shithub: dav1d

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checkasm: cdef: Don't use uninitialized buffer contents for the test

This makes sure the test actually is deterministic based on the
seed value.

--- a/tests/checkasm/cdef.c

+++ b/tests/checkasm/cdef.c

@@ -53,9 +53,6 @@

     if (check_func(fn, "%s_%dbpc", name, BITDEPTH)) {

         for (int dir = 0; dir < 8; dir++) {

             for (enum CdefEdgeFlags edges = 0; edges <= 0xf; edges++) {

-                memcpy(a_src, src, (10 * 16 + 8) * sizeof(pixel));

-                memcpy(c_src, src, (10 * 16 + 8) * sizeof(pixel));

-

 #if BITDEPTH == 16

                 const int bitdepth_max = rnd() & 1 ? 0x3ff : 0xfff;

 #else

@@ -65,6 +62,9 @@

                 init_tmp(src, 10 * 16 + 8, bitdepth_max);

                 init_tmp(top, 16 * 2 + 8, bitdepth_max);

                 init_tmp((pixel *) left,8 * 2, bitdepth_max);

+

+                memcpy(a_src, src, (10 * 16 + 8) * sizeof(pixel));

+                memcpy(c_src, src, (10 * 16 + 8) * sizeof(pixel));

                 const int lvl = 1 + (rnd() % 62);

                 const int damping = 3 + (rnd() & 3) + bitdepth_min_8;