Completely Defined C code of the Day #CDCD
Setting an existing struct to zero without using memset
https://godbolt.org/g/gV8Xtx pic.twitter.com/5xaNbb75K6
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Completely Defined C code of the Day #CDCD
Setting an existing struct to zero without using memset
https://godbolt.org/g/gV8Xtx pic.twitter.com/5xaNbb75K6
(memset is also good, but it lacks panache, and it doesn't work if either null pointers or 0.0 are not represented with all bits zero)
The amount of incorrect usage with mbstate_t in code and even docs...
But does it have the same effect? Looks like pad can be nonzero after assignment, but I'm not sure what can it be after memset.
No, that's the whole point. memset sets the object representation to all zero bits, but the interfaces that consume mbstate_t require zero value (padding is not part of the value and irrelevant).
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