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revision 964 by ph10, Fri May 4 13:03:39 2012 UTC revision 991 by zherczeg, Sun Jul 8 16:44:39 2012 UTC
# Line 1  Line 1 
1  ChangeLog for PCRE  ChangeLog for PCRE
2  ------------------  ------------------
3    
4  Version 8.31  Version 8.32
5  -----------------------------  ------------
6    
7    1.  Improved JIT compiler optimizations for first character search and single
8        character iterators.
9    
10    2.  Supporting IBM XL C compilers for PPC architectures in the JIT compiler.
11        Patch by Daniel Richard G.
12    
13    3.  Single character iterator optimizations in the JIT compiler.
14    
15    4.  Improved JIT compiler optimizations for character ranges.
16    
17    5.  Rename the "leave" variable names to "quit" to improve WinCE compatibility.
18        Reported by Giuseppe D'Angelo.
19    
20    
21    Version 8.31 06-July-2012
22    -------------------------
23    
24  1.  Fixing a wrong JIT test case and some compiler warnings.  1.  Fixing a wrong JIT test case and some compiler warnings.
25    
# Line 95  Version 8.31 Line 112  Version 8.31
112      \w+ when the character tables indicated that \x{c4} was a word character.      \w+ when the character tables indicated that \x{c4} was a word character.
113      There were several related cases, all because the tests for doing a table      There were several related cases, all because the tests for doing a table
114      lookup were testing for characters less than 127 instead of 255.      lookup were testing for characters less than 127 instead of 255.
115    
116  27. If a pattern contains capturing parentheses that are not used in a match,  27. If a pattern contains capturing parentheses that are not used in a match,
117      their slots in the ovector are set to -1. For those that are higher than      their slots in the ovector are set to -1. For those that are higher than
118      any matched groups, this happens at the end of processing. In the case when      any matched groups, this happens at the end of processing. In the case when
119      there were back references that the ovector was too small to contain      there were back references that the ovector was too small to contain
120      (causing temporary malloc'd memory to be used during matching), and the      (causing temporary malloc'd memory to be used during matching), and the
121      highest capturing number was not used, memory off the end of the ovector      highest capturing number was not used, memory off the end of the ovector
122      was incorrectly being set to -1. (It was using the size of the temporary      was incorrectly being set to -1. (It was using the size of the temporary
123      memory instead of the true size.)      memory instead of the true size.)
124    
125  28. To catch bugs like 27 using valgrind, when pcretest is asked to specify an  28. To catch bugs like 27 using valgrind, when pcretest is asked to specify an
126      ovector size, it uses memory at the end of the block that it has got.      ovector size, it uses memory at the end of the block that it has got.
127    
128  29. Check for an overlong MARK name and give an error at compile time. The  29. Check for an overlong MARK name and give an error at compile time. The
129      limit is 255 for the 8-bit library and 65535 for the 16-bit library.      limit is 255 for the 8-bit library and 65535 for the 16-bit library.
130    
131    30. JIT compiler update.
132    
133    31. JIT is now supported on jailbroken iOS devices. Thanks for Ruiger
134        Rill for the patch.
135    
136    32. Put spaces around SLJIT_PRINT_D in the JIT compiler. Required by CXX11.
137    
138    33. Variable renamings in the PCRE-JIT compiler. No functionality change.
139    
140    34. Fixed typos in pcregrep: in two places there was SUPPORT_LIBZ2 instead of
141        SUPPORT_LIBBZ2. This caused a build problem when bzip2 but not gzip (zlib)
142        was enabled.
143    
144    35. Improve JIT code generation for greedy plus quantifier.
145    
146    36. When /((?:a?)*)*c/ or /((?>a?)*)*c/ was matched against "aac", it set group
147        1 to "aa" instead of to an empty string. The bug affected repeated groups
148        that could potentially match an empty string.
149    
150    37. Optimizing single character iterators in JIT.
151    
152    38. Wide characters specified with \uxxxx in JavaScript mode are now subject to
153        the same checks as \x{...} characters in non-JavaScript mode. Specifically,
154        codepoints that are too big for the mode are faulted, and in a UTF mode,
155        disallowed codepoints are also faulted.
156    
157    39. If PCRE was compiled with UTF support, in three places in the DFA
158        matcher there was code that should only have been obeyed in UTF mode, but
159        was being obeyed unconditionally. In 8-bit mode this could cause incorrect
160        processing when bytes with values greater than 127 were present. In 16-bit
161        mode the bug would be provoked by values in the range 0xfc00 to 0xdc00. In
162        both cases the values are those that cannot be the first data item in a UTF
163        character. The three items that might have provoked this were recursions,
164        possessively repeated groups, and atomic groups.
165    
166    40. Ensure that libpcre is explicitly listed in the link commands for pcretest
167        and pcregrep, because some OS require shared objects to be explicitly
168        passed to ld, causing the link step to fail if they are not.
169    
170    41. There were two incorrect #ifdefs in pcre_study.c, meaning that, in 16-bit
171        mode, patterns that started with \h* or \R* might be incorrectly matched.
172    
173    
174  Version 8.30 04-February-2012  Version 8.30 04-February-2012
175  -----------------------------  -----------------------------

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