[Bug fortran/37930] gfortran error and ICE at automatic type conversion with transfer intrinsic

[sgk at troutmask dot apl dot washington dot edu]

------- Comment #6 from sgk at troutmask dot apl dot washington dot edu  2008-10-28 14:03 -------
Subject: Re:  gfortran error and ICE at automatic type conversion with transfer
intrinsic

On Tue, Oct 28, 2008 at 01:30:28PM -0000, dominiq at lps dot ens dot fr wrote:
> 
> ------- Comment #5 from dominiq at lps dot ens dot fr  2008-10-28 13:30 -------
> On *-Darwin9 I get:
> 
>       i = transfer(-1,1.0)
>          1
> Error: Arithmetic overflow converting REAL(4) to INTEGER(4) at (1). This check
> can be disabled with the option -fno-range-check

What does 

    program test
    print *, transfer(-1,1.0)
    end program test

print?

> I have not tested the patch in
> http://gcc.gnu.org/ml/gcc-patches/2008-10/msg01183.html, but I am afraid that
> it will just hide the bug.

The actual bug is in the Fortran code!  My patch simply fixes the
ICE in gfortran.  By itself, transfer(-1,1.0) is valid and it so
happens to be an NaN.  i = NaN is invalid (although I doubt the
standard will actually say i = NaN is invalid in a straight forward
manner).


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=37930