libavcodec/amrnbdec.c:281: error: Uninitialized Value
  The value read from lsf_r[_] was never initialized.

libavcodec/amrnbdec.c:281:9: 
279. 
280.     if (sign) {
281.         lsf_r[4] *= -1;
             ^
282.         lsf_r[5] *= -1;
283.     }

static void lsf2lsp_for_mode12k2(AMRContext *p, double lsp[LP_FILTER_ORDER],
                                 const float lsf_no_r[LP_FILTER_ORDER],
                                 const int16_t *lsf_quantizer[5],
                                 const int quantizer_offset,
                                 const int sign, const int update)
{
    int16_t lsf_r[LP_FILTER_ORDER];
    float lsf_q[LP_FILTER_ORDER];
    int i;
    for (i = 0; i < LP_FILTER_ORDER >> 1; i++)
        memcpy(&lsf_r[i << 1], &lsf_quantizer[i][quantizer_offset],
               2 * sizeof(*lsf_r));
    if (sign) {
        lsf_r[4] *= -1;
        lsf_r[5] *= -1;
    }
    if (update)
        memcpy(p->prev_lsf_r, lsf_r, LP_FILTER_ORDER * sizeof(float));
    for (i = 0; i < LP_FILTER_ORDER; i++)
        lsf_q[i] = lsf_r[i] * (LSF_R_FAC / 8000.0) + lsf_no_r[i] * (1.0 / 8000.0);
    ff_set_min_dist_lsf(lsf_q, MIN_LSF_SPACING, LP_FILTER_ORDER);
    if (update)
        interpolate_lsf(p->lsf_q, lsf_q);
    lsf2lsp(lsf_q, lsp);
}
['static void lsf2lsp_for_mode12k2(AMRContext *p, double lsp[LP_FILTER_ORDER],\n                                 const float lsf_no_r[LP_FILTER_ORDER],\n                                 const int16_t *lsf_quantizer[5],\n                                 const int quantizer_offset,\n                                 const int sign, const int update)\n{\n    int16_t lsf_r[LP_FILTER_ORDER];\n    float lsf_q[LP_FILTER_ORDER];\n    int i;\n    for (i = 0; i < LP_FILTER_ORDER >> 1; i++)\n        memcpy(&lsf_r[i << 1], &lsf_quantizer[i][quantizer_offset],\n               2 * sizeof(*lsf_r));\n    if (sign) {\n        lsf_r[4] *= -1;\n        lsf_r[5] *= -1;\n    }\n    if (update)\n        memcpy(p->prev_lsf_r, lsf_r, LP_FILTER_ORDER * sizeof(float));\n    for (i = 0; i < LP_FILTER_ORDER; i++)\n        lsf_q[i] = lsf_r[i] * (LSF_R_FAC / 8000.0) + lsf_no_r[i] * (1.0 / 8000.0);\n    ff_set_min_dist_lsf(lsf_q, MIN_LSF_SPACING, LP_FILTER_ORDER);\n    if (update)\n        interpolate_lsf(p->lsf_q, lsf_q);\n    lsf2lsp(lsf_q, lsp);\n}']