1 Revision history for Scope-Upper
3 0.22 2013-01-30 23:35 UTC
4 + Chg : perl 5.6.1 is required.
5 + Fix : context_info() now ignores %warnings::Bits for perl 5.8.6 and
6 below, just like caller().
7 + Fix : [RT #82220] : Scope-Upper-0.21 test stuck on Windows perl 5.12.3
8 t/93-pod-spelling.t will not crash anymore on perl 5.12 and
10 Thanks Gabor Szabo for reporting and Slaven Rezic for debugging
12 + Tst : Rare test failures of t/07-context_info.t on perl 5.6,
13 t/55-yield-target.t on perl 5.[68], and t/63-uplevel-ctl.t on
14 perl 5.8.[345] have been addressed.
16 0.21 2012-09-21 15:10 UTC
17 + Fix : context_info() has been taught about perl 5.17.4.
18 + Fix : t/07-context_info.t will no longer fail with perls that have
19 sitecustomize enabled (like many perl builds for Windows).
20 Thanks Steve Hay and Nicholas Clark for debugging help.
21 + Fix : Broken linkage on Windows with gcc 3.4, which appears in
22 particular when using ActivePerl's default compiler suite.
23 For those setups, the Scope::Upper shared library will now be
24 linked against the perl dll directly (instead of the import
27 0.20 2012-09-17 11:00 UTC
28 + Add : The new yield(@values, $context) function can be used to return
29 values to any upper scope, including do or map blocks.
30 The new leave(@values) function is an alias for
32 + Add : The new context_info($context) function return information
33 about context $context, similarly to what caller() provides
34 but for any upper scope.
35 + Chg : Contexts are now normalized. In previous versions, it was
36 possible for different contexts to refer to the same scope :
37 for example, "for (my $i = 0; $i < 10; ++$i) { ... }" was
38 reachable through two contexts, while "for (@array) { ... }"
39 only by one. Starting from this version, contexts are
40 normalized so that they always represent an actual scope.
41 + Doc : C++ compilers are officially NOT supported.
42 + Fix : Building with a more recent version of perl 5.17.4.
43 + Fix : Debugger compatibility with perl 5.17.1 and above.
45 0.19 2012-09-01 13:25 UTC
46 + Doc : POD headings have been made linkable.
47 + Fix : Building with perl 5.17.4.
48 + Fix : BUILD_PREREQS are now set for ExtUtils::MakeMaker.
49 + Opt : uplevel() private data structure is 7% smaller on 64 bits
51 + Tst : Author tests overhaul.
53 0.18 2011-10-10 20:50 UTC
54 + Add : The uid() function returns an unique identifier for each dynamic
55 scope. The validate_uid() function can be used to check whether
56 one such identifier is valid (i.e. that the scope it refers to
58 + Chg : It is no longer possible on perl 5.6 to call goto() in an
59 uplevel callback to replace the uplevel call. This change was
60 needed in order to ensure consistency between platforms
61 regarding to the following fix just below.
62 + Fix : The uplevel() tests now pass on Windows.
63 Thanks C.H. Kang for bringing this to my attention.
65 0.17 2011-10-03 21:45 UTC
66 + Fix : uplevel() will now use the correct pad when executing its
67 callback. This fixes at least two issues :
68 - closures defined inside the uplevel callback can now correctly
69 access lexicals from inside and outside the callback.
70 - state variables in the uplevel callback now work properly.
71 + Fix : It is now generally possible to call goto() in the uplevel'd
72 code to replace the uplevel stack frame. There are two cases
73 for which it is still not possible :
74 - if -D flags were set when running perl (as in "perl -Dt ...").
75 - if the perl runloop has been replaced with a custom one by
77 If uplevel() detects that the replacement code contains a goto
78 statement, and is in one of those two cases, then it will refuse
79 to execute the callback and throw an exception.
80 Note that this fix implies a run-time overhead of uplevel()
81 proportional to the size of the the callback in every case
82 (with a small ratio), and proportional to the size of ALL the
83 code executed as the result of the uplevel call (including
84 subroutine calls inside the callback) when a goto statement is
85 found in the uplevel callback.
86 + Fix : uplevel() has been taught how to handle XS callbacks properly.
87 + Fix : The cause of "Attempt to free unreferenced scalar" warnings
88 when using uplevel() has been addressed.
89 + Fix : [RT #71212] : build failure on Windows.
90 The module does no longer rely on calling Perl_cv_clone, which
92 Thanks C.H. Kang for reporting.
94 0.16 2011-09-03 23:00 UTC
95 + Add : uplevel($code, @args, $cxt) executes $code with arguments @args
96 in the upper context pointed by $cxt.
97 This is an XS version of the well-known uplevel() routine from
98 Sub::Uplevel. There are a few differences between both
99 implmentations that are listed in the documentation.
100 The XS version is roughly 10 times faster than the pure-Perl
103 0.15 2011-08-24 14:20 UTC
104 + Fix : Localizing subroutines in an higher scope will now correctly
105 update the method cache.
107 0.14 2011-02-27 00:00 UTC
108 + Fix : [RT #64997] : Compatibility with perl 5.13.10.
109 Thanks Dave Mitchell for the notice.
110 + Tst : Lengthy tests have been ported to Test::Leaner, making the
111 whole test suite about 50% faster.
113 0.13 2010-12-20 01:00 UTC
114 + Fix : [RT #61904] : Stack corruption when using unwind() under
116 Thanks Sergey Aleynikov for contributing a fix.
117 + Fix : [RT #63378] : Compatibility with perl 5.13.8.
118 Thanks Andreas J. König for bisecting the issue.
119 + Tst : Threads tests are now only run on perl 5.13.4 and higher.
120 They could segfault randomly because of what seems to be an
121 internal bug of Perl, which has been addressed in 5.13.4.
122 There is also an environment variable that allows you to
123 forcefully run those tests, but it should be set only for
124 author testing and not for end users.
126 0.12 2010-05-19 00:45 UTC
127 + Fix : Compatibility with perl 5.13.
128 + Fix : Test failures with perl 5.8.0.
129 + Fix : A minor leak of SVs when a non array/hash was passed to
132 0.11 2010-04-16 23:20 UTC
133 + Chg : It's now forbiddent to pass a reference to a non-glob variable
134 as the localization target of localize(), localize_elem() and
136 + Chg : localize_elem() now only accepts localization of arrays or hashs
137 elements. For other types, it used to be a synonym of localize.
138 + Chg : localize_elem() no longer accepts a glob as the target. You now
139 have to specify the variable as a string. This is because it was
140 impossible in this case to handle meaningfully the array or the
141 hash reference passed as the assigned value.
142 + Doc : The synopsys was revamped, and the rest of the documentation was
144 + Fix : [RT #55593] : Segfault when localizing hash or array element to
145 different package in different file.
146 Thanks Dagfinn Ilmari Mannsåker for reporting.
147 + Fix : [RT #56301] : reap loses eval context when dying naturally.
148 Thanks Andrew Main for reporting.
149 + Fix : Scope inconsistencies and segfaults when saving several
150 localizations into the same target scope.
151 + Fix : Stop skipping frames as a pop optimization. This caused breakage
152 under the debugger (and most likely outside as well).
154 0.10 2010-01-18 23:50 UTC
155 + Fix : Properly handle given/when on 5.10.
156 + Fix : Some stack inconsistencies were fixed, though they were unlikely
157 to have an impact on your real-life code.
158 + Fix : Work around Kwalitee test misfailures.
160 0.09 2009-05-17 20:20 UTC
161 + Add : The new SU_THREADSAFE constant can be used to know whether the
162 module could have been built with thread safety enabled.
163 + Chg : Thread safety is disabled for perl 5.8 on Win32.
164 + Chg : A saner workaround for the "call_sv() during LEAVE clobbers the
165 still used last popped stack element" issue on 5.10.
167 0.08 2009-04-16 22:50 UTC
168 + Fix : [RT #44204] : Stack corruption with reap(). Thanks Torsten
169 Foertsch for reporting.
170 + Fix : Building with Solaris CC.
171 + Tst : unwind() in threads.
173 0.07 2009-02-20 00:20 UTC
174 + Chg : The CLONE method will no longer be defined for non-threaded
176 + Doc : Some examples on how to build the target context from the words.
177 + Fix : Some unlikely possible uninitialized reads, indirectly pointed
178 out in a Redhat review request.
179 + Fix : "localize *x, 'y' => $cxt" now matches Perl's behaviour for
181 + Fix : Miscellanous code cleanups, courtesy of Florian Ragwitz.
182 + Upd : Resources in META.yml.
184 0.06 2009-01-17 00:05 UTC
185 + Chg : INCOMPATIBLE CHANGE: The level is now absolute and no longer
186 relative to the current frame - we'll call it "context" from now
187 on. You should replace all your raw levels by combinations of
189 The old behaviour of "=> $n" can be easily reobtained by using
191 + Fix : As a result of this change, the module now plays nicely with
194 0.05 2009-01-12 18:15 UTC
195 + Fix : Stack mess when using unwind() in scalar context.
196 + Fix : Returning an automatic variable isn't wise, so let's use a
198 + Doc : Clarifications.
199 + Tst : Stress tests for unwind().
201 0.04 2009-01-11 18:40 UTC
202 + Add : unwind(@things, $level), that returns to an upper context.
203 + Add : want_at($level), that gives the wantarray for $level.
204 + Add : Control words, to reliably get the level of the n-th upper
205 subroutine or eval scope. TOPLEVEL was renamed to TOP.
206 + Fix : Tests with 5.6.
207 + Tst : Reordering and factoring some of the stress tests so that they
208 aren't needlessly ran several times.
210 0.03 2009-01-04 15:55 UTC
211 + Add : localize_delete(), that localize array/hash elements in upper
213 + Fix : Segfault when localizing array elements with an invalid negative
216 0.02 2008-12-28 18:40 UTC
217 + Doc : Clarifications and improvements.
218 + Fix : Missing compatibility macros.
219 + Fix : Localized nonexistant array elements should be deleted when
220 their time comes so that the array recovers its original length.
222 0.01 2008-12-26 16:05 UTC
223 First version, released on an unsuspecting world.