Cast void * to u_int

Cast void * to u_int

[Brian McGrew]

Good morning!

I have a line of code as follows (excuse erroneous capitulation, it's my
mailer)

XtPointer client_data; // which is really void *
u_int days = reinterpret_cast<u_int>(client_data);

When I compile with gcc-4.1.2 I get:

error: cast from 'void*' to 'u_int' looses precision

This is the first time I've tried to rebuild this program with gcc-4, it was
previously build with gcc-2.95.2 (really old code but it works and is
simple).

What am I missing here???

Thanks!

-b

Re: Cast void * to u_int

[Adel Abushaev]

u_int is always 32bit.

A.

On Thu, Feb 4, 2010 at 10:26 AM, Brian McGrew <brian@visionpro.com> wrote:
> Good morning!
>
> I have a line of code as follows (excuse erroneous capitulation, it's my
> mailer)
>
> XtPointer client_data; // which is really void *
> u_int days = reinterpret_cast<u_int>(client_data);
>
> When I compile with gcc-4.1.2 I get:
>
> error: cast from 'void*' to 'u_int' looses precision
>
> This is the first time I've tried to rebuild this program with gcc-4, it was
> previously build with gcc-2.95.2 (really old code but it works and is
> simple).
>
> What am I missing here???
>
> Thanks!
>
> -b
>
>

Re: Cast void * to u_int

[Brian McGrew]

DOH!  

I knew that.  Much better now!  (see what happens when you work all night
with no sleep!)

-b


On 2/4/10 10:28 AM, "Adel Abushaev" <adel.abushaev@gmail.com> wrote:

> u_int is always 32bit.
> 
> A.
> 
> On Thu, Feb 4, 2010 at 10:26 AM, Brian McGrew <brian@visionpro.com> wrote:
>> Good morning!
>> 
>> I have a line of code as follows (excuse erroneous capitulation, it's my
>> mailer)
>> 
>> XtPointer client_data; // which is really void *
>> u_int days = reinterpret_cast<u_int>(client_data);
>> 
>> When I compile with gcc-4.1.2 I get:
>> 
>> error: cast from 'void*' to 'u_int' looses precision
>> 
>> This is the first time I've tried to rebuild this program with gcc-4, it was
>> previously build with gcc-2.95.2 (really old code but it works and is
>> simple).
>> 
>> What am I missing here???
>> 
>> Thanks!
>> 
>> -b
>> 
>> 

Re: Cast void * to u_int

[Thomas Martitz]

On 04.02.2010 19:37, Brian McGrew wrote:
> DOH!
>
> I knew that.  Much better now!  (see what happens when you work all night
> with no sleep!)
>
> -b
>
>
> On 2/4/10 10:28 AM, "Adel Abushaev"<adel.abushaev@gmail.com>  wrote:
>
>    
>> u_int is always 32bit.
>>
>> A.
>>
>> On Thu, Feb 4, 2010 at 10:26 AM, Brian McGrew<brian@visionpro.com>  wrote:
>>      
>>> Good morning!
>>>
>>> I have a line of code as follows (excuse erroneous capitulation, it's my
>>> mailer)
>>>
>>> XtPointer client_data; // which is really void *
>>> u_int days = reinterpret_cast<u_int>(client_data);
>>>
>>> When I compile with gcc-4.1.2 I get:
>>>
>>> error: cast from 'void*' to 'u_int' looses precision
>>>
>>> This is the first time I've tried to rebuild this program with gcc-4, it was
>>> previously build with gcc-2.95.2 (really old code but it works and is
>>> simple).
>>>
>>> What am I missing here???
>>>
>>> Thanks!
>>>
>>> -b
>>>
>>>
>>>        
>    

Pointer-to-int conversion should always happen with intptr_t.