Matteo et al,
there is some code in dlls/d3dx9_36/surface.c which GCC struggles with
(in the sense of warning about it), and so do I, so I am wondering whether
you can have a look?
Specifically, in point_filter_simple_data we have:
DWORD val = 0, pixel;
/* extract source color components */
if(srcformat->type == FORMAT_ARGB) {
pixel = dword_from_bytes(srcptr, srcformat->bytes_per_pixel);
get_relevant_argb_components(&conv_info, pixel, channels);
}
So, pixel is uninitialized, except when we have FORMAT_ARGB.
However, directly below we then have
/* recombine the components */
if(destformat->type == FORMAT_ARGB) val = make_argb_color(&conv_info, channels);
if(colorkey) {
get_relevant_argb_components(&ck_conv_info, pixel, channels);
where pixel is passed to get_relevant_argb_components. This is guarded
by colorkey, a parameter to this function, so indeed I can see pixel being
unused here.
(I'd naively propose a patch like the one below; this may not be
sufficient though.)
Gerald
diff --git a/dlls/d3dx9_36/surface.c b/dlls/d3dx9_36/surface.c
index a3e6e68..cc36818 100644
--- a/dlls/d3dx9_36/surface.c
+++ b/dlls/d3dx9_36/surface.c
@@ -701,7 +701,7 @@ static void copy_simple_data(CONST BYTE *src, UINT srcpitch, POINT srcsize,
DWORD val = 0;
for(x = 0;x < minwidth;x++) {
- DWORD pixel;
+ DWORD pixel = 0xFFFFFFFF;
/* extract source color components */
if(srcformat->type == FORMAT_ARGB) {
@@ -768,7 +768,7 @@ static void point_filter_simple_data(CONST BYTE *src, UINT srcpitch, POINT srcsi
for(x = 0;x < destsize.x;x++) {
const BYTE *srcptr = bufptr + (x * srcsize.x / destsize.x) * srcformat->bytes_per_pixel;
- DWORD val = 0, pixel;
+ DWORD val = 0, pixel = 0xFFFFFFFF;
/* extract source color components */
if(srcformat->type == FORMAT_ARGB) {