Fortran deployment failure: diagnosing implicit typing default and STOP semantics ambiguity

Fortran deployment failure: diagnosing implicit typing default and STOP semantics ambiguity

The deployment logs for a Fortran application show a failure that may be caused by the implicit typing default, which assumes INTEGER*4 for literal constants unless explicitly declared.

The relevant compiler flag or source‑file directive that sets this default is not evident in the logs, and the termination semantics of the STOP statement are implementation‑defined, creating ambiguity in diagnosing the failure.

Which compiler flag or source directive determines the implicit INTEGER*4 default? How does the STOP statement termination semantics differ across Fortran implementations, and which is relevant for log analysis? Is the undefined deallocation timing of allocatable arrays contributing to the deployment failure?