Am 30.01.2013 22:59, schrieb Richard Henderson:
> On 01/30/2013 01:04 PM, Stefan Weil wrote:
>>> static inline unsigned long leul_to_cpu(unsigned long v)
>>> {
>>> - return le_bswap(v, HOST_LONG_BITS);
>>> + /* In order to break an include loop between here and
>>> + qemu-common.h, don't rely on HOST_LONG_BITS. */
>>> +#if ULONG_MAX == UINT32_MAX
>>> + return le_bswap(v, 32);
>>> +#elif ULONG_MAX == UINT64_MAX
>>> + return le_bswap(v, 64);
>>> +#else
>>> +# error Unknown sizeof long
>>> +#endif
>>> }
>>>
>>> #undef le_bswap
>>
>> That would be wrong for 64 bit MinGW-w64 because
>> HOST_LONG_BITS is _not_ the bit size of a long value.
>>
>> See qemu-common.h for the correct definition.
>
> I beg your pardon, but it *is* right. HOST_LONG_BITS is set to the size
> of a host pointer, not a host long. Which suggests that my patch is the
> *only* correct way to do this, at least for now.
IIUC on w64 ULONG_MAX == UINT32_MAX but 64 is desired for pointer.
w64 is not C99-compliant.
Andreas
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