[RFC] PR libstdc++/9548 vs DR 231 (Ready)

[Paolo Carlini]

Hi,

this interesting report is about the following weird situation, which 
triggers a bug in the current v3: (flags & fixed) != 0 && 
str.precision() < 0.

It would be easy to fix the specific bug, but I noted DR 231, in the 
Ready state, which is exactly about 22.2.2.2.2 p11. In my understanding 
we agreed that, in general, Ready DRs should be implemented ASAP and 
implementing DR 231, in fact, seems quite easy too.

However, in these specific circumstances, I'm a bit worried since the 
output of float numbers in many different formats is going to change: a 
big impact on the behaviour of _many_ programs!

Do we all agree that implementing DR 231 is the best thing to do?

Paolo.