On Thu, 27 Jul 2023, Jerry D wrote:

> On 7/27/23 1:36 PM, Allin Cottrell via Fortran wrote:
>> I have old fortran source code (not my own work) for a specialized 
>> statistical program that I and others find quite useful.
>> 
>> A few years ago I was able to compile it on Linux using gfortran with 
>> std=legacy (and also cross-compile it for Windows an Mac). Now I'd like to 
>> rebuild it, but with recent gfortran (I've tried 12.2.1 on Fedora and 
>> 13.1.1 on Arch) it's a no-go. I get lots of errors of the following sort:
>> 
>> ansub9.f:151:44:
>>
>>    151 |    INTEGER ITYPE,INIT,LAM,IMEAN,IP,ID,Q,BP,BD,BQ,SQG,MQ,L,M,
>>        |                                       1
>> Error: Symbol ‘q’ at (1) already has basic type of REAL
>> 
>> I can understand this complaint. The code contains this sort of thing 
>> within a given subroutine:
>>
>>         IMPLICIT  REAL*8 (A-H,O-Z)
>
> Have you considered replacing the above line with IMPLICIT NONE and add 
> explicit declarations as needed? The code will be safer in the long run.

That would be a good solution, for sure, but I don't think I 
understand the original code well enough to make the required 
changes.

Meanwhile, though, Steve Kargl has suggested a nice fix which just 
involved moving one block of the code.

Allin Cottrell