[LLVMdev] How can I obtain upper bound of a pointer?

[David Blaikie]

This is rather off-topic for LLVM, it's a C programming question and the C
answer is: you can't. C doesn't expose any way to find the upper limit of
'Ptr' you just have to keep track of what size you used yourself.


On Sun, Dec 15, 2013 at 6:22 PM, 李永超 <lyc364 at gmail.com> wrote:

> Hi,
> How can I obtain the upper bound of a pointer in the code? For example, I
> have
> a pointer Ptr which points to a block of memory that is allocated by
> malloc, say,
>
> Ptr = malloc(size);
>
>
> Then what should I do if I am going to get the upper bound of the memory
> block
> that is pointed to by Ptr in the runtime?
>
> Thanks,
> Ben
>
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