r257357 - [Sema] Issue a warning for integer overflow in struct initializer

[Joerg Sonnenberger via cfe-commits]

On Mon, Jan 11, 2016 at 12:28:36PM -0800, Akira Hatanaka via cfe-commits wrote:
> It triggers in dead branches and so does an initialization of an integer variable declared in a function.

I'm more interested in the case of global initialisers here. There is a
long standing history of not checking properly for dead branches, which
makes some code noisy for no good reason.

Joerg