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

[sgk at troutmask dot apl dot washington dot edu]

------- Comment #20 from sgk at troutmask dot apl dot washington dot edu  2008-10-31 04:55 -------
Subject: Re:  gfortran error and ICE at automatic type conversion with transfer
intrinsic

On Fri, Oct 31, 2008 at 04:27:23AM -0000, deji_aking at yahoo dot ca wrote:
> 
> 
>> 
>> From comment 1:
>> 
>>    Adw_xabcd_8(1:n) = transfer(-1,1.0) ! Adw_xabcd_8 is REAL
>> 
>> That makes sense: One assigns NaN to a real variable (though a
>> comment would be helpful). However
>> 
> Does this mean gfortran shouldn't give an error message on the
> first part (with the real variable) of the bug report?  It seems
> the patch to fix this only deals with the integer variable assignment.
> 

No.  gfortran is giving you an error because you are trying to
convert a NaN for a REAL type to a DOUBLE PRECISION value.
This also makes no sense.  If you want a DOUBLE PRECISION
NaN, then use transfer(-1,1.d0).

The conversion code for REAL to DOUBLE PRECISION properly
handled this problem.  The patch I submitted for INTEGER
was for a code path into the REAL to INTEGER routine that
no one had ever triggered.


-- 


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