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Re: max_align_t definition


On 04/09/2015 02:31 PM, Joseph Myers wrote:

> It's C90 DR#075 that requires malloc (1) to return a pointer suitably 
> aligned for all types (including long double).  (That is, all types that 
> can be defined using C90 standard syntax.)
> 
>> Before C11, this was perfectly conforming.  I doubt it was the intention
> 
> No, it was never conforming for malloc (1) to return memory not aligned 
> for long double.

Why is that so?  Is the argument that the result of malloc (1) could be
used to store a zero-length array of arbitrarily large objects (such as
long double, whose size is almost certainly larger than 1)?

-- 
Florian Weimer / Red Hat Product Security


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