Syntax does not parse variable declarations like REAL A / 1.0 /

[lsafina]

Test:

        REAL  A / 1.0 /
        END

Syntax output:

        REAL  A / 1.0 /
	        ^
test/evref/real-declaration.FOR, line 1: column 17: Error:	"( %symbolic_name" is inserted before "/".

        REAL  A / 1.0 /
		  ^
test/evref/real-declaration.FOR, line 1: column 19: Error:	"1.0" is replaced by "%symbolic_name".

        REAL  A / 1.0 /
		       ^
test/evref/real-declaration.FOR, line 1: column 24: Error:	"%symbolic_name )" is inserted before "%EOL".

As a result wrong json:

{
    "tag": "fortran_file",
    "comments":
    {},
    "file": "test/evref/real-declaration.FOR",
    "program_units":
    [
        {
            "tag": "main",
            "name": "null",
            "prog_unit_parameters":
            [],
            "start_pos":
            {
                "line": "1",
                "column": "9"
            },
            "end_pos":
            {
                "line": "2",
                "column": "11"
            },
            "statement_list":
            [
                {
                    "tag": "variable_declaration_statement",
                    "start_pos":
                    {
                        "line": "1",
                        "column": "9"
                    },
                    "type":
                    {
                        "tag": "type_reference",
                        "start_pos":
                        {
                            "line": "1",
                            "column": "9"
                        },
                        "name": "REAL"
                    },
                    "declarators":
                    [
                        {
                            "tag": "variable_declarator",
                            "start_pos":
                            {
                                "line": "1",
                                "column": "15"
                            },
                            "variable":
                            {
                                "tag": "symbolic_name",
                                "start_pos":
                                {
                                    "line": "1",
                                    "column": "15"
                                },
                                "name": "A"
                            },
                            "dimension_declarators":
                            [
                                {
                                    "tag": "dimension_declarator",
                                    "start_pos":
                                    {
                                        "line": "1",
                                        "column": "17"
                                    },
                                    "upper_bound":
                                    {
                                        "tag": "binary_expression",
                                        "start_pos":
                                        {
                                            "line": "1",
                                            "column": "17"
                                        },
                                        "lhs":
                                        {
                                            "tag": "binary_expression",
                                            "start_pos":
                                            {
                                                "line": "1",
                                                "column": "17"
                                            },
                                            "lhs":
                                            {
                                                "tag": "variable_expression",
                                                "variable":
                                                {
                                                    "tag": "symbolic_name",
                                                    "start_pos":
                                                    {
                                                        "line": "1",
                                                        "column": "17"
                                                    },
                                                    "name": ""
                                                }
                                            },
                                            "operator":
                                            {
                                                "tag": "arithmetic_operator",
                                                "start_pos":
                                                {
                                                    "line": "1",
                                                    "column": "17"
                                                },
                                                "operator_value": "/"
                                            },
                                            "rhs":
                                            {
                                                "tag": "variable_expression",
                                                "variable":
                                                {
                                                    "tag": "symbolic_name",
                                                    "start_pos":
                                                    {
                                                        "line": "1",
                                                        "column": "19"
                                                    },
                                                    "name": ""
                                                }
                                            }
                                        },
                                        "operator":
                                        {
                                            "tag": "arithmetic_operator",
                                            "start_pos":
                                            {
                                                "line": "1",
                                                "column": "23"
                                            },
                                            "operator_value": "/"
                                        },
                                        "rhs":
                                        {
                                            "tag": "variable_expression",
                                            "variable":
                                            {
                                                "tag": "symbolic_name",
                                                "start_pos":
                                                {
                                                    "line": "1",
                                                    "column": "24"
                                                },
                                                "name": ""
                                            }
                                        }
                                    }
                                }
                            ]
                        }
                    ]
                }
            ]
        }
    ]
}

[lsafina]

Not clear if it is an extension or not.

Oracle writes: You can define a variable with an assignment statement, an input statement, or a DATA statement. If a variable is assigned a value in a DATA statement, then it is initially defined..

However, oracle uses examples with such initialisation in slashes everywhere without mentioning that it is an extension, e.g
https://docs.oracle.com/cd/E19957-01/805-4939/z40007437a27/index.html
https://docs.oracle.com/cd/E19957-01/805-4939/6j4m0vn6m/index.html