libswscale/swscale_template.c:136: error: Uninitialized Value
  The value read from A2 was never initialized.

libswscale/swscale_template.c:136:9: 
134. 
135.     if (uvalpha < 2048) {
136.         YSCALE_YUV_2_ANYRGB_C(YSCALE_YUV_2_RGB1_C, YSCALE_YUV_2_PACKED1_C(void,0), YSCALE_YUV_2_GRAY16_1_C, YSCALE_YUV_2_MONO2_C)
             ^
137.     } else {
138.         YSCALE_YUV_2_ANYRGB_C(YSCALE_YUV_2_RGB1B_C, YSCALE_YUV_2_PACKED1B_C(void,0), YSCALE_YUV_2_GRAY16_1_C, YSCALE_YUV_2_MONO2_C)

static inline void yuv2packed1_c(SwsContext *c, const uint16_t *buf0,
                                 const uint16_t *uvbuf0, const uint16_t *uvbuf1,
                                 const uint16_t *abuf0, uint8_t *dest, int dstW,
                                 int uvalpha, enum PixelFormat dstFormat,
                                 int flags, int y)
{
    const int yalpha1=0;
    int i;
    const uint16_t *buf1= buf0;
    const int yalpha= 4096;
    if (flags&SWS_FULL_CHR_H_INT) {
        c->yuv2packed2(c, buf0, buf0, uvbuf0, uvbuf1, abuf0, abuf0, dest, dstW, 0, uvalpha, y);
        return;
    }
    if (uvalpha < 2048) {
        YSCALE_YUV_2_ANYRGB_C(YSCALE_YUV_2_RGB1_C, YSCALE_YUV_2_PACKED1_C(void,0), YSCALE_YUV_2_GRAY16_1_C, YSCALE_YUV_2_MONO2_C)
    } else {
        YSCALE_YUV_2_ANYRGB_C(YSCALE_YUV_2_RGB1B_C, YSCALE_YUV_2_PACKED1B_C(void,0), YSCALE_YUV_2_GRAY16_1_C, YSCALE_YUV_2_MONO2_C)
    }
}
['static inline void yuv2packed1_c(SwsContext *c, const uint16_t *buf0,\n                                 const uint16_t *uvbuf0, const uint16_t *uvbuf1,\n                                 const uint16_t *abuf0, uint8_t *dest, int dstW,\n                                 int uvalpha, enum PixelFormat dstFormat,\n                                 int flags, int y)\n{\n    const int yalpha1=0;\n    int i;\n    const uint16_t *buf1= buf0;\n    const int yalpha= 4096;\n    if (flags&SWS_FULL_CHR_H_INT) {\n        c->yuv2packed2(c, buf0, buf0, uvbuf0, uvbuf1, abuf0, abuf0, dest, dstW, 0, uvalpha, y);\n        return;\n    }\n    if (uvalpha < 2048) {\n        YSCALE_YUV_2_ANYRGB_C(YSCALE_YUV_2_RGB1_C, YSCALE_YUV_2_PACKED1_C(void,0), YSCALE_YUV_2_GRAY16_1_C, YSCALE_YUV_2_MONO2_C)\n    } else {\n        YSCALE_YUV_2_ANYRGB_C(YSCALE_YUV_2_RGB1B_C, YSCALE_YUV_2_PACKED1B_C(void,0), YSCALE_YUV_2_GRAY16_1_C, YSCALE_YUV_2_MONO2_C)\n    }\n}']