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));
