Fix unaligned write in bitmap backend.

Berrysoft · Berrysoft · commit 7dd77a43275b · 2023-04-21T13:19:59.000+08:00
diff --git a/plotters-bitmap/src/bitmap_pixel/rgb.rs b/plotters-bitmap/src/bitmap_pixel/rgb.rs
@@ -212,9 +212,9 @@ impl PixelFormat for RGBPixel {
                                 b, r, g, b, r, g, b, r, // QW2
                                 g, b, r, g, b, r, g, b, // QW3
                             ]);
-                            *ptr = d1;
-                            *ptr.offset(1) = d2;
-                            *ptr.offset(2) = d3;
+                            ptr.write_unaligned(d1);
+                            ptr.offset(1).write_unaligned(d2);
+                            ptr.offset(2).write_unaligned(d3);
                         }
                     }
 

Original file line number	Diff line number	Diff line change
`@@ -212,9 +212,9 @@ impl PixelFormat for RGBPixel {`
`212`	`212`	`b, r, g, b, r, g, b, r, // QW2`
`213`	`213`	`g, b, r, g, b, r, g, b, // QW3`
`214`	`214`	`]);`
`215`		`- *ptr = d1;`
`216`		`- *ptr.offset(1) = d2;`
`217`		`- *ptr.offset(2) = d3;`
	`215`	`+ ptr.write_unaligned(d1);`
	`216`	`+ ptr.offset(1).write_unaligned(d2);`
	`217`	`+ ptr.offset(2).write_unaligned(d3);`
`218`	`218`	`}`
`219`	`219`	`}`
`220`	`220`