OBS002 equivalence-statement

warning enabled by default

An equivalence statement.

Why

equivalence makes different variables share storage, defeating type checking and optimisation (aliasing). It is obsolescent since Fortran 2018. Use transfer, pointers, or separate variables.

Reported

equivalence (a, b)

Preferred

b = transfer(a, b)

Suppressing

For one occurrence, with the reason on the same line (or alone on the line before the statement):

! fobis: ignore[OBS002] <why this occurrence is fine>

For the whole project, ignore = OBS002 in the fobos [lint] section.

Equivalent

Fortitude rule OB012 (see Lint Rules).