VC++.NET 2003 should not issue C4090 ompiler warning in the following case

From: John Smith (johnsmith_smith_at_caramail.com)
Date: 08/03/04 

Date: 2 Aug 2004 21:12:50 -0700

Hi,

I would like to understand what's going on here:

const void *foo[10];

void bar(void)
{
  // issues warning C4090: 'function' : different 'const' qualifiers
  memset(foo, 0, sizeof(const void *) * 10);
}

Why does the VC++ compiler (7.1.3088) issue a warning here? The foo
array is not declared constant. Only the cell of the array is of type
const void *.
This is my first question.

Now, if I replace the code with:

typedef void *MYTYPE;
typedef const MYTYPE MYCONSTTYPE;

MYCONSTTYPE foo[10];

memset(foo, 0, sizeof(const void *) * 10);

then no warning is issued, although the code looks quite identical.

How is this possible?

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