libavcodec/lpc.h:92: error: Uninitialized Value
  The value read from err was never initialized.

libavcodec/lpc.h:92:21: 
90.         }
91. 
92.         if (fail && err < 0)
                        ^
93.             return -1;
94. 

static inline int compute_lpc_coefs(const LPC_TYPE *autoc, int max_order,
                                    LPC_TYPE *lpc, int lpc_stride, int fail,
                                    int normalize)
{
    int i, j;
    LPC_TYPE err;
    LPC_TYPE *lpc_last = lpc;
    if (normalize)
        err = *autoc++;
    if (fail && (autoc[max_order - 1] == 0 || err <= 0))
        return -1;
    for(i=0; i<max_order; i++) {
        LPC_TYPE r = -autoc[i];
        if (normalize) {
            for(j=0; j<i; j++)
                r -= lpc_last[j] * autoc[i-j-1];
            r /= err;
            err *= 1.0 - (r * r);
        }
        lpc[i] = r;
        for(j=0; j < (i+1)>>1; j++) {
            LPC_TYPE f = lpc_last[    j];
            LPC_TYPE b = lpc_last[i-1-j];
            lpc[    j] = f + r * b;
            lpc[i-1-j] = b + r * f;
        }
        if (fail && err < 0)
            return -1;
        lpc_last = lpc;
        lpc += lpc_stride;
    }
    return 0;
}
['static inline int compute_lpc_coefs(const LPC_TYPE *autoc, int max_order,\n                                    LPC_TYPE *lpc, int lpc_stride, int fail,\n                                    int normalize)\n{\n    int i, j;\n    LPC_TYPE err;\n    LPC_TYPE *lpc_last = lpc;\n    if (normalize)\n        err = *autoc++;\n    if (fail && (autoc[max_order - 1] == 0 || err <= 0))\n        return -1;\n    for(i=0; i<max_order; i++) {\n        LPC_TYPE r = -autoc[i];\n        if (normalize) {\n            for(j=0; j<i; j++)\n                r -= lpc_last[j] * autoc[i-j-1];\n            r /= err;\n            err *= 1.0 - (r * r);\n        }\n        lpc[i] = r;\n        for(j=0; j < (i+1)>>1; j++) {\n            LPC_TYPE f = lpc_last[    j];\n            LPC_TYPE b = lpc_last[i-1-j];\n            lpc[    j] = f + r * b;\n            lpc[i-1-j] = b + r * f;\n        }\n        if (fail && err < 0)\n            return -1;\n        lpc_last = lpc;\n        lpc += lpc_stride;\n    }\n    return 0;\n}']