[rtdef] RT_IS_ALIGN marco add a null address exclusive
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@ -393,8 +393,9 @@ typedef int (*init_fn_t)(void);
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* Return true(1) or false(0).
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* RT_IS_ALIGN(128, 4) is judging whether 128 aligns with 4.
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* The result is 1, which means 128 aligns with 4.
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* @note If the address is NULL, false(0) will be returned
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*/
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#define RT_IS_ALIGN(addr, align) (!(addr & (align - 1)))
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#define RT_IS_ALIGN(addr, align) ((!(addr & (align - 1))) && (addr != RT_NULL))
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/**
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* @ingroup BasicDef
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