GCC selftest improvements

[Pedro Alves]

On 10/26/19 11:46 PM, Eric Gallager wrote:

> Nicholas Krause was also wanting to move to C++11 recently:
> https://gcc.gnu.org/ml/gcc/2019-10/msg00110.html (this month)
> https://gcc.gnu.org/ml/gcc/2019-09/msg00228.html (last month)
> As I said in that thread, I'd want to try just toggling -Wnarrowing
> from off to on first before going full C++11. 

Why?  GDB went the other way when it moved to C++11.  It switched
to C++11, and for several months, used -Wno-narrowing to quiet
the thousands of warnings.

https://gcc.gnu.org/wiki/FAQ#Wnarrowing

> So, GCC 10 would be
> C++98 + -Wnarrowing, and then GCC 11 could be full C++11. Plus then
> the GCC version numbers would also line up with the version of C++
> being used.

Thanks,
Pedro Alves