jfb added a comment.

In D64666#1599524 <https://reviews.llvm.org/D64666#1599524>, @ziangwan wrote:

> In D64666#1598194 <https://reviews.llvm.org/D64666#1598194>, @jfb wrote:
>
> > Thanks, the update looks good.
> >
> > One thing I just noticed: if I have a codebase with 
> > `-Wimplicit-float-conversion` it seems like updating clang will 
> > automatically turn the two new warnings on, correct? That seems good, but 
> > also difficult to roll out because I can't turns off just the two new 
> > warnings. In other words, if I want to adopt a new clang and I had 
> > `-Wimplicit-float-conversion` then the only options I have are: fix all the 
> > new warnings (which might take time given how much code I have), or turn 
> > off *all* of `-Wimplicit-float-conversion`. I think it makes sense to force 
> > fixing all warnings for the warning that's always a problem 
> > `warn_impcast_integer_float_precision_constant`, but for 
> > `warn_impcast_integer_float_precision` it would be nice if there were a 
> > `-Wno-*` which disables only `warn_impcast_integer_float_precision` and 
> > nothing else.
> >  This would make it way easier to roll out a new clang.
>
>
> Yes, you are right. I am thinking about making a new flag for the warning but 
> make "definitely lose" one default on. How about 
> `-Wimplicit-int-float-conversion`?


SGTM. It can still be a sub-warning of `-Wimplicit-float-conversion`, I just 
want to make sure we can turn it off on its own.


CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D64666/new/

https://reviews.llvm.org/D64666



_______________________________________________
cfe-commits mailing list
cfe-commits@lists.llvm.org
https://lists.llvm.org/cgi-bin/mailman/listinfo/cfe-commits

Reply via email to