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:)

Currently new to the Fortran language, I am currently on a question of migration from Fortran 90 to Fortran 2003, where a p1 pointer containing itself a p2 pointer generates the error message undefined when calling the ALLOCATE instruction reference for pointer p2. The two pointers are declared as follows: Within the struct_ames.f90 file: type(grid_ames), dimension(:), pointer::grids_ames=>null() Within the grid_ames.f90 file: CHARACTER(LEN=50),DIMENSION(:,:),pointer:: arrMeasurements=>null()

Do you know how to solve this problem or which contact to request?

Thanking you for your attention to this request,

The code compiled fine with a version 13.1 compiler, but not with the new version 21 compiler.

The error message is: undefined reference to grid_ames_mod_grid_ames_td_'`

user19337642
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  • For any concrete advice we will need to see a complete example ([mre]) and you will have to show how you are compiling. – francescalus Nov 19 '22 at 18:56
  • Any source which has `type(grid_ames), dimension(:), pointer::grids_ames=>null()` is not Fortran 90 code, and most Fortran 90 source is Fortran 2003 source. – francescalus Nov 19 '22 at 18:59

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