Adjust Mode::is_unicode_escape_disallowed.

nnethercote · nnethercote · commit 29c5158ef577 · 2023-12-13T10:06:13.000+11:00
Some cases are unreachable.
diff --git a/compiler/rustc_lexer/src/unescape.rs b/compiler/rustc_lexer/src/unescape.rs
@@ -191,8 +191,9 @@ impl Mode {
     /// Byte literals do not allow unicode escape.
     fn is_unicode_escape_disallowed(self) -> bool {
         match self {
-            Byte | ByteStr | RawByteStr => true,
-            Char | Str | RawStr | CStr | RawCStr => false,
+            Byte | ByteStr => true,
+            Char | Str | CStr => false,
+            RawByteStr | RawStr | RawCStr => unreachable!(),
         }
     }
 

Original file line number	Diff line number	Diff line change
`@@ -191,8 +191,9 @@ impl Mode {`
`191`	`191`	`/// Byte literals do not allow unicode escape.`
`192`	`192`	`fn is_unicode_escape_disallowed(self) -> bool {`
`193`	`193`	`match self {`
`194`		`- Byte \| ByteStr \| RawByteStr => true,`
`195`		`- Char \| Str \| RawStr \| CStr \| RawCStr => false,`
	`194`	`+ Byte \| ByteStr => true,`
	`195`	`+ Char \| Str \| CStr => false,`
	`196`	`+ RawByteStr \| RawStr \| RawCStr => unreachable!(),`
`196`	`197`	`}`
`197`	`198`	`}`
`198`	`199`