Re: Into the Void

[Ron Michael Khu <ronkhu@ntsp.nec.co.jp>]

why dont u try casting the whole thing??
(putting an enclosing parenthesis on ur memcpy oper)

((char *) memcpy(*data_buf,bp,len))[len] = '\0';


Scott wrote:

>Years ago, I learned this trick from somebody in the C/C++ Journal, or
>whatever that rag was called:
>
>           memcpy(*data_buf,bp,len)[len] = '\0';
>
>I get the following error:
>
>indatax.c: In function `read_datum':
>indatax.c:374: warning: dereferencing `void *' pointer
>indatax.c:374: invalid use of void expression
>
>and if I cast the function:
>
>           (char *) memcpy(*data_buf,bp,len)[len] = '\0';
>
>I get:
>
>indatax.c: In function `read_datum':
>indatax.c:374: warning: dereferencing `void *' pointer
>indatax.c:374: void value not ignored as it ought to be
>
>What aren't I understanding here? Tell me to go away if these
>questions are too elementary for the list....
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