Missing warning

[Steve Kargl]

On Thu, Feb 28, 2019 at 12:32:31PM -0800, Steve Kargl wrote:
> > 
> > It seems that the exponential operator is not range checking
> > its result during constant folding.  The RHS side for the
> > assignment of 'i' is too large for the decimal range for 
> > a signed 32-bit integer.  The RHS of the assignment of 'x'
> > accidentally gets the intended number.
> > 
> > F2018, 10.1.5.2.4 Evaluation of numeric intrinsic operations
> > 
> >    The execution of any numeric operation whose result is not defined
> >    by the arithmetic used by the processor is prohibited. 
> > 
> > One might argument that the result for 'i' is valid Fortran
> > as 2s-complement wrap semantics may be "the arithmetic used
> > by the processor".  If that is the case, then the result for
> > 'x' is wrong.  OTOH, the infinite precision result for 10**23
> > shown in the dump as 10000000000000000000000 is outside of the
> > range of a signed 32-bit integer.  I suspect that gfortran should
> > be issuing a warning here.
> 
> LOL. It seems that I'm the guilty party for not issuing a
> warning or error.  See r145261 for details.  I have
> no idea what I was thinking 9 years ago.
> 

Comically, there is another bandage that prevent an
error message from occurring.  See r258416.

-- 
Steve