[PATCH] Cast small-int values through intptr_t when they're passed as pointers.

Matthieu Herrb matthieu.herrb at laas.fr
Sat Oct 3 23:07:31 PDT 2009

Daniel Stone wrote:
> On Fri, Oct 02, 2009 at 01:42:50PM -0700, Jamey Sharp wrote:
>> On 64-bit systems, int and pointers don't have the same size, so GCC gives
>> warnings about casts between int and pointer types. However, in the cases
>> covered by this patch, it's always a value that fits in int being stored
>> temporarily as a pointer and then converted back later, which is safe.
>> Casting through the pointer-sized integer type intptr_t convinces the
>> compiler that this is OK.
>> Signed-off-by: Jamey Sharp <jamey at minilop.net>
> Alan, Matthieu -- is this portable enough?

OpenBSD has intptr_t. But afaik there's a mess between different systems
to find out which header provide the definition.

I haven't tried to build an xserver with tht patch yet. I'll check that
later today.

Matthieu Herrb

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