bug: test_interpolate_range incorrectly outputting an integer type for various interp_test variables

[achauphan]

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Describe the bug

test_interpolate_range function in test_interpolate_threed_sphere.f90 attempts to output an integer type for the following interp_test variables which are all defined as real(r8):

• interp_test_dlon
• interp_test_dlat
• interp_test_dvert

1. List the steps someone needs to take to reproduce the bug.
   Run test 5 of model_mod_check
2. What was the expected outcome?
   The output for test 5 of model_mod_check correctly outputting the values of the three interp_test variables
3. What actually happened?
   model_mod_check crashes after attempting to output.

Error Message

Please provide any error messages.

At line 124 of file /DART/models/model_mod_tools/test_interpolate_threed_sphere.f90 (unit = 6, file = 'stdout')
Fortran runtime error: Expected INTEGER for item 2 in formatted transfer, got REAL
(A,I2)
   ^

Which model(s) are you working with?

A new pathological testing model.

Screenshots

If applicable, add screenshots to help explain your problem.
The culprit lines of code:

if ((interp_test_dlon < 0.0_r8) .or. (interp_test_dlat < 0.0_r8)) then
   if ( do_output() ) then
      write(*,'(A)')    'Skipping the rigorous interpolation test because one of'
      write(*,'(A)')    'interp_test_dlon,interp_test_dlat are < 0.0'
      write(*,'(A,I2)') 'interp_test_dlon  = ',interp_test_dlon
      write(*,'(A,I2)') 'interp_test_dlat  = ',interp_test_dlat
      write(*,'(A,I2)') 'interp_test_dvert = ',interp_test_dvert
   endif
   return
endif

Version of DART

Which version of DART are you using?
You can find the version using git describe --tags
v10.5.5-159-g27b5a675c

Have you modified the DART code?

Yes/No
If your code changes are available on GitHub, please provide the repository.
Yes
To reproduce, take the following commit from the panda_models branch:
achauphan@8ed5a96

Build information

Please describe:

1. The machine you are running on (e.g. windows laptop, NCAR supercomputer Cheyenne).
   Ubuntu WSL2 environment on a Windows 11 Laptop
2. The compiler you are using (e.g. gnu, intel).
   gnu

[hkershaw-brown]

DART/models/model_mod_tools/test_interpolate_threed_sphere.f90

Line 124 in 502af78

write(*,'(A,I2)') 'interp_test_dlon = ',interp_test_dlon

[hkershaw-brown]

@achauphan which version of gfortran are you seeing this with?

gfortran --version