gallium/util: fix util_color_[un]pack[-ub] to be strict aliasing safe

use pointer to union instead of void pointer.
gcc complained a lot, depending what the pointer originally actually was.
Looks like it's in fact maybe legal to cast for instance uint pointers to
union pointers as long as union contains a uint type, hence use this with some
callers, other just use union util_color in the first place.

1 files changed, 4 insertions, 4 deletions

diff --git a/src/gallium/auxiliary/util/u_clear.h b/src/gallium/auxiliary/util/u_clear.h
index 1e65a035aed..2c32db61756 100644
--- a/src/gallium/auxiliary/util/u_clear.h
+++ b/src/gallium/auxiliary/util/u_clear.h
@@ -46,13 +46,13 @@ util_clear(struct pipe_context *pipe,
 {
    if (buffers & PIPE_CLEAR_COLOR) {
       struct pipe_surface *ps = framebuffer->cbufs[0];
-      unsigned color;
+      union util_color uc;
 
-      util_pack_color(rgba, ps->format, &color);
+      util_pack_color(rgba, ps->format, &uc);
       if (pipe->surface_fill) {
-         pipe->surface_fill(pipe, ps, 0, 0, ps->width, ps->height, color);
+         pipe->surface_fill(pipe, ps, 0, 0, ps->width, ps->height, uc.ui);
       } else {
-         util_surface_fill(pipe, ps, 0, 0, ps->width, ps->height, color);
+         util_surface_fill(pipe, ps, 0, 0, ps->width, ps->height, uc.ui);
       }
    }