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From: bobj@gli.com (Robert Jacobs)
Newsgroups: comp.lang.c++
Subject: pointer arithmitic on a void*
Summary: Is p+1 allowable if p is a void*?
Keywords: pointer arithmatic void*
Message-ID: <1990Sep7.144048.2049@gli.com>
Date: 7 Sep 90 14:40:48 GMT
Distribution: comp.std.c
Organization: General Logistics International, Inc.
Lines: 21


Is the following syntax allowable in c++. The reason I ask is because a version
of my compiler used to allow it but the UPGRADE forbids it.

int foo(void *p,int width)
{
	void *q;
	q = p+width;
}

The compiler complains about not knowing the size information.
In order to get this to work I have to recast p to either an int or a char*.

Note I am not trying to dereference a void. I know that is illegal.

If pointer arithmitic is not allowed on a void* then its usefullness is much
reduced.


Robert Jacobs
bobj@gli.com