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)
