ctypes_offset    7833 ext/pcre/pcrelib/pcre_compile.c cd->ctypes = tables + ctypes_offset;
ctypes_offset    6453 ext/pcre/pcrelib/pcre_exec.c md->ctypes = tables + ctypes_offset;
ctypes_offset    2563 ext/pcre/pcrelib/pcre_internal.h #define tables_length (ctypes_offset + 256)
ctypes_offset    1408 ext/pcre/pcrelib/pcre_study.c   compile_block.ctypes = tables + ctypes_offset;