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Increase limit for "must be present" code units for 8-bit searches, which use 

memchr().
This commit is contained in:
Philip.Hazel 2017-06-26 16:25:16 +00:00
parent 40c8fcd337
commit cc089cf971
2 changed files with 10 additions and 1 deletions
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4
ChangeLog
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@ -201,6 +201,10 @@ PCRE2_EXTRA_MATCH_WORD, and PCRE2_EXTRA_MATCH_LINE. This fixes two bugs:
44. Added configuration options for the SELinux compatible execmem allocator in 44. Added configuration options for the SELinux compatible execmem allocator in
JIT. JIT.
45. Increased the limit for searching for a "must be present" code unit in
subjects from 1000 to 2000 for 8-bit searches, since they use memchr() and are
much faster.
Version 10.23 14-February-2017 Version 10.23 14-February-2017
------------------------------ ------------------------------

7
src/pcre2_internal.h
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@ -557,9 +557,14 @@ enum { PCRE2_MATCHEDBY_INTERPRETER, /* pcre2_match() */
#define MAGIC_NUMBER 0x50435245UL /* 'PCRE' */ #define MAGIC_NUMBER 0x50435245UL /* 'PCRE' */
/* The maximum remaining length of subject we are prepared to search for a /* The maximum remaining length of subject we are prepared to search for a
req_unit match. */ req_unit match. In 8-bit mode, memchr() is used and is much faster than the
search loop that has to be used in 16-bit and 32-bit modes. */
#if PCRE2_CODE_UNIT_WIDTH == 8
#define REQ_CU_MAX 2000
#else
#define REQ_CU_MAX 1000 #define REQ_CU_MAX 1000
#endif
/* Offsets for the bitmap tables in the cbits set of tables. Each table /* Offsets for the bitmap tables in the cbits set of tables. Each table
contains a set of bits for a class map. Some classes are built by combining contains a set of bits for a class map. Some classes are built by combining