[dcbrown]

This is a linker default limitation. There is a method for supporting stacks > 256 as outlined in the MCC18 user guide, it involves merging multiple banks of registers. This seems to work for variable space too, but there may be limitations I'm unaware of. The code would need to be thoroughly reviewed and tested but this should work as I've seen it used on other PIC projects.

In the linker file, change:

DATABANK   NAME=gpr6       START=0x600          END=0x6FF
DATABANK   NAME=gpr7       START=0x700          END=0x7FF

to 

DATABANK   NAME=gpr6       START=0x600          END=0x7FF
//DATABANK   NAME=gpr7       START=0x700          END=0x7FF

This merges two banks into one available segment. There are run-time costs associated with doing this so it isn't recommended practice.

I built three int [11][5] arrays and got the same linker error. Then I merged the banks and did it again and it will link. I poked at some of the arrays with C code and looked at the machine code -- it looks correct.

int vars1[11][5];
int vars2[11][5];
int vars3[11][5];
void testtest1( void )
{
static int var;
static int *ptr;
static int row,col;

    var = vars1[4][3];
    var = vars2[8][4];
376:                   var = vars3[3][1];
 05762    C6FF     MOVFF 0x6ff, 0x74d
 05764    F74D     NOP
 05766    C700     MOVFF 0x700, 0x74e
 05768    F74E     NOP
377:                   var = vars3[3][2];
 0576A    C701     MOVFF 0x701, 0x74d
 0576C    F74D     NOP
 0576E    C702     MOVFF 0x702, 0x74e
 05770    F74E     NOP

    var = vars3[6][2];
    for (row=0; row<11; row++)
        for (col=0; col<5; col++)
            var = vars2[row][col];
    ptr = &vars3[0][0];
    var = *ptr++;
}