libavcodec/h264idct.c:246: error: Uninitialized Value
  The value read from temp[_] was never initialized.

libavcodec/h264idct.c:246:9: 
244.         const int z1= temp[4*0+i] - temp[4*2+i];
245.         const int z2= temp[4*1+i] - temp[4*3+i];
246.         const int z3= temp[4*1+i] + temp[4*3+i];
             ^
247. 
248.         output[stride* 0+offset]= ((((z0 + z3)*qmul + 128 ) >> 8));

void ff_h264_luma_dc_dequant_idct_c(DCTELEM *output, DCTELEM *input, int qmul){
#define stride 16
    int i;
    int temp[16];
    static const uint8_t x_offset[4]={0, 2*stride, 8*stride, 10*stride};
    for(i=0; i<4; i++){
        const int z0= input[4*i+0] + input[4*i+1];
        const int z1= input[4*i+0] - input[4*i+1];
        const int z2= input[4*i+2] - input[4*i+3];
        const int z3= input[4*i+2] + input[4*i+3];
        temp[4*i+0]= z0+z3;
        temp[4*i+1]= z0-z3;
        temp[4*i+2]= z1-z2;
        temp[4*i+3]= z1+z2;
    }
    for(i=0; i<4; i++){
        const int offset= x_offset[i];
        const int z0= temp[4*0+i] + temp[4*2+i];
        const int z1= temp[4*0+i] - temp[4*2+i];
        const int z2= temp[4*1+i] - temp[4*3+i];
        const int z3= temp[4*1+i] + temp[4*3+i];
        output[stride* 0+offset]= ((((z0 + z3)*qmul + 128 ) >> 8));
        output[stride* 1+offset]= ((((z1 + z2)*qmul + 128 ) >> 8));
        output[stride* 4+offset]= ((((z1 - z2)*qmul + 128 ) >> 8));
        output[stride* 5+offset]= ((((z0 - z3)*qmul + 128 ) >> 8));
    }
#undef stride
}
['void ff_h264_luma_dc_dequant_idct_c(DCTELEM *output, DCTELEM *input, int qmul){\n#define stride 16\n    int i;\n    int temp[16];\n    static const uint8_t x_offset[4]={0, 2*stride, 8*stride, 10*stride};\n    for(i=0; i<4; i++){\n        const int z0= input[4*i+0] + input[4*i+1];\n        const int z1= input[4*i+0] - input[4*i+1];\n        const int z2= input[4*i+2] - input[4*i+3];\n        const int z3= input[4*i+2] + input[4*i+3];\n        temp[4*i+0]= z0+z3;\n        temp[4*i+1]= z0-z3;\n        temp[4*i+2]= z1-z2;\n        temp[4*i+3]= z1+z2;\n    }\n    for(i=0; i<4; i++){\n        const int offset= x_offset[i];\n        const int z0= temp[4*0+i] + temp[4*2+i];\n        const int z1= temp[4*0+i] - temp[4*2+i];\n        const int z2= temp[4*1+i] - temp[4*3+i];\n        const int z3= temp[4*1+i] + temp[4*3+i];\n        output[stride* 0+offset]= ((((z0 + z3)*qmul + 128 ) >> 8));\n        output[stride* 1+offset]= ((((z1 + z2)*qmul + 128 ) >> 8));\n        output[stride* 4+offset]= ((((z1 - z2)*qmul + 128 ) >> 8));\n        output[stride* 5+offset]= ((((z0 - z3)*qmul + 128 ) >> 8));\n    }\n#undef stride\n}']