Re: No distinction between COMPLEX and CMPLX in gfortran

On Mon, Dec 29, 2025 at 10:50 PM Naveen Yadav via Gcc <[email protected]> wrote:
>
> Dear developers,
>
> I am using  GNU Fortran (GCC) 15.2.1 20251211 (Red Hat 15.2.1-5):
>
> The following program:
>
> ****************************************************************************************************
> PROGRAM test
> IMPLICIT NONE
> REAL :: a = 1.0, b=1.0
> COMPLEX:: z
>
> z = COMPLEX(1.0,2.0)
> PRINT*, z
>
> z = COMPLEX(a, b)
> PRINT*, z
>
> END PROGRAM test
> ****************************************************************************************************
>
> works with gfortran. However, the Intel compiler (from oneApi) throws a
> compile error:
>
> test.f90(6): error #6404: This name does not have a type, and must have an
> explicit type.   [COMPLEX]
> z = COMPLEX(1.0,2.0)
> ----^
> compilation aborted for test.f90 (code 1)
>
> It is because COMPLEX is the name of a type and CMPLX is an intrinsic
> function. The behaviour of the Intel compiler is the correct one. I hope
> this will be updated in a future release.

See https://gcc.gnu.org/onlinedocs/gcc-15.2.0/gfortran/COMPLEX.html#index-COMPLEX
```
Standard:
GNU extension
```

Thanks,
Andrew

>
> Best regards
> Naveen Yadav