On Mon, 18 Jan 2016, Jonathan Wakely wrote:
This fixes PR60637 by using the appropriate built-in for the size of the argument type. In Bugzilla Marc asked why we don't just use the same code as for C++11, but I want to make this less intrusive change on the branches (trunk is already OK anyway).
That's fine for the branch indeed, but I don't see why we couldn't remove that illegal signbit declaration on trunk in C++98 mode. It works but it is still wrong to have it. Now that C++14 is the default, explicitly asking for C++98 looks like a clear sign to me that people don't want such extensions.
-- Marc Glisse
