96d693619f48a2f0ee2a5781e387d900976a01cd,brian2/stateupdaters/exact.py,LinearStateUpdater,__call__,#LinearStateUpdater#Any#Any#,238

Before Change

        t = Symbol("t", real=True, positive=True)
        symbols = set.union(*(el.atoms() for el in matrix))
        non_constant = _non_constant_symbols(symbols, variables, t)
        if len(non_constant):
            raise ValueError(("The coefficient matrix for the equations "
                              "contains the symbols %s, which are not "
                              "constant.") % str(non_constant))

        // Check for time dependence
        if "dt" in variables:
            dt_value = variables["dt"].get_value()[0]
            // This will raise an error if we meet the symbol "t" anywhere
            // except as an argument of a locally constant function

After Change

            // This will raise an error if we meet the symbol "t" anywhere
            // except as an argument of a locally constant function
            t = Symbol("t", real=True, positive=True)
            for entry in itertools.chain(matrix, constants):
                _check_for_locally_constant(entry, variables, dt_value, t)

        symbols = [Symbol(variable, real=True) for variable in varnames]

Instances