Fixed UB flagged by Miri.

YoshikiTakashima · hsivonen · commit 08a1a7ea9f8f · 2020-08-24T11:03:21.000+03:00
diff --git a/src/ascii.rs b/src/ascii.rs
@@ -211,7 +211,7 @@ macro_rules! basic_latin_alu {
                         let src_until_alignment = (ALU_ALIGNMENT
                             - ((src as usize) & ALU_ALIGNMENT_MASK))
                             & ALU_ALIGNMENT_MASK;
-                        if (dst.add(src_until_alignment) as usize) & ALU_ALIGNMENT_MASK != 0 {
+                        if (dst.wrapping_add(src_until_alignment) as usize) & ALU_ALIGNMENT_MASK != 0 {
                             break;
                         }
                         src_until_alignment

Original file line number	Diff line number	Diff line change
`@@ -211,7 +211,7 @@ macro_rules! basic_latin_alu {`
`211`	`211`	`let src_until_alignment = (ALU_ALIGNMENT`
`212`	`212`	`- ((src as usize) & ALU_ALIGNMENT_MASK))`
`213`	`213`	`& ALU_ALIGNMENT_MASK;`
`214`		`- if (dst.add(src_until_alignment) as usize) & ALU_ALIGNMENT_MASK != 0 {`
	`214`	`+ if (dst.wrapping_add(src_until_alignment) as usize) & ALU_ALIGNMENT_MASK != 0 {`
`215`	`215`	`break;`
`216`	`216`	`}`
`217`	`217`	`src_until_alignment`