| 23 |
6. Lookbehinds such as (?<=a{2}b) that contained a fixed repetition were |
6. Lookbehinds such as (?<=a{2}b) that contained a fixed repetition were |
| 24 |
erroneously being rejected as "not fixed length" if PCRE_CASELESS was set. |
erroneously being rejected as "not fixed length" if PCRE_CASELESS was set. |
| 25 |
This bug was probably introduced by change 9 of 8.13. |
This bug was probably introduced by change 9 of 8.13. |
| 26 |
|
|
| 27 |
|
7. While fixing 6 above, I noticed that a number of other items were being |
| 28 |
|
incorrectly rejected as "not fixed length". This arose partly because newer |
| 29 |
|
opcodes had not been added to the fixed-length checking code. I have (a) |
| 30 |
|
corrected the bug and added tests for these items, and (b) arranged for an |
| 31 |
|
error to occur if an unknown opcode is encountered while checking for fixed |
| 32 |
|
length instead of just assuming "not fixed length". The items that were |
| 33 |
|
rejected were: (*ACCEPT), (*COMMIT), (*FAIL), (*MARK), (*PRUNE), (*SKIP), |
| 34 |
|
(*THEN), \h, \H, \v, \V, and single character negative classes with fixed |
| 35 |
|
repetitions, e.g. [^a]{3}, with and without PCRE_CASELESS. |
| 36 |
|
|
| 37 |
|
8. A possessively repeated conditional subpattern such as (?(?=c)c|d)++ was |
| 38 |
|
being incorrectly compiled and would have given unpredicatble results. |
| 39 |
|
|
| 40 |
|
9. A possessively repeated subpattern with minimum repeat count greater than |
| 41 |
|
one behaved incorrectly. For example, (A){2,}+ behaved as if it was |
| 42 |
|
(A)(A)++ which meant that, after a subsequent mismatch, backtracking into |
| 43 |
|
the first (A) could occur when it should not. |
| 44 |
|
|
| 45 |
|
10. Add a cast and remove a redundant test from the code. |
| 46 |
|
|
| 47 |
|
11. JIT should use pcre_malloc/pcre_free for allocation. |
| 48 |
|
|
| 49 |
|
12. Updated pcre-config so that it no longer shows -L/usr/lib, which seems |
| 50 |
|
best practice nowadays, and helps with cross-compiling. (If the exec_prefix |
| 51 |
|
is anything other than /usr, -L is still shown). |
| 52 |
|
|
| 53 |
|
13. In non-UTF-8 mode, \C is now supported in lookbehinds and DFA matching. |
| 54 |
|
|
| 55 |
|
14. Perl does not support \N without a following name in a [] class; PCRE now |
| 56 |
|
also gives an error. |
| 57 |
|
|
| 58 |
|
15. If a forward reference was repeated with an upper limit of around 2000, |
| 59 |
|
it caused the error "internal error: overran compiling workspace". The |
| 60 |
|
maximum number of forward references (including repeats) was limited by the |
| 61 |
|
internal workspace, and dependent on the LINK_SIZE. The code has been |
| 62 |
|
rewritten so that the workspace expands (via pcre_malloc) if necessary, and |
| 63 |
|
the default depends on LINK_SIZE. There is a new upper limit (for safety) |
| 64 |
|
of around 200,000 forward references. While doing this, I also speeded up |
| 65 |
|
the filling in of repeated forward references. |
| 66 |
|
|
| 67 |
|
16. A repeated forward reference in a pattern such as (a)(?2){2}(.) was |
| 68 |
|
incorrectly expecting the subject to contain another "a" after the start. |
| 69 |
|
|
| 70 |
|
17. When (*SKIP:name) is activated without a corresponding (*MARK:name) earlier |
| 71 |
|
in the match, the SKIP should be ignored. This was not happening; instead |
| 72 |
|
the SKIP was being treated as NOMATCH. For patterns such as |
| 73 |
|
/A(*MARK:A)A+(*SKIP:B)Z|AAC/ this meant that the AAC branch was never |
| 74 |
|
tested. |
| 75 |
|
|
| 76 |
|
18. The behaviour of (*MARK), (*PRUNE), and (*THEN) has been reworked and is |
| 77 |
|
now much more compatible with Perl, in particular in cases where the result |
| 78 |
|
is a non-match for a non-anchored pattern. For example, if |
| 79 |
|
/b(*:m)f|a(*:n)w/ is matched against "abc", the non-match returns the name |
| 80 |
|
"m", where previously it did not return a name. A side effect of this |
| 81 |
|
change is that for partial matches, the last encountered mark name is |
| 82 |
|
returned, as for non matches. A number of tests that were previously not |
| 83 |
|
Perl-compatible have been moved into the Perl-compatible test files. The |
| 84 |
|
refactoring has had the pleasing side effect of removing one argument from |
| 85 |
|
the match() function, thus reducing its stack requirements. |
| 86 |
|
|
| 87 |
|
19. If the /S+ option was used in pcretest to study a pattern using JIT, |
| 88 |
|
subsequent uses of /S (without +) incorrectly behaved like /S+. |
| 89 |
|
|
| 90 |
|
21. Retrieve executable code size support for the JIT compiler and fixing |
| 91 |
|
some warnings. |
| 92 |
|
|
| 93 |
|
22. A caseless match of a UTF-8 character whose other case uses fewer bytes did |
| 94 |
|
not work when the shorter character appeared right at the end of the |
| 95 |
|
subject string. |
| 96 |
|
|
| 97 |
|
23. Added some (int) casts to non-JIT modules to reduce warnings on 64-bit |
| 98 |
|
systems. |
| 99 |
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|
| 100 |
|
24. Added PCRE_INFO_JITSIZE to pass on the value from (21) above, and also |
| 101 |
|
output it when the /M option is used in pcretest. |
| 102 |
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|
| 103 |
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|
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Version 8.20 21-Oct-2011 |
Version 8.20 21-Oct-2011 |
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Revision Log
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Patch