chh added a comment.

In https://reviews.llvm.org/D34002#775830, @alexfh wrote:

> IIUC, when `vector<T>` (for a class `T` that has both move and copy 
> constructors) resizes, it will prefer move constructors, but only if they're 
> declared `noexcept`.  This is true even if `-fno-exceptions` is on. So I 
> don't think this check should depend on `-fno-exceptions`.


Should the compiler assume `noexcept` when -fno-exceptions is on?
That means move constructors should be preferred under -fno-exceptions, and 
this check would be unnecessary, right?


https://reviews.llvm.org/D34002



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