[cfe-commits] Handle ExprWithCleanups when creating goto scopes

[Rafael Espíndola]

> The problem here, which I hadn't been thinking about before, is lifetime extension for temporaries. We actually have to dig into the initializer expression to find the, even when the variable type is a reference to a scalar type.

This patch uses a visitor to find the CXXConstructExpr, but it is not
clear to me all the cases where we have to stop the AST traverse.

>
>   - Doug

Cheers,
Rafael
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