1 Revision history for Scope-Upper
3 0.25 2014-09-21 17:10 UTC
4 + Add : Support for the PERL_OP_PARENT optional feature introduced in
6 + Fix : Work around an assertion failure in perl 5.21.4.
8 0.24 2013-09-10 11:10 UTC
9 + Fix : Lexicals returned with unwind(), yield() and leave() will no
10 longer be lost on perl 5.19.4 and above.
12 0.23 2013-09-02 11:30 UTC
13 This is a maintenance release. The code contains no functional change.
14 Satisfied users of version 0.22 can skip this update.
15 + Fix : [RT #87178] : typo fixes.
16 Thanks dsteinbrunner@pobox.com for the patch.
17 + Fix : [RT #88177] : 5.19.3 block hint test breakage
18 t/07-context_info.t has been taught about perl 5.19.3.
19 Thanks Andrew Main for the patch.
20 + Tst : Author tests are no longer bundled with this distribution.
21 They are only made available to authors in the git repository.
22 + Tst : "given is experimental" warnings when running tests on perl
23 5.18 and above have been silenced.
25 0.22 2013-01-30 23:35 UTC
26 + Chg : perl 5.6.1 is required.
27 + Fix : context_info() now ignores %warnings::Bits for perl 5.8.6 and
28 below, just like caller().
29 + Fix : [RT #82220] : Scope-Upper-0.21 test stuck on Windows perl 5.12.3
30 t/93-pod-spelling.t will not crash anymore on perl 5.12 and
32 Thanks Gabor Szabo for reporting and Slaven Rezic for debugging
34 + Tst : Rare test failures of t/07-context_info.t on perl 5.6,
35 t/55-yield-target.t on perl 5.[68], and t/63-uplevel-ctl.t on
36 perl 5.8.[345] have been addressed.
38 0.21 2012-09-21 15:10 UTC
39 + Fix : context_info() has been taught about perl 5.17.4.
40 + Fix : t/07-context_info.t will no longer fail with perls that have
41 sitecustomize enabled (like many perl builds for Windows).
42 Thanks Steve Hay and Nicholas Clark for debugging help.
43 + Fix : Broken linkage on Windows with gcc 3.4, which appears in
44 particular when using ActivePerl's default compiler suite.
45 For those setups, the Scope::Upper shared library will now be
46 linked against the perl dll directly (instead of the import
49 0.20 2012-09-17 11:00 UTC
50 + Add : The new yield(@values, $context) function can be used to return
51 values to any upper scope, including do or map blocks.
52 The new leave(@values) function is an alias for
54 + Add : The new context_info($context) function return information
55 about context $context, similarly to what caller() provides
56 but for any upper scope.
57 + Chg : Contexts are now normalized. In previous versions, it was
58 possible for different contexts to refer to the same scope :
59 for example, "for (my $i = 0; $i < 10; ++$i) { ... }" was
60 reachable through two contexts, while "for (@array) { ... }"
61 only by one. Starting from this version, contexts are
62 normalized so that they always represent an actual scope.
63 + Doc : C++ compilers are officially NOT supported.
64 + Fix : Building with a more recent version of perl 5.17.4.
65 + Fix : Debugger compatibility with perl 5.17.1 and above.
67 0.19 2012-09-01 13:25 UTC
68 + Doc : POD headings have been made linkable.
69 + Fix : Building with perl 5.17.4.
70 + Fix : BUILD_PREREQS are now set for ExtUtils::MakeMaker.
71 + Opt : uplevel() private data structure is 7% smaller on 64 bits
73 + Tst : Author tests overhaul.
75 0.18 2011-10-10 20:50 UTC
76 + Add : The uid() function returns an unique identifier for each dynamic
77 scope. The validate_uid() function can be used to check whether
78 one such identifier is valid (i.e. that the scope it refers to
80 + Chg : It is no longer possible on perl 5.6 to call goto() in an
81 uplevel callback to replace the uplevel call. This change was
82 needed in order to ensure consistency between platforms
83 regarding to the following fix just below.
84 + Fix : The uplevel() tests now pass on Windows.
85 Thanks C.H. Kang for bringing this to my attention.
87 0.17 2011-10-03 21:45 UTC
88 + Fix : uplevel() will now use the correct pad when executing its
89 callback. This fixes at least two issues :
90 - closures defined inside the uplevel callback can now correctly
91 access lexicals from inside and outside the callback.
92 - state variables in the uplevel callback now work properly.
93 + Fix : It is now generally possible to call goto() in the uplevel'd
94 code to replace the uplevel stack frame. There are two cases
95 for which it is still not possible :
96 - if -D flags were set when running perl (as in "perl -Dt ...").
97 - if the perl runloop has been replaced with a custom one by
99 If uplevel() detects that the replacement code contains a goto
100 statement, and is in one of those two cases, then it will refuse
101 to execute the callback and throw an exception.
102 Note that this fix implies a run-time overhead of uplevel()
103 proportional to the size of the the callback in every case
104 (with a small ratio), and proportional to the size of ALL the
105 code executed as the result of the uplevel call (including
106 subroutine calls inside the callback) when a goto statement is
107 found in the uplevel callback.
108 + Fix : uplevel() has been taught how to handle XS callbacks properly.
109 + Fix : The cause of "Attempt to free unreferenced scalar" warnings
110 when using uplevel() has been addressed.
111 + Fix : [RT #71212] : build failure on Windows.
112 The module does no longer rely on calling Perl_cv_clone, which
114 Thanks C.H. Kang for reporting.
116 0.16 2011-09-03 23:00 UTC
117 + Add : uplevel($code, @args, $cxt) executes $code with arguments @args
118 in the upper context pointed by $cxt.
119 This is an XS version of the well-known uplevel() routine from
120 Sub::Uplevel. There are a few differences between both
121 implmentations that are listed in the documentation.
122 The XS version is roughly 10 times faster than the pure-Perl
125 0.15 2011-08-24 14:20 UTC
126 + Fix : Localizing subroutines in an higher scope will now correctly
127 update the method cache.
129 0.14 2011-02-27 00:00 UTC
130 + Fix : [RT #64997] : Compatibility with perl 5.13.10.
131 Thanks Dave Mitchell for the notice.
132 + Tst : Lengthy tests have been ported to Test::Leaner, making the
133 whole test suite about 50% faster.
135 0.13 2010-12-20 01:00 UTC
136 + Fix : [RT #61904] : Stack corruption when using unwind() under
138 Thanks Sergey Aleynikov for contributing a fix.
139 + Fix : [RT #63378] : Compatibility with perl 5.13.8.
140 Thanks Andreas J. König for bisecting the issue.
141 + Tst : Threads tests are now only run on perl 5.13.4 and higher.
142 They could segfault randomly because of what seems to be an
143 internal bug of Perl, which has been addressed in 5.13.4.
144 There is also an environment variable that allows you to
145 forcefully run those tests, but it should be set only for
146 author testing and not for end users.
148 0.12 2010-05-19 00:45 UTC
149 + Fix : Compatibility with perl 5.13.
150 + Fix : Test failures with perl 5.8.0.
151 + Fix : A minor leak of SVs when a non array/hash was passed to
154 0.11 2010-04-16 23:20 UTC
155 + Chg : It's now forbiddent to pass a reference to a non-glob variable
156 as the localization target of localize(), localize_elem() and
158 + Chg : localize_elem() now only accepts localization of arrays or hashs
159 elements. For other types, it used to be a synonym of localize.
160 + Chg : localize_elem() no longer accepts a glob as the target. You now
161 have to specify the variable as a string. This is because it was
162 impossible in this case to handle meaningfully the array or the
163 hash reference passed as the assigned value.
164 + Doc : The synopsys was revamped, and the rest of the documentation was
166 + Fix : [RT #55593] : Segfault when localizing hash or array element to
167 different package in different file.
168 Thanks Dagfinn Ilmari Mannsåker for reporting.
169 + Fix : [RT #56301] : reap loses eval context when dying naturally.
170 Thanks Andrew Main for reporting.
171 + Fix : Scope inconsistencies and segfaults when saving several
172 localizations into the same target scope.
173 + Fix : Stop skipping frames as a pop optimization. This caused breakage
174 under the debugger (and most likely outside as well).
176 0.10 2010-01-18 23:50 UTC
177 + Fix : Properly handle given/when on 5.10.
178 + Fix : Some stack inconsistencies were fixed, though they were unlikely
179 to have an impact on your real-life code.
180 + Fix : Work around Kwalitee test misfailures.
182 0.09 2009-05-17 20:20 UTC
183 + Add : The new SU_THREADSAFE constant can be used to know whether the
184 module could have been built with thread safety enabled.
185 + Chg : Thread safety is disabled for perl 5.8 on Win32.
186 + Chg : A saner workaround for the "call_sv() during LEAVE clobbers the
187 still used last popped stack element" issue on 5.10.
189 0.08 2009-04-16 22:50 UTC
190 + Fix : [RT #44204] : Stack corruption with reap(). Thanks Torsten
191 Foertsch for reporting.
192 + Fix : Building with Solaris CC.
193 + Tst : unwind() in threads.
195 0.07 2009-02-20 00:20 UTC
196 + Chg : The CLONE method will no longer be defined for non-threaded
198 + Doc : Some examples on how to build the target context from the words.
199 + Fix : Some unlikely possible uninitialized reads, indirectly pointed
200 out in a Redhat review request.
201 + Fix : "localize *x, 'y' => $cxt" now matches Perl's behaviour for
203 + Fix : Miscellanous code cleanups, courtesy of Florian Ragwitz.
204 + Upd : Resources in META.yml.
206 0.06 2009-01-17 00:05 UTC
207 + Chg : INCOMPATIBLE CHANGE: The level is now absolute and no longer
208 relative to the current frame - we'll call it "context" from now
209 on. You should replace all your raw levels by combinations of
211 The old behaviour of "=> $n" can be easily reobtained by using
213 + Fix : As a result of this change, the module now plays nicely with
216 0.05 2009-01-12 18:15 UTC
217 + Fix : Stack mess when using unwind() in scalar context.
218 + Fix : Returning an automatic variable isn't wise, so let's use a
220 + Doc : Clarifications.
221 + Tst : Stress tests for unwind().
223 0.04 2009-01-11 18:40 UTC
224 + Add : unwind(@things, $level), that returns to an upper context.
225 + Add : want_at($level), that gives the wantarray for $level.
226 + Add : Control words, to reliably get the level of the n-th upper
227 subroutine or eval scope. TOPLEVEL was renamed to TOP.
228 + Fix : Tests with 5.6.
229 + Tst : Reordering and factoring some of the stress tests so that they
230 aren't needlessly ran several times.
232 0.03 2009-01-04 15:55 UTC
233 + Add : localize_delete(), that localize array/hash elements in upper
235 + Fix : Segfault when localizing array elements with an invalid negative
238 0.02 2008-12-28 18:40 UTC
239 + Doc : Clarifications and improvements.
240 + Fix : Missing compatibility macros.
241 + Fix : Localized nonexistant array elements should be deleted when
242 their time comes so that the array recovers its original length.
244 0.01 2008-12-26 16:05 UTC
245 First version, released on an unsuspecting world.