bug of Perl, which has been addressed in 5.13.4.
165 There is also an environment variable that allows you to
166 forcefully run those tests, but it should be set only for
167 author testing and not for end users.
169 0.12 2010-05-19 00:45 UTC
170 + Fix : Compatibility with perl 5.13.
171 + Fix : Test failures with perl 5.8.0.
172 + Fix : A minor leak of SVs when a non array/hash was passed to
175 0.11 2010-04-16 23:20 UTC
176 + Chg : It's now forbiddent to pass a reference to a non-glob variable
177 as the localization target of localize(), localize_elem() and
179 + Chg : localize_elem() now only accepts localization of arrays or hashs
180 elements. For other types, it used to be a synonym of localize.
181 + Chg : localize_elem() no longer accepts a glob as the target. You now
182 have to specify the variable as a string. This is because it was
183 impossible in this case to handle meaningfully the array or the
184 hash reference passed as the assigned value.
185 + Doc : The synopsys was revamped, and the rest of the documentation was
187 + Fix : [RT #55593] : Segfault when localizing hash or array element to
188 different package in different file.
189 Thanks Dagfinn Ilmari Mannsåker for reporting.
190 + Fix : [RT #56301] : reap loses eval context when dying naturally.
191 Thanks Andrew Main for reporting.
192 + Fix : Scope inconsistencies and segfaults when saving several
193 localizations into the same target scope.
194 + Fix : Stop skipping frames as a pop optimization. This caused breakage
195 under the debugger (and most likely outside as well).
197 0.10 2010-01-18 23:50 UTC
198 + Fix : Properly handle given/when on 5.10.
199 + Fix : Some stack inconsistencies were fixed, though they were unlikely
200 to have an impact on your real-life code.
201 + Fix : Work around Kwalitee test misfailures.
203 0.09 2009-05-17 20:20 UTC
204 + Add : The new SU_THREADSAFE constant can be used to know whether the
205 module could have been built with thread safety enabled.
206 + Chg : Thread safety is disabled for perl 5.8 on Win32.
207 + Chg : A saner workaround for the "call_sv() during LEAVE clobbers the
208 still used last popped stack element" issue on 5.10.
210 0.08 2009-04-16 22:50 UTC
211 + Fix : [RT #44204] : Stack corruption with reap(). Thanks Torsten
212 Foertsch for reporting.
213 + Fix : Building with Solaris CC.
214 + Tst : unwind() in threads.
216 0.07 2009-02-20 00:20 UTC
217 + Chg : The CLONE method will no longer be defined for non-threaded
219 + Doc : Some examples on how to build the target context from the words.
220 + Fix : Some unlikely possible uninitialized reads, indirectly pointed
221 out in a Redhat review request.
222 + Fix : "localize *x, 'y' => $cxt" now matches Perl's behaviour for
224 + Fix : Miscellanous code cleanups, courtesy of Florian Ragwitz.
225 + Upd : Resources in META.yml.
227 0.06 2009-01-17 00:05 UTC
228 + Chg : INCOMPATIBLE CHANGE: The level is now absolute and no longer
229 relative to the current frame - we'll call it "context" from now
230 on. You should replace all your raw levels by combinations of
232 The old behaviour of "=> $n" can be easily reobtained by using
234 + Fix : As a result of this change, the module now plays nicely with
237 0.05 2009-01-12 18:15 UTC
238 + Fix : Stack mess when using unwind() in scalar context.
239 + Fix : Returning an automatic variable isn't wise, so let's use a
241 + Doc : Clarifications.
242 + Tst : Stress tests for unwind().
244 0.04 2009-01-11 18:40 UTC
245 + Add : unwind(@things, $level), that returns to an upper context.
246 + Add : want_at($level), that gives the wantarray for $level.
247 + Add : Control words, to reliably get the level of the n-th upper
248 subroutine or eval scope. TOPLEVEL was renamed to TOP.
249 + Fix : Tests with 5.6.
250 + Tst : Reordering and factoring some of the stress tests so that they
251 aren't needlessly ran several times.
253 0.03 2009-01-04 15:55 UTC
254 + Add : localize_delete(), that localize array/hash elements in upper
256 + Fix : Segfault when localizing array elements with an invalid negative
259 0.02 2008-12-28 18:40 UTC
260 + Doc : Clarifications and improvements.
261 + Fix : Missing compatibility macros.
262 + Fix : Localized nonexistant array elements should be deleted when
263 their time comes so that the array recovers its original length.
265 0.01 2008-12-26 16:05 UTC
266 First version, released on an unsuspecting world.