[Bug c++/90205] Wformat-signedness detects %d and suggests %d fixit hint

egallager at gcc dot gnu.org gcc-bugzilla@gcc.gnu.org
Tue Apr 23 20:16:00 GMT 2019


https://gcc.gnu.org/bugzilla/show_bug.cgi?id=90205

Eric Gallager <egallager at gcc dot gnu.org> changed:

           What    |Removed                     |Added
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                 CC|                            |egallager at gcc dot gnu.org

--- Comment #7 from Eric Gallager <egallager at gcc dot gnu.org> ---
(In reply to Jonny Grant from comment #6)
> Wondering if it is also worth the message making clear the type was promoted?
> 
> eg:
> 
> <source>:5:14: warning: format '%d' expects argument of type 'int', but
> argument 2 has type 'float' automatically promoted to 'double', for which
> '%f' is required [-Wformat=]
> 
>     5 |     printf("%d", i);
>       |             ~^   ~
>       |              |   |
>       |              int float
>       |             %f

Maybe, but the message would be getting pretty long by that point...


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