Patch core for PCRE2 support

RFC https://wiki.php.net/rfc/pcre2-migration

1 files changed, 105 insertions, 0 deletions

diff --git a/ext/pcre/pcre2lib/config.h b/ext/pcre/pcre2lib/config.h
new file mode 100644
index 0000000000..439c895e4d
--- /dev/null
+++ b/ext/pcre/pcre2lib/config.h
@@ -0,0 +1,105 @@
+
+#include <php_compat.h>
+
+#ifdef PHP_WIN32
+# include <config.w32.h>
+#else
+# include <php_config.h>
+#endif
+
+#undef PACKAGE_NAME
+#undef PACKAGE_VERSION
+#undef PACKAGE_TARNAME
+#undef PACKAGE_STRING
+
+#define SUPPORT_UNICODE 1
+#define SUPPORT_PCRE2_8 1
+
+#if defined(__GNUC__) && __GNUC__ >= 4
+# ifdef __cplusplus
+#  define PCRE2_EXP_DECL		extern "C" __attribute__ ((visibility("default")))
+# else
+#  define PCRE2_EXP_DECL		extern __attribute__ ((visibility("default")))
+# endif
+# define PCRE2_EXP_DEFN		__attribute__ ((visibility("default")))
+#endif
+
+/* Define to any value for valgrind support to find invalid memory reads. */
+#if HAVE_PCRE_VALGRIND_SUPPORT
+#define SUPPORT_VALGRIND 1
+#endif
+
+/* Define to any value to enable support for Just-In-Time compiling. */
+#if HAVE_PCRE_JIT_SUPPORT
+#define SUPPORT_JIT
+#endif
+
+/* This limits the amount of memory that pcre2_match() may use while matching
+   a pattern. The value is in kilobytes. */
+#ifndef HEAP_LIMIT
+#define HEAP_LIMIT 20000000
+#endif
+
+/* The value of PARENS_NEST_LIMIT specifies the maximum depth of nested
+   parentheses (of any kind) in a pattern. This limits the amount of system
+   stack that is used while compiling a pattern. */
+#ifndef PARENS_NEST_LIMIT
+#define PARENS_NEST_LIMIT 250
+#endif
+
+/* The value of MATCH_LIMIT determines the default number of times the
+   pcre2_match() function can record a backtrack position during a single
+   matching attempt. There is a runtime interface for setting a different
+   limit. The limit exists in order to catch runaway regular expressions that
+   take for ever to determine that they do not match. The default is set very
+   large so that it does not accidentally catch legitimate cases. */
+#ifndef MATCH_LIMIT
+#define MATCH_LIMIT 10000000
+#endif
+
+/* The above limit applies to all backtracks, whether or not they are nested.
+   In some environments it is desirable to limit the nesting of backtracking
+   (that is, the depth of tree that is searched) more strictly, in order to
+   restrict the maximum amount of heap memory that is used. The value of
+   MATCH_LIMIT_DEPTH provides this facility. To have any useful effect, it
+   must be less than the value of MATCH_LIMIT. The default is to use the same
+   value as MATCH_LIMIT. There is a runtime method for setting a different
+   limit. */
+#ifndef MATCH_LIMIT_DEPTH
+#define MATCH_LIMIT_DEPTH MATCH_LIMIT
+#endif
+
+/* This limit is parameterized just in case anybody ever wants to change it.
+   Care must be taken if it is increased, because it guards against integer
+   overflow caused by enormously large patterns. */
+#ifndef MAX_NAME_COUNT
+#define MAX_NAME_COUNT 10000
+#endif
+
+/* This limit is parameterized just in case anybody ever wants to change it.
+   Care must be taken if it is increased, because it guards against integer
+   overflow caused by enormously large patterns. */
+#ifndef MAX_NAME_SIZE
+#define MAX_NAME_SIZE 32
+#endif
+
+/* Defining NEVER_BACKSLASH_C locks out the use of \C in all patterns. */
+/* #undef NEVER_BACKSLASH_C */
+
+/* The value of NEWLINE_DEFAULT determines the default newline character
+   sequence. PCRE2 client programs can override this by selecting other values
+   at run time. The valid values are 1 (CR), 2 (LF), 3 (CRLF), 4 (ANY), 5
+   (ANYCRLF), and 6 (NUL). */
+#ifndef NEWLINE_DEFAULT
+#define NEWLINE_DEFAULT 2
+#endif
+
+/* The value of LINK_SIZE determines the number of bytes used to store links
+   as offsets within the compiled regex. The default is 2, which allows for
+   compiled patterns up to 64K long. This covers the vast majority of cases.
+   However, PCRE2 can also be compiled to use 3 or 4 bytes instead. This
+   allows for longer patterns in extreme cases. */
+#ifndef LINK_SIZE
+#define LINK_SIZE 2
+#endif
+