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From: bagpiper@pnet02.gryphon.com (Michael Hunter)
Newsgroups: comp.lang.c
Subject: Re: "array" vs. "&array" ?
Message-ID: <24521@gryphon.COM>
Date: 10 Jan 90 04:20:22 GMT
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chuckp@ncr-fc.FtCollins.NCR.com (Chuck Phillips) writes:
>In article <2378@ektools.UUCP> randolph@ektools.UUCP (Gary L. Randolph) writes:
>>   Am I wrong in the inference from K&R that:
>
>>   float arrf[3] = {1.2,2.3,3.4};
>>   arrf;            /*evaluates to pointer to float according to K&R*/
>
>When declaring/defining arrf, space is allocated for a pointer to the array
>_in the symbol table_, _not_ in the actual object code.  (i.e.  this address
>may not manifest itself in the object code at all if never referenced)
>
>> &arrf; /*evaluates to pointer to pointer to float (my inference)*/
>
>So now, as I understand it, you're asking for a pointer to something that
>exists in the symbol table that is often stripped from the final version of
>programs.
>
This must be done by the linker or some postprocessor of the
executable...otherwise how could the compiler tell that a object is not
referenced in some other module (even static functions or varaibles via
pointers.)

                                Michael

Mike Hunter - Box's and CPU's from HELL: iapx80[012]86, PR1ME 50 Series, 1750a
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