5.8 Goto Statements
[A goto_statement specifies
an explicit transfer of control from this statement
to a target statement with a given label.]
goto_statement ::= goto label_name
Name Resolution Rules
(of a goto_statement)}
shall resolve to denote a label
; the statement
with that label
is the target statement
The innermost sequence_of_statements
that encloses the target statement shall also enclose the goto_statement.
Furthermore, if a goto_statement is enclosed
by an accept_statement or a body, then the
target statement shall not be outside this enclosing construct.
Ramification: The goto_statement
can be a statement of an inner sequence_.
It follows from the second rule that if the
target statement is enclosed by such a construct,
then the goto_statement cannot be outside.
The execution of a goto_statement
transfers control to the target statement, completing the execution of
that encloses the goto_statement
but does not enclose the target.
10 The above rules allow transfer of control
to a statement of an enclosing sequence_of_statements
but not the reverse. Similarly, they prohibit transfers of control such
as between alternatives of a case_statement,
if_statement, or select_statement;
between exception_handlers; or from an exception_handler
of a handled_sequence_of_statements back to
Example of a loop
containing a goto statement:
for I in 1 .. N-1 loop
if A(I) > A(I+1) then