[PATCH] score: Support static_assert and _Static_assert

[Sebastian Huber]

On 11/05/2012 05:01 AM, Ralf Corsepius wrote:
> On 11/04/2012 07:56 PM, Sebastian Huber wrote:
>> ---
>>   cpukit/score/include/rtems/score/basedefs.h |   12 ++++++++++--
>>   1 file changed, 10 insertions(+), 2 deletions(-)
>>
>> diff --git a/cpukit/score/include/rtems/score/basedefs.h
>> b/cpukit/score/include/rtems/score/basedefs.h
>> index 1f8660c..8239994 100644
>> --- a/cpukit/score/include/rtems/score/basedefs.h
>> +++ b/cpukit/score/include/rtems/score/basedefs.h
>> @@ -163,8 +163,16 @@
>>     #define RTEMS_COMPILER_DEPRECATED_ATTRIBUTE
>>   #endif
>>
>> -#define RTEMS_STATIC_ASSERT(cond, msg) \
>> -  typedef int rtems_static_assert_ ## msg [(cond) ? 1 : -1]
>> +#if __cplusplus >= 201103L
>> +  #define RTEMS_STATIC_ASSERT(cond, msg) \
>> +    static_assert(cond, # msg)
>> +#elif __STDC_VERSION__ >= 201112L
>> +  #define RTEMS_STATIC_ASSERT(cond, msg) \
>> +    _Static_assert(cond, # msg)
>> +#else
>> +  #define RTEMS_STATIC_ASSERT(cond, msg) \
>> +    typedef int rtems_static_assert_ ## msg [(cond) ? 1 : -1]
>> +#endif
>>
>>   #ifndef ASM
>>     #ifdef RTEMS_DEPRECATED_TYPES
>>
>
> This patch longs for an explanation - Which issue/bug are you trying to fix?

This gives better error messages:

error: size of array ‘rtems_static_assert_msg’ is negativ

vs.

error: static assertion failed: "msg"

-- 
Sebastian Huber, embedded brains GmbH

Address : Obere Lagerstr. 30, D-82178 Puchheim, Germany
Phone   : +49 89 18 90 80 79-6
Fax     : +49 89 18 90 80 79-9
E-Mail  : sebastian.huber at embedded-brains.de
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