libavcodec/h264pred.c:318: error: Uninitialized Value
  The value read from l3 was never initialized.

libavcodec/h264pred.c:318:5: 
316.     LOAD_DOWN_LEFT_EDGE
317. 
318.     pred4x4_vertical_left_rv40(src, topright, stride, l0, l1, l2, l3, l4);
         ^
319. }
320. 

static void pred4x4_vertical_left_rv40_c(uint8_t *src, uint8_t *topright, int stride){
    LOAD_LEFT_EDGE
    LOAD_DOWN_LEFT_EDGE
    pred4x4_vertical_left_rv40(src, topright, stride, l0, l1, l2, l3, l4);
}
['static void pred4x4_vertical_left_rv40_c(uint8_t *src, uint8_t *topright, int stride){\n    LOAD_LEFT_EDGE\n    LOAD_DOWN_LEFT_EDGE\n    pred4x4_vertical_left_rv40(src, topright, stride, l0, l1, l2, l3, l4);\n}']