[Wien] Intels Oneapi 2024: Compiler bug ?

[Jan Doumont]

Dear Peter,

Interestingly, I get the same error when using IFORT with the newest 
oneapi...

ifort  -O -FR -mp1 -w -prec_div -pc80 -pad -ip -DINTEL_VML -traceback 
-assume buffered_io -I/opt/intel/oneapi/mkl/2024.0/include 
-DHAVE_PTR_ALLOC_GENERICS  -Ilib -free -gen-interface nosource 
-traceback -g  -I../SRC_w2w/lib -I../SRC_w2w/lib -c modules.f 
-olib/modules.o -module lib
ifort: remark #10448: Intel(R) Fortran Compiler Classic (ifort) is now 
deprecated and will be discontinued late 2024. Intel recommends that 
customers transition now to using the LLVM-based Intel(R) Fortran 
Compiler (ifx) for continued Windows* and Linux* support, new language 
support, new language features, and optimizations. Use 
'-diag-disable=10448' to disable this message.
modules.f(195): error #6911: The syntax of this substring is invalid.   
[CART]
        inw%grid%len = (/ ( sqrt(sum( inw%grid%Cart(:,i)**2 )), i=1,3 ) /)
----------------------------------------------^
compilation aborted for modules.f (code 1)
make: *** [Makefile:140: lib/modules.o] Error 1

However, I found the following workaround works with both ifort and ifx 
on oneapi 2024:

        do i=1,3
           inw%grid%len(i) = sqrt(sum(inw%grid%cart(:,i)**2 ))
        end do

i.e. to replace the implicit loop by an explicit one.

BW
Jan Doumont

On 25/01/2024 19:52, Jan Doumont wrote:
> Dear Peter,
>
> I could compile wien2k 23.2 with no issues using gfortran 13.2.1 (the 
> version supplied with Fedora 39). I double checked the compile.msg of 
> SRC_wplot and there are no errors.
>
> Best Wishes
>
> Jan Doumont
>
>
>
> On 25/01/2024 19:00, Peter Blaha wrote:
>> Dear users,
>>
>> Maybe there is a Fortran expert who knows if this syntax is correct 
>> or not.
>>
>> A user reported recently a compilation problem using   the most 
>> recent ifort (or ifx, which will become soon the new fortran 
>> compiler) (oneapi-2024.0)   in SRC_wplot:
>>
>> ifx -O -FR -mp1 -w -prec_div -pc80 -pad -ip -DINTEL_VML -traceback 
>> -assume buffered_io -I/home/aarav/intel/mkl/2024.0/include 
>> -DHAVE_PTR_ALLOC_GENERICS -Ilib -free -gen-interface nosource 
>> -traceback -g -I../SRC_w2w/lib -I../SRC_w2w/lib -c modules.f 
>> -olib/modules.o -module lib
>> modules.f(195): error #6911: The syntax of this substring is invalid. 
>> [CART]
>>        inw%grid%len = (/( sqrt(sum( inw%grid%Cart(:,i)**2 )), i=1,3 )/)
>> ---------------------------------------------^
>>
>> So the error is in line 195 of SRC_wplot/modules.f.
>>
>> It appear ONLY with the most recent oneapi 2024.0, not with older 
>> versions nor with gfortran-12.
>>
>> Thus the question is: Is this a compiler bug or is this due to a very 
>> new fortran-standard which this version enforces ?
>> Has anybody an even newer gfortran (higher than version 12) and can 
>> test it with this compiler ?
>>
>> Best regards
>> Peter Blaha
>
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