MAX_PATTERN_SIZE  160 srclib/pcre/internal.h #define MAX_PATTERN_SIZE (1 << 16)
MAX_PATTERN_SIZE  173 srclib/pcre/internal.h #define MAX_PATTERN_SIZE (1 << 24)
MAX_PATTERN_SIZE  187 srclib/pcre/internal.h #define MAX_PATTERN_SIZE (1 << 30)   /* Keep it positive */