libswscale/swscale.c:1001: error: Uninitialized Value
  The value read from A1 was never initialized.

libswscale/swscale.c:1001:5: 
 999. {
1000.     int i;
1001.     YSCALE_YUV_2_ANYRGB_C(YSCALE_YUV_2_RGBX_C, YSCALE_YUV_2_PACKEDX_C(void,0), YSCALE_YUV_2_GRAY16_C, YSCALE_YUV_2_MONOX_C)
          ^
1002. }
1003. 

static inline void yuv2packedXinC(SwsContext *c, const int16_t *lumFilter, const int16_t **lumSrc, int lumFilterSize,
                                  const int16_t *chrFilter, const int16_t **chrSrc, int chrFilterSize,
                                  const int16_t **alpSrc, uint8_t *dest, int dstW, int y)
{
    int i;
    YSCALE_YUV_2_ANYRGB_C(YSCALE_YUV_2_RGBX_C, YSCALE_YUV_2_PACKEDX_C(void,0), YSCALE_YUV_2_GRAY16_C, YSCALE_YUV_2_MONOX_C)
}
['static inline void yuv2packedXinC(SwsContext *c, const int16_t *lumFilter, const int16_t **lumSrc, int lumFilterSize,\n                                  const int16_t *chrFilter, const int16_t **chrSrc, int chrFilterSize,\n                                  const int16_t **alpSrc, uint8_t *dest, int dstW, int y)\n{\n    int i;\n    YSCALE_YUV_2_ANYRGB_C(YSCALE_YUV_2_RGBX_C, YSCALE_YUV_2_PACKEDX_C(void,0), YSCALE_YUV_2_GRAY16_C, YSCALE_YUV_2_MONOX_C)\n}']