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From: etb@milton.u.washington.edu (Eric Bushnell)
Newsgroups: comp.sys.apollo
Subject: function prototype mystery?
Message-ID: <1991Apr11.164655.17092@milton.u.washington.edu>
Date: 11 Apr 91 16:46:55 GMT
Sender: etb@milton.u.washington.edu (Eric Bushnell)
Organization: University of Washington, Seattle
Lines: 33

I don't understand the argument declarations used
in the following function prototype. Could someone
give me a clue? I tried RTFM, with no luck.

I'm using the apollo system call proc2_$get_info(),
which is defined in proc2.h as:

void proc2_$get_info(
        uid_$t          &p2_uid,
        proc2_$info_t   *info,
        pinteger        &info_buf_len,  /* size of info buffer (bytes) */
        status_$t       *sts
);

What do the &'s do to the first and third arguments?
It looks to me like the function expects addresses, but if
I pass addresses to it, the compiler (cc 6.7.m, OS10.3) complains
that the argument type conflicts with the declaration.

What works is something like proc2_$get_info(p2_uid,&info,bufferlength,&status).Why? Is this some kind of apollo-ism, or something ANSI-like?

Thanks, as always

Eric Bushnell
UW Civil Engineering
etb@u.washington.edu


-- 
Eric Bushnell
Univ of Washington Civil Engineering
etb@zeus.ce.washington.edu
etb@milton.u.washington.edu