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revision 974 by zherczeg, Sat Jun 2 05:56:58 2012 UTC revision 1009 by zherczeg, Wed Aug 22 12:01:22 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    6.  The PCRE_STARTLINE bit, indicating that a match can occur only at the start
21        of a line, was being set incorrectly in cases where .* appeared inside
22        atomic brackets at the start of a pattern, or where there was a subsequent
23        *PRUNE or *SKIP.
24    
25    7.  Improved instruction cache flush for POWER/PowerPC.
26        Patch by Daniel Richard G.
27    
28    8.  Fixed a number of issues in pcregrep, making it more compatible with GNU
29        grep:
30    
31        (a) There is now no limit to the number of patterns to be matched.
32    
33        (b) An error is given if a pattern is too long.
34    
35        (c) Multiple uses of --exclude, --exclude-dir, --include, and --include-dir
36            are now supported.
37    
38        (d) --exclude-from and --include-from (multiple use) have been added.
39    
40        (e) Exclusions and inclusions now apply to all files and directories, not
41            just to those obtained from scanning a directory recursively.
42    
43        (f) Multiple uses of -f and --file-list are now supported.
44    
45        (g) In a Windows environment, the default for -d has been changed from
46            "read" (the GNU grep default) to "skip", because otherwise the presence
47            of a directory in the file list provokes an error.
48    
49        (h) The documentation has been revised and clarified in places.
50    
51    9.  Improve the matching speed of capturing brackets.
52    
53    
54    Version 8.31 06-July-2012
55    -------------------------
56    
57  1.  Fixing a wrong JIT test case and some compiler warnings.  1.  Fixing a wrong JIT test case and some compiler warnings.
58    
# Line 95  Version 8.31 Line 145  Version 8.31
145      \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.
146      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
147      lookup were testing for characters less than 127 instead of 255.      lookup were testing for characters less than 127 instead of 255.
148    
149  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,
150      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
151      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
152      there were back references that the ovector was too small to contain      there were back references that the ovector was too small to contain
153      (causing temporary malloc'd memory to be used during matching), and the      (causing temporary malloc'd memory to be used during matching), and the
154      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
155      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
156      memory instead of the true size.)      memory instead of the true size.)
157    
158  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
159      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.
160    
161  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
162      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.
163    
164  30. JIT compiler update.  30. JIT compiler update.
# Line 120  Version 8.31 Line 170  Version 8.31
170    
171  33. Variable renamings in the PCRE-JIT compiler. No functionality change.  33. Variable renamings in the PCRE-JIT compiler. No functionality change.
172    
173  34. Fixed typos in pcregrep: in two places there was SUPPORT_LIBZ2 instead of  34. Fixed typos in pcregrep: in two places there was SUPPORT_LIBZ2 instead of
174      SUPPORT_LIBBZ2. This caused a build problem when bzip2 but not gzip (zlib)      SUPPORT_LIBBZ2. This caused a build problem when bzip2 but not gzip (zlib)
175      was enabled.      was enabled.
176    
177  35. Improve JIT code generation for greedy plus quantifier.  35. Improve JIT code generation for greedy plus quantifier.
178    
179    36. When /((?:a?)*)*c/ or /((?>a?)*)*c/ was matched against "aac", it set group
180        1 to "aa" instead of to an empty string. The bug affected repeated groups
181        that could potentially match an empty string.
182    
183    37. Optimizing single character iterators in JIT.
184    
185    38. Wide characters specified with \uxxxx in JavaScript mode are now subject to
186        the same checks as \x{...} characters in non-JavaScript mode. Specifically,
187        codepoints that are too big for the mode are faulted, and in a UTF mode,
188        disallowed codepoints are also faulted.
189    
190    39. If PCRE was compiled with UTF support, in three places in the DFA
191        matcher there was code that should only have been obeyed in UTF mode, but
192        was being obeyed unconditionally. In 8-bit mode this could cause incorrect
193        processing when bytes with values greater than 127 were present. In 16-bit
194        mode the bug would be provoked by values in the range 0xfc00 to 0xdc00. In
195        both cases the values are those that cannot be the first data item in a UTF
196        character. The three items that might have provoked this were recursions,
197        possessively repeated groups, and atomic groups.
198    
199    40. Ensure that libpcre is explicitly listed in the link commands for pcretest
200        and pcregrep, because some OS require shared objects to be explicitly
201        passed to ld, causing the link step to fail if they are not.
202    
203    41. There were two incorrect #ifdefs in pcre_study.c, meaning that, in 16-bit
204        mode, patterns that started with \h* or \R* might be incorrectly matched.
205    
206    
207  Version 8.30 04-February-2012  Version 8.30 04-February-2012
208  -----------------------------  -----------------------------

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