1 Revision history for Scope-Upper
3 0.23 2013-09-02 11:30 UTC
4 This is a maintenance release. The code contains no functional change.
5 Satisfied users of version 0.22 can skip this update.
6 + Fix : [RT #87178] : typo fixes.
7 Thanks dsteinbrunner@pobox.com for the patch.
8 + Fix : [RT #88177] : 5.19.3 block hint test breakage
9 t/07-context_info.t has been taught about perl 5.19.3.
10 Thanks Andrew Main for the patch.
11 + Tst : Author tests are no longer bundled with this distribution.
12 They are only made available to authors in the git repository.
13 + Tst : "given is experimental" warnings when running tests on perl
14 5.18 and above have been silenced.
16 0.22 2013-01-30 23:35 UTC
17 + Chg : perl 5.6.1 is required.
18 + Fix : context_info() now ignores %warnings::Bits for perl 5.8.6 and
19 below, just like caller().
20 + Fix : [RT #82220] : Scope-Upper-0.21 test stuck on Windows perl 5.12.3
21 t/93-pod-spelling.t will not crash anymore on perl 5.12 and
23 Thanks Gabor Szabo for reporting and Slaven Rezic for debugging
25 + Tst : Rare test failures of t/07-context_info.t on perl 5.6,
26 t/55-yield-target.t on perl 5.[68], and t/63-uplevel-ctl.t on
27 perl 5.8.[345] have been addressed.
29 0.21 2012-09-21 15:10 UTC
30 + Fix : context_info() has been taught about perl 5.17.4.
31 + Fix : t/07-context_info.t will no longer fail with perls that have
32 sitecustomize enabled (like many perl builds for Windows).
33 Thanks Steve Hay and Nicholas Clark for debugging help.
34 + Fix : Broken linkage on Windows with gcc 3.4, which appears in
35 particular when using ActivePerl's default compiler suite.
36 For those setups, the Scope::Upper shared library will now be
37 linked against the perl dll directly (instead of the import
40 0.20 2012-09-17 11:00 UTC
41 + Add : The new yield(@values, $context) function can be used to return
42 values to any upper scope, including do or map blocks.
43 The new leave(@values) function is an alias for
45 + Add : The new context_info($context) function return information
46 about context $context, similarly to what caller() provides
47 but for any upper scope.
48 + Chg : Contexts are now normalized. In previous versions, it was
49 possible for different contexts to refer to the same scope :
50 for example, "for (my $i = 0; $i < 10; ++$i) { ... }" was
51 reachable through two contexts, while "for (@array) { ... }"
52 only by one. Starting from this version, contexts are
53 normalized so that they always represent an actual scope.
54 + Doc : C++ compilers are officially NOT supported.
55 + Fix : Building with a more recent version of perl 5.17.4.
56 + Fix : Debugger compatibility with perl 5.17.1 and above.
58 0.19 2012-09-01 13:25 UTC
59 + Doc : POD headings have been made linkable.
60 + Fix : Building with perl 5.17.4.
61 + Fix : BUILD_PREREQS are now set for ExtUtils::MakeMaker.
62 + Opt : uplevel() private data structure is 7% smaller on 64 bits
64 + Tst : Author tests overhaul.
66 0.18 2011-10-10 20:50 UTC
67 + Add : The uid() function returns an unique identifier for each dynamic
68 scope. The validate_uid() function can be used to check whether
69 one such identifier is valid (i.e. that the scope it refers to
71 + Chg : It is no longer possible on perl 5.6 to call goto() in an
72 uplevel callback to replace the uplevel call. This change was
73 needed in order to ensure consistency between platforms
74 regarding to the following fix just below.
75 + Fix : The uplevel() tests now pass on Windows.
76 Thanks C.H. Kang for bringing this to my attention.
78 0.17 2011-10-03 21:45 UTC
79 + Fix : uplevel() will now use the correct pad when executing its
80 callback. This fixes at least two issues :
81 - closures defined inside the uplevel callback can now correctly
82 access lexicals from inside and outside the callback.
83 - state variables in the uplevel callback now work properly.
84 + Fix : It is now generally possible to call goto() in the uplevel'd
85 code to replace the uplevel stack frame. There are two cases
86 for which it is still not possible :
87 - if -D flags were set when running perl (as in "perl -Dt ...").
88 - if the perl runloop has been replaced with a custom one by
90 If uplevel() detects that the replacement code contains a goto
91 statement, and is in one of those two cases, then it will refuse
92 to execute the callback and throw an exception.
93 Note that this fix implies a run-time overhead of uplevel()
94 proportional to the size of the the callback in every case
95 (with a small ratio), and proportional to the size of ALL the
96 code executed as the result of the uplevel call (including
97 subroutine calls inside the callback) when a goto statement is
98 found in the uplevel callback.
99 + Fix : uplevel() has been taught how to handle XS callbacks properly.
100 + Fix : The cause of "Attempt to free unreferenced scalar" warnings
101 when using uplevel() has been addressed.
102 + Fix : [RT #71212] : build failure on Windows.
103 The module does no longer rely on calling Perl_cv_clone, which
105 Thanks C.H. Kang for reporting.
107 0.16 2011-09-03 23:00 UTC
108 + Add : uplevel($code, @args, $cxt) executes $code with arguments @args
109 in the upper context pointed by $cxt.
110 This is an XS version of the well-known uplevel() routine from
111 Sub::Uplevel. There are a few differences between both
112 implmentations that are listed in the documentation.
113 The XS version is roughly 10 times faster than the pure-Perl
116 0.15 2011-08-24 14:20 UTC
117 + Fix : Localizing subroutines in an higher scope will now correctly
118 update the method cache.
120 0.14 2011-02-27 00:00 UTC
121 + Fix : [RT #64997] : Compatibility with perl 5.13.10.
122 Thanks Dave Mitchell for the notice.
123 + Tst : Lengthy tests have been ported to Test::Leaner, making the
124 whole test suite about 50% faster.
126 0.13 2010-12-20 01:00 UTC
127 + Fix : [RT #61904] : Stack corruption when using unwind() under
129 Thanks Sergey Aleynikov for contributing a fix.
130 + Fix : [RT #63378] : Compatibility with perl 5.13.8.
131 Thanks Andreas J. König for bisecting the issue.
132 + Tst : Threads tests are now only run on perl 5.13.4 and higher.
133 They could segfault randomly because of what seems to be an
134 internal bug of Perl, which has been addressed in 5.13.4.
135 There is also an environment variable that allows you to
136 forcefully run those tests, but it should be set only for
137 author testing and not for end users.
139 0.12 2010-05-19 00:45 UTC
140 + Fix : Compatibility with perl 5.13.
141 + Fix : Test failures with perl 5.8.0.
142 + Fix : A minor leak of SVs when a non array/hash was passed to
145 0.11 2010-04-16 23:20 UTC
146 + Chg : It's now forbiddent to pass a reference to a non-glob variable
147 as the localization target of localize(), localize_elem() and
149 + Chg : localize_elem() now only accepts localization of arrays or hashs
150 elements. For other types, it used to be a synonym of localize.
151 + Chg : localize_elem() no longer accepts a glob as the target. You now
152 have to specify the variable as a string. This is because it was
153 impossible in this case to handle meaningfully the array or the
154 hash reference passed as the assigned value.
155 + Doc : The synopsys was revamped, and the rest of the documentation was
157 + Fix : [RT #55593] : Segfault when localizing hash or array element to
158 different package in different file.
159 Thanks Dagfinn Ilmari Mannsåker for reporting.
160 + Fix : [RT #56301] : reap loses eval context when dying naturally.
161 Thanks Andrew Main for reporting.
162 + Fix : Scope inconsistencies and segfaults when saving several
163 localizations into the same target scope.
164 + Fix : Stop skipping frames as a pop optimization. This caused breakage
165 under the debugger (and most likely outside as well).
167 0.10 2010-01-18 23:50 UTC
168 + Fix : Properly handle given/when on 5.10.
169 + Fix : Some stack inconsistencies were fixed, though they were unlikely
170 to have an impact on your real-life code.
171 + Fix : Work around Kwalitee test misfailures.
173 0.09 2009-05-17 20:20 UTC
174 + Add : The new SU_THREADSAFE constant can be used to know whether the
175 module could have been built with thread safety enabled.
176 + Chg : Thread safety is disabled for perl 5.8 on Win32.
177 + Chg : A saner workaround for the "call_sv() during LEAVE clobbers the
178 still used last popped stack element" issue on 5.10.
180 0.08 2009-04-16 22:50 UTC
181 + Fix : [RT #44204] : Stack corruption with reap(). Thanks Torsten
182 Foertsch for reporting.
183 + Fix : Building with Solaris CC.
184 + Tst : unwind() in threads.
186 0.07 2009-02-20 00:20 UTC
187 + Chg : The CLONE method will no longer be defined for non-threaded
189 + Doc : Some examples on how to build the target context from the words.
190 + Fix : Some unlikely possible uninitialized reads, indirectly pointed
191 out in a Redhat review request.
192 + Fix : "localize *x, 'y' => $cxt" now matches Perl's behaviour for
194 + Fix : Miscellanous code cleanups, courtesy of Florian Ragwitz.
195 + Upd : Resources in META.yml.
197 0.06 2009-01-17 00:05 UTC
198 + Chg : INCOMPATIBLE CHANGE: The level is now absolute and no longer
199 relative to the current frame - we'll call it "context" from now
200 on. You should replace all your raw levels by combinations of
202 The old behaviour of "=> $n" can be easily reobtained by using
204 + Fix : As a result of this change, the module now plays nicely with
207 0.05 2009-01-12 18:15 UTC
208 + Fix : Stack mess when using unwind() in scalar context.
209 + Fix : Returning an automatic variable isn't wise, so let's use a
211 + Doc : Clarifications.
212 + Tst : Stress tests for unwind().
214 0.04 2009-01-11 18:40 UTC
215 + Add : unwind(@things, $level), that returns to an upper context.
216 + Add : want_at($level), that gives the wantarray for $level.
217 + Add : Control words, to reliably get the level of the n-th upper
218 subroutine or eval scope. TOPLEVEL was renamed to TOP.
219 + Fix : Tests with 5.6.
220 + Tst : Reordering and factoring some of the stress tests so that they
221 aren't needlessly ran several times.
223 0.03 2009-01-04 15:55 UTC
224 + Add : localize_delete(), that localize array/hash elements in upper
226 + Fix : Segfault when localizing array elements with an invalid negative
229 0.02 2008-12-28 18:40 UTC
230 + Doc : Clarifications and improvements.
231 + Fix : Missing compatibility macros.
232 + Fix : Localized nonexistant array elements should be deleted when
233 their time comes so that the array recovers its original length.
235 0.01 2008-12-26 16:05 UTC
236 First version, released on an unsuspecting world.