imfs.h: warning cast from pointer to integer of different size

Joel Sherrill joel.sherrill at oarcorp.com
Thu Mar 19 15:27:11 UTC 2015



On March 19, 2015 9:52:56 AM CDT, Gedare Bloom <gedare at rtems.org> wrote:
>On Thu, Mar 19, 2015 at 10:49 AM, Joel Sherrill
><joel.sherrill at oarcorp.com> wrote:
>> Hi
>>
>> On one platform, we get a warning for this piece of code in imfs.h
>>
>> static inline ino_t IMFS_node_to_ino( const IMFS_jnode_t *node )
>> {
>>   return (ino_t) node;
>> }
>>
>> On this target, "typedef unsigned long ino_t;" and
>> sizeof(void *) < sizeof(unsigned long) so the cast is safe.
>>
>> Would we be better off with ino_t being uintptr_t since we
>> do cast it back and forth?
>>
>> Any other suggestions?
>>
>The safest fix is to use the new CPU_Uint32ptr type. This resolves to
>uintptr_t on most 32-bit+ archs.

The type ino_t is defined in newlib so this doesn't work.

>> --
>> Joel Sherrill, Ph.D.             Director of Research & Development
>> joel.sherrill at OARcorp.com        On-Line Applications Research
>> Ask me about RTEMS: a free RTOS  Huntsville AL 35805
>> Support Available                (256) 722-9985
>>
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--joel


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