Fix potential overflow

matklad · matklad · commit 3c1714d76d01 · 2020-06-27T21:35:52.000+02:00
diff --git a/crates/expect/src/lib.rs b/crates/expect/src/lib.rs
@@ -188,8 +188,8 @@ impl Patchwork {
             .fold((0usize, 0usize), |(x1, y1), (x2, y2)| (x1 + x2, y1 + y2));
 
         for pos in &mut [&mut range.start, &mut range.end] {
+            **pos -= delete;
             **pos += insert;
-            **pos -= delete
         }
 
         self.text.replace_range(range, &patch);

Original file line number	Diff line number	Diff line change
`@@ -188,8 +188,8 @@ impl Patchwork {`
`188`	`188`	`.fold((0usize, 0usize), \|(x1, y1), (x2, y2)\| (x1 + x2, y1 + y2));`
`189`	`189`
`190`	`190`	`for pos in &mut [&mut range.start, &mut range.end] {`
	`191`	`+ **pos -= delete;`
`191`	`192`	`**pos += insert;`
`192`		`- **pos -= delete`
`193`	`193`	`}`
`194`	`194`
`195`	`195`	`self.text.replace_range(range, &patch);`