int foo(int x)
{
	int q;
	int context[128];

	printf("q is 0x%x\n",  &q);

	printf("Context is at 0x%x\n", &context[0]);
	
	if (x == 0) {
		int j;
		for (j = 0; j < sizeof(context) / sizeof(context[0]); j++) {
			printf("Context[%d]==0x%x\n", j, context[j]);
			context[j] = SENTINEL;
		}
	} else {
		int j;
		printf("***\n");
		for (j = 0; j < sizeof(context) / sizeof(context[0]); j++) {
			printf("Context[%d]==0x%x\n", j, context[j]);			
			if (context[j] != SENTINEL) {
				printf("%d 0x%x\n", j, context[j]);
			}
		}
	}
}