source: webkit/trunk/JavaScriptCore/pcre/pcre-config.h@ 17017

Last change on this file since 17017 was 14435, checked in by ap, 19 years ago

Reviewed by Darin.

Test: fast/js/regexp-stack-overflow.html

  • pcre/pcre-config.h: Define NO_RECURSE.
  • Property svn:eol-style set to native
File size: 4.3 KB
Line 
1/* On Unix systems config.in is converted by configure into config.h. PCRE is
2written in Standard C, but there are a few non-standard things it can cope
3with, allowing it to run on SunOS4 and other "close to standard" systems.
4
5On a non-Unix system you should just copy this file into config.h, and set up
6the macros the way you need them. You should normally change the definitions of
7HAVE_STRERROR and HAVE_MEMMOVE to 1. Unfortunately, because of the way autoconf
8works, these cannot be made the defaults. If your system has bcopy() and not
9memmove(), change the definition of HAVE_BCOPY instead of HAVE_MEMMOVE. If your
10system has neither bcopy() nor memmove(), leave them both as 0; an emulation
11function will be used. */
12
13/* If you are compiling for a system that uses EBCDIC instead of ASCII
14character codes, define this macro as 1. On systems that can use "configure",
15this can be done via --enable-ebcdic. */
16
17#define EBCDIC 0
18
19/* If you are compiling for a system that needs some magic to be inserted
20before the definition of an exported function, define this macro to contain the
21relevant magic. It apears at the start of every exported function. */
22
23#define EXPORT
24
25/* Define to empty if the "const" keyword does not work. */
26
27#undef const
28
29/* Define to "unsigned" if <stddef.h> doesn't define size_t. */
30
31#undef size_t
32
33/* The following two definitions are mainly for the benefit of SunOS4, which
34doesn't have the strerror() or memmove() functions that should be present in
35all Standard C libraries. The macros HAVE_STRERROR and HAVE_MEMMOVE should
36normally be defined with the value 1 for other systems, but unfortunately we
37can't make this the default because "configure" files generated by autoconf
38will only change 0 to 1; they won't change 1 to 0 if the functions are not
39found. */
40
41#define HAVE_STRERROR 1
42#define HAVE_MEMMOVE 1
43
44/* There are some non-Unix systems that don't even have bcopy(). If this macro
45is false, an emulation is used. If HAVE_MEMMOVE is set to 1, the value of
46HAVE_BCOPY is not relevant. */
47
48#define HAVE_BCOPY 1
49
50/* The value of NEWLINE determines the newline character. The default is to
51leave it up to the compiler, but some sites want to force a particular value.
52On Unix systems, "configure" can be used to override this default. */
53
54#define NEWLINE '\n'
55
56/* The value of LINK_SIZE determines the number of bytes used to store
57links as offsets within the compiled regex. The default is 2, which allows for
58compiled patterns up to 64K long. This covers the vast majority of cases.
59However, PCRE can also be compiled to use 3 or 4 bytes instead. This allows for
60longer patterns in extreme cases. On Unix systems, "configure" can be used to
61override this default. */
62
63#define LINK_SIZE 2
64
65/* The value of MATCH_LIMIT determines the default number of times the match()
66function can be called during a single execution of pcre_exec(). (There is a
67runtime method of setting a different limit.) The limit exists in order to
68catch runaway regular expressions that take for ever to determine that they do
69not match. The default is set very large so that it does not accidentally catch
70legitimate cases. On Unix systems, "configure" can be used to override this
71default default. */
72
73#define MATCH_LIMIT 10000000
74
75/* When calling PCRE via the POSIX interface, additional working storage is
76required for holding the pointers to capturing substrings because PCRE requires
77three integers per substring, whereas the POSIX interface provides only two. If
78the number of expected substrings is small, the wrapper function uses space on
79the stack, because this is faster than using malloc() for each call. The
80threshold above which the stack is no longer use is defined by POSIX_MALLOC_
81THRESHOLD. On Unix systems, "configure" can be used to override this default.
82*/
83
84#define POSIX_MALLOC_THRESHOLD 10
85
86/* PCRE uses recursive function calls to handle backtracking while matching.
87This can sometimes be a problem on systems that have stacks of limited size.
88Define NO_RECURSE to get a version that doesn't use recursion in the match()
89function; instead it creates its own stack by steam using pcre_recurse_malloc
90to get memory. For more detail, see comments and other stuff just above the
91match() function. On Unix systems, "configure" can be used to set this in the
92Makefile (use --disable-stack-for-recursion). */
93
94#define NO_RECURSE
95
96/* End */
97
98#define SUPPORT_UCP 1
99#define SUPPORT_UTF8 1
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