On Sat, Jul 07, 2018 at 08:22:38PM -0300, Rodrigo Siqueira wrote: > This commit fixes the GCC warning: > > warning: pointer of type ‘void *’ used in arithmetic [-Wpointer-arith] > memset(ptr + offsets[0], full_range ? 0x00 : 0x10, > ^ > warning: pointer of type ‘void *’ used in arithmetic [-Wpointer-arith] > memset(ptr + offsets[1], 0x80, > > This commit cast the ptr pointer, which is a void *, to uint32_t * in > the pointer arithmetic operation.
This will change semantics, as according to GNU C standard[1], void pointers have a size of 1 for all arithmetical purposes. So you should be using uint8_t (or char) pointer instead. [1]: http://gcc.gnu.org/onlinedocs/gcc/Pointer-Arith.html > Signed-off-by: Rodrigo Siqueira <rodrigosiqueiram...@gmail.com> > --- > lib/igt_fb.c | 6 ++++-- > 1 file changed, 4 insertions(+), 2 deletions(-) > > diff --git a/lib/igt_fb.c b/lib/igt_fb.c > index ae71d967..ca905038 100644 > --- a/lib/igt_fb.c > +++ b/lib/igt_fb.c > @@ -410,9 +410,11 @@ static int create_bo_for_fb(int fd, int width, int > height, > > switch (format->drm_id) { > case DRM_FORMAT_NV12: > - memset(ptr + offsets[0], full_range ? 0x00 : > 0x10, > + memset(((uint32_t *)ptr) + offsets[0], > + full_range ? 0x00 : 0x10, > calculated_stride * height); > - memset(ptr + offsets[1], 0x80, > + memset(((uint32_t *)ptr) + offsets[1], > + 0x80, > calculated_stride * height/2); > break; > case DRM_FORMAT_YUYV: > -- > 2.18.0 > _______________________________________________ Intel-gfx mailing list Intel-gfx@lists.freedesktop.org https://lists.freedesktop.org/mailman/listinfo/intel-gfx
