Allowing character literals to be used in a similar way to Hollerith constants
is a non-standard extension. This feature is enabled using
-fdec-char-conversions and only applies to character literals of kind=1.
Character literals can be used in DATA statements and assignments with
numeric (INTEGER, REAL, or COMPLEX) or LOGICAL
variables. Like Hollerith constants they are copied byte-wise fashion. The
constant will be padded with spaces or truncated to fit the size of the
variable in which it is stored.
Examples:
integer*4 x
data x / 'abcd' /
x = 'A' ! Will be padded.
x = 'ab1234' ! Will be truncated.