Re: sizeof([ALLOCATED MEMORY])

In article <eJ6dnTe9u7iOZMrZnZ2dnUVZ8sydnZ2d@xxxxxx>,
Richard Heathfield <invalid@xxxxxxxxxxxxxxx> wrote:

ballpointpenthief said:

If I have malloc()'ed a pointer and want to read from it as if it were
an array, I need to know that I won't be reading past the last index.

When you allocate the memory, you know precisely how much memory you are
requesting.

Don't Forget (tm).

However when you allocate the memory, you don't know precisely how much
you received. It could be more than you requested. And common
applications exist which could make use of that extra memory if only
they knew it existed (e.g. a dynamic array).

Major OS's provide this functionality in a non-portable fashion. Imho C
should provide a portable layer over this functionality.

-Howard
.

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