check_posix_syntax 2736 ext/pcre/pcrelib/pcre_compile.c         check_posix_syntax(ptr, endptr))
check_posix_syntax 4050 ext/pcre/pcrelib/pcre_compile.c         check_posix_syntax(ptr, &tempptr))
check_posix_syntax 4171 ext/pcre/pcrelib/pcre_compile.c            ptr[1] == CHAR_EQUALS_SIGN) && check_posix_syntax(ptr, &tempptr))