malloc some advances

                return 0;

            }

        }

        jfloat advancesArray[count];

        jfloat* advancesArray = new jfloat[count];

        jfloat totalAdvance = 0;

        TextLayout::getTextRunAdvances(paint, text, start, count, contextCount, flags,

        if (advances != NULL) {

            env->SetFloatArrayRegion(advances, advancesIndex, count, advancesArray);

        }

        delete [] advancesArray;

        return totalAdvance;

    }