Prefer a union over type-punning

diff --git a/src/RageSurfaceUtils_Zoom.cpp b/src/RageSurfaceUtils_Zoom.cpp
index fb8ae3c..a34a1a6 100755 (executable)
--- a/src/RageSurfaceUtils_Zoom.cpp
+++ b/src/RageSurfaceUtils_Zoom.cpp
@@ -7,6 +7,12 @@
 #include <vector>
 using namespace std;
 
+union Color
+{
+       char rgb[4];
+       uint32_t value;
+};
+
 /* Coordinate 0x0 represents the exact top-left corner of a bitmap.  .5x.5
  * represents the center of the top-left pixel; 1x1 is the center of the top
  * square of pixels.  
@@ -110,7 +116,7 @@ static void ZoomSurface( const RageSurface * src, RageSurface * dst )
                        const uint8_t *c10 = ncsp + esx0[x]*4;
                        const uint8_t *c11 = ncsp + esx1[x]*4;
 
-                       uint8_t color[4];
+                       Color color;
                        for( int c = 0; c < 4; ++c )
                        {
                                float x0, x1;
@@ -120,9 +126,9 @@ static void ZoomSurface( const RageSurface * src, RageSurface * dst )
                                x1 += c11[c] * (1-ex0[x]);
 
                                const float res = (x0 * ey0[y]) + (x1 * (1-ey0[y])) + 0.5f;
-                               color[c] = uint8_t(res);
+                               color.rgb[c] = uint8_t(res);
                        }
-                       *dp = *(uint32_t *) color;
+                       *dp = color.value;
 
                        /* Advance destination pointer. */
                        ++dp;