MAX_PATTERN_SIZE  305 ext/pcre/pcrelib/pcre_internal.h #define MAX_PATTERN_SIZE (1 << 16)
MAX_PATTERN_SIZE  318 ext/pcre/pcrelib/pcre_internal.h #define MAX_PATTERN_SIZE (1 << 24)
MAX_PATTERN_SIZE  332 ext/pcre/pcrelib/pcre_internal.h #define MAX_PATTERN_SIZE (1 << 30)   /* Keep it positive */