From ee1720b99dfb5964962f2346406a4e3e88374a68 Mon Sep 17 00:00:00 2001 From: Roland Scheidegger Date: Tue, 8 Dec 2009 19:13:48 +0100 Subject: gallium: fix more potential strict aliasing issues In particular, gcc man page warns that union a_union { int i; double d; }; int f() { double d = 3.0; return ((union a_union *) &d)->i; } "might" not be ok (why not?), even though it doesn't seem to generate any warnings. Hence don't use this and do the extra step to actually use assignment to get the values in/out of the union. This changes parts of 3456f9149b3009fcfce80054759d05883d3c4ee5. --- src/mesa/state_tracker/st_atom_pixeltransfer.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) (limited to 'src/mesa') diff --git a/src/mesa/state_tracker/st_atom_pixeltransfer.c b/src/mesa/state_tracker/st_atom_pixeltransfer.c index 5e2ae1bb36..6a5854e9ba 100644 --- a/src/mesa/state_tracker/st_atom_pixeltransfer.c +++ b/src/mesa/state_tracker/st_atom_pixeltransfer.c @@ -162,12 +162,14 @@ load_color_map_texture(GLcontext *ctx, struct pipe_texture *pt) */ for (i = 0; i < texSize; i++) { for (j = 0; j < texSize; j++) { + union util_color uc; int k = (i * texSize + j); ubyte r = ctx->PixelMaps.RtoR.Map8[j * rSize / texSize]; ubyte g = ctx->PixelMaps.GtoG.Map8[i * gSize / texSize]; ubyte b = ctx->PixelMaps.BtoB.Map8[j * bSize / texSize]; ubyte a = ctx->PixelMaps.AtoA.Map8[i * aSize / texSize]; - util_pack_color_ub(r, g, b, a, pt->format, (union util_color *)(dest + k)); + util_pack_color_ub(r, g, b, a, pt->format, &uc); + *(dest + k) = uc.ui; } } -- cgit v1.2.3