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| 129 | .\" ======================================================================== |
| 130 | .\" |
| 131 | .IX Title "PERL582DELTA 1" |
| 132 | .TH PERL582DELTA 1 "2006-01-07" "perl v5.8.8" "Perl Programmers Reference Guide" |
| 133 | .SH "NAME" |
| 134 | perl582delta \- what is new for perl v5.8.2 |
| 135 | .SH "DESCRIPTION" |
| 136 | .IX Header "DESCRIPTION" |
| 137 | This document describes differences between the 5.8.1 release and |
| 138 | the 5.8.2 release. |
| 139 | .PP |
| 140 | If you are upgrading from an earlier release such as 5.6.1, first read |
| 141 | the perl58delta, which describes differences between 5.6.0 and |
| 142 | 5.8.0, and the perl581delta, which describes differences between |
| 143 | 5.8.0 and 5.8.1. |
| 144 | .SH "Incompatible Changes" |
| 145 | .IX Header "Incompatible Changes" |
| 146 | For threaded builds for modules calling certain re-entrant system calls, |
| 147 | binary compatibility was accidentally lost between 5.8.0 and 5.8.1. |
| 148 | Binary compatibility with 5.8.0 has been restored in 5.8.2, which |
| 149 | necessitates breaking compatibility with 5.8.1. We see this as the |
| 150 | lesser of two evils. |
| 151 | .PP |
| 152 | This will only affect people who have a threaded perl 5.8.1, and compiled |
| 153 | modules which use these calls, and now attempt to run the compiled modules |
| 154 | with 5.8.2. The fix is to re-compile and re-install the modules using 5.8.2. |
| 155 | .SH "Core Enhancements" |
| 156 | .IX Header "Core Enhancements" |
| 157 | .Sh "Hash Randomisation" |
| 158 | .IX Subsection "Hash Randomisation" |
| 159 | The hash randomisation introduced with 5.8.1 has been amended. It |
| 160 | transpired that although the implementation introduced in 5.8.1 was source |
| 161 | compatible with 5.8.0, it was not binary compatible in certain cases. 5.8.2 |
| 162 | contains an improved implementation which is both source and binary |
| 163 | compatible with both 5.8.0 and 5.8.1, and remains robust against the form of |
| 164 | attack which prompted the change for 5.8.1. |
| 165 | .PP |
| 166 | We are grateful to the Debian project for their input in this area. |
| 167 | See \*(L"Algorithmic Complexity Attacks\*(R" in perlsec for the original |
| 168 | rationale behind this change. |
| 169 | .Sh "Threading" |
| 170 | .IX Subsection "Threading" |
| 171 | Several memory leaks associated with variables shared between threads |
| 172 | have been fixed. |
| 173 | .SH "Modules and Pragmata" |
| 174 | .IX Header "Modules and Pragmata" |
| 175 | .Sh "Updated Modules And Pragmata" |
| 176 | .IX Subsection "Updated Modules And Pragmata" |
| 177 | The following modules and pragmata have been updated since Perl 5.8.1: |
| 178 | .IP "Devel::PPPort" 4 |
| 179 | .IX Item "Devel::PPPort" |
| 180 | .PD 0 |
| 181 | .IP "Digest::MD5" 4 |
| 182 | .IX Item "Digest::MD5" |
| 183 | .IP "I18N::LangTags" 4 |
| 184 | .IX Item "I18N::LangTags" |
| 185 | .IP "libnet" 4 |
| 186 | .IX Item "libnet" |
| 187 | .IP "MIME::Base64" 4 |
| 188 | .IX Item "MIME::Base64" |
| 189 | .IP "Pod::Perldoc" 4 |
| 190 | .IX Item "Pod::Perldoc" |
| 191 | .IP "strict" 4 |
| 192 | .IX Item "strict" |
| 193 | .PD |
| 194 | Documentation improved |
| 195 | .IP "Tie::Hash" 4 |
| 196 | .IX Item "Tie::Hash" |
| 197 | Documentation improved |
| 198 | .IP "Time::HiRes" 4 |
| 199 | .IX Item "Time::HiRes" |
| 200 | .PD 0 |
| 201 | .IP "Unicode::Collate" 4 |
| 202 | .IX Item "Unicode::Collate" |
| 203 | .IP "Unicode::Normalize" 4 |
| 204 | .IX Item "Unicode::Normalize" |
| 205 | .IP "\s-1UNIVERSAL\s0" 4 |
| 206 | .IX Item "UNIVERSAL" |
| 207 | .PD |
| 208 | Documentation improved |
| 209 | .SH "Selected Bug Fixes" |
| 210 | .IX Header "Selected Bug Fixes" |
| 211 | Some syntax errors involving unrecognized filetest operators are now handled |
| 212 | correctly by the parser. |
| 213 | .SH "Changed Internals" |
| 214 | .IX Header "Changed Internals" |
| 215 | Interpreter initialization is more complete when \-DMULTIPLICITY is off. |
| 216 | This should resolve problems with initializing and destroying the Perl |
| 217 | interpreter more than once in a single process. |
| 218 | .SH "Platform Specific Problems" |
| 219 | .IX Header "Platform Specific Problems" |
| 220 | Dynamic linker flags have been tweaked for Solaris and \s-1OS\s0 X, which should |
| 221 | solve problems seen while building some \s-1XS\s0 modules. |
| 222 | .PP |
| 223 | Bugs in \s-1OS/2\s0 sockets and tmpfile have been fixed. |
| 224 | .PP |
| 225 | In \s-1OS\s0 X \f(CW\*(C`setreuid\*(C'\fR and friends are troublesome \- perl will now work |
| 226 | around their problems as best possible. |
| 227 | .SH "Future Directions" |
| 228 | .IX Header "Future Directions" |
| 229 | Starting with 5.8.3 we intend to make more frequent maintenance releases, |
| 230 | with a smaller number of changes in each. The intent is to propagate |
| 231 | bug fixes out to stable releases more rapidly and make upgrading stable |
| 232 | releases less of an upheaval. This should give end users more |
| 233 | flexibility in their choice of upgrade timing, and allow them easier |
| 234 | assessment of the impact of upgrades. The current plan is for code freezes |
| 235 | as follows |
| 236 | .IP "\(bu" 4 |
| 237 | 5.8.3 23:59:59 \s-1GMT\s0, Wednesday December 31st 2003 |
| 238 | .IP "\(bu" 4 |
| 239 | 5.8.4 23:59:59 \s-1GMT\s0, Wednesday March 31st 2004 |
| 240 | .IP "\(bu" 4 |
| 241 | 5.8.5 23:59:59 \s-1GMT\s0, Wednesday June 30th 2004 |
| 242 | .PP |
| 243 | with the release following soon after, when testing is complete. |
| 244 | .PP |
| 245 | See \*(L"Future Directions\*(R" in perl581delta for more soothsaying. |
| 246 | .SH "Reporting Bugs" |
| 247 | .IX Header "Reporting Bugs" |
| 248 | If you find what you think is a bug, you might check the articles |
| 249 | recently posted to the comp.lang.perl.misc newsgroup and the perl |
| 250 | bug database at http://bugs.perl.org/. There may also be |
| 251 | information at http://www.perl.com/, the Perl Home Page. |
| 252 | .PP |
| 253 | If you believe you have an unreported bug, please run the \fBperlbug\fR |
| 254 | program included with your release. Be sure to trim your bug down |
| 255 | to a tiny but sufficient test case. Your bug report, along with the |
| 256 | output of \f(CW\*(C`perl \-V\*(C'\fR, will be sent off to perlbug@perl.org to be |
| 257 | analysed by the Perl porting team. You can browse and search |
| 258 | the Perl 5 bugs at http://bugs.perl.org/ |
| 259 | .SH "SEE ALSO" |
| 260 | .IX Header "SEE ALSO" |
| 261 | The \fIChanges\fR file for exhaustive details on what changed. |
| 262 | .PP |
| 263 | The \fI\s-1INSTALL\s0\fR file for how to build Perl. |
| 264 | .PP |
| 265 | The \fI\s-1README\s0\fR file for general stuff. |
| 266 | .PP |
| 267 | The \fIArtistic\fR and \fICopying\fR files for copyright information. |