void jas_matrix_bindsub(jas_matrix_t *mat0, jas_matrix_t *mat1,
  jas_matind_t r0, jas_matind_t c0, jas_matind_t r1, jas_matind_t c1)
{
	jas_matind_t i;

	if (mat0->data_) {
		if (!(mat0->flags_ & JAS_MATRIX_REF)) {
			jas_free(mat0->data_);
		}
		mat0->data_ = 0;
		mat0->datasize_ = 0;
	}
	if (mat0->rows_) {
		jas_free(mat0->rows_);
		mat0->rows_ = 0;
	}
	mat0->flags_ |= JAS_MATRIX_REF;
	mat0->numrows_ = r1 - r0 + 1;
	mat0->numcols_ = c1 - c0 + 1;
	mat0->maxrows_ = mat0->numrows_;
	if (!(mat0->rows_ = jas_alloc2(mat0->maxrows_, sizeof(jas_seqent_t *)))) {
		/*
			There is no way to indicate failure to the caller.
			So, we have no choice but to abort.
			Ideally, this function should have a non-void return type.
			In practice, a non-void return type probably would not help
			much anyways as the caller would just have to terminate anyways.
		*/
		abort();
	}

	for (i = 0; i < mat0->numrows_; ++i) {
		mat0->rows_[i] = mat1->rows_[r0 + i] + c0;
	}

	mat0->xstart_ = mat1->xstart_ + c0;
	mat0->ystart_ = mat1->ystart_ + r0;
	mat0->xend_ = mat0->xstart_ + mat0->numcols_;
	mat0->yend_ = mat0->ystart_ + mat0->numrows_;
}
The software performs a calculation that can produce an integer overflow or wraparound, when the logic assumes that the resulting value will always be larger than the original value. This can introduce other weaknesses when the calculation is used for resource management or execution control.