[Bug fortran/47659] -Wconversion[-extra] should emit warning for constant expressions

[sgk at troutmask dot apl.washington.edu]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47659

--- Comment #5 from Steve Kargl <sgk at troutmask dot apl.washington.edu> 2011-08-08 14:50:33 UTC ---
On Mon, Aug 08, 2011 at 06:07:36AM +0000, thenlich at users dot sourceforge.net
wrote:
> http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47659
> 
> --- Comment #4 from Thomas Henlich <thenlich at users dot sourceforge.net> 2011-08-08 06:07:33 UTC ---
> It is not safe to omit the warning for integers: the constant could have been
> truncated to an integer, as in:
> 
>     real(8) :: r8
>     r8 = 12345678.9
>     print *, r8
> 
> => 12345679.0000000

Technically, the above is not a truncation to integer.  The
rhs is rounded.