Errors when adding new member vars in 'struct function' ?

[Ian Lance Taylor]

QiangHuang <qianghuang87@gmail.com> writes:

>      I intend to add a new member var in the structure of 'struct
> function'.Take var 'struct if_fact' as an example.
>
>      struct function
>      {
>         ...
>         ...
>         struct if_fact;         /* new member var here. */
>      }
>
>      When compiled, an error occured, saying that "undefined reference
> to 'gt_pch_nx_if_fact' and 'gt_ggc_mx_if_fact' ".
>      These two missing functions seemed to be automatically generated
> by gengtype in the file of 'gtype-desc.c'.
>      Thus I don't exactly know how to solve this problem.

You need to define struct if_fact somewhere with a GTY annotation
somewhere that gengtype will see it.

http://gcc.gnu.org/onlinedocs/gccint/Type-Information.html

Ian