ERROR_RETURN     1518 ext/pcre/pcrelib/pcre_compile.c if (c == CHAR_NULL) goto ERROR_RETURN;
ERROR_RETURN     1535 ext/pcre/pcrelib/pcre_compile.c     if (c == CHAR_NULL) goto ERROR_RETURN;
ERROR_RETURN     1539 ext/pcre/pcrelib/pcre_compile.c   if (c != CHAR_RIGHT_CURLY_BRACKET) goto ERROR_RETURN;
ERROR_RETURN     1576 ext/pcre/pcrelib/pcre_compile.c ERROR_RETURN: