Other places in the GIR file, if a variable is an array, the <array length="x"> tag uses x to indicate the number of dimensions of that variable.  In this case, the input parameter for a method only get a tag where x=1, even for 2D and higher arrays.  Furthermore, it lists the incorrect number of input parameters, "a_length2" is not present, nor is "result_length2" for the return value.


Vala code from an object:

public float[,] nd_test(float[,] a){
    return a;
}



Function def in header file:

gfloat* foo_input_buffer_nd_test (fooInputBuffer* self, gfloat* a, int a_length1, int a_length2, int* result_length1, int* result_length2);



GIR entry:

<method name="nd_test" c:identifier="foo_input_buffer_nd_test">
	<return-value transfer-ownership="full">
		<array length="2">
			<type name="gfloat" c:type="gfloat"/>
		</array>
	</return-value>
	<parameters>
		<parameter name="a" transfer-ownership="none">
			<array length="1">
				<type name="gfloat" c:type="gfloat"/>
			</array>
		</parameter>
		<parameter name="a_length1" transfer-ownership="none">
			<type name="gint" c:type="gint"/>
		</parameter>
		<parameter name="result_length1" direction="out" transfer-ownership="none">
			<type name="gint" c:type="gint*"/>
		</parameter>
	</parameters>
</method>

I believe the parameter should read <array length="2"> (as it does for the return-value) and there should be additional parameters a_length2 and return_length2.