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labelled-do-loop (OB091)

Fix is sometimes available.

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What it does

Checks for uses of the obsolescent labelled do statements.

Why is this bad?

These statements were made completely redundant with the introduction of construct names. Construct names are clearer and easier to understand, while not allowing arbitrary goto statements and other confusing

The Fortran 2018 standard made these statements obsolescent,

Example

    do 10 i = 1, 10
      foo(i) = i
10  continue

Use instead: 

   do i = 1, 10
     foo(i) = i
   end do