1 files changed, 5 insertions, 0 deletions
diff --git a/src/tools/rust-analyzer/crates/parser/src/lexed_str.rs b/src/tools/rust-analyzer/crates/parser/src/lexed_str.rs
index b48921f19..100deff46 100644
--- a/src/tools/rust-analyzer/crates/parser/src/lexed_str.rs
+++ b/src/tools/rust-analyzer/crates/parser/src/lexed_str.rs
@@ -82,6 +82,7 @@ impl<'a> LexedStr<'a> {
     pub fn text(&self, i: usize) -> &str {
         self.range_text(i..i + 1)
     }
+
     pub fn range_text(&self, r: ops::Range<usize>) -> &str {
         assert!(r.start < r.end && r.end <= self.len());
         let lo = self.start[r.start] as usize;
@@ -216,6 +217,10 @@ impl<'a> Converter<'a> {
                 rustc_lexer::TokenKind::Caret => T![^],
                 rustc_lexer::TokenKind::Percent => T![%],
                 rustc_lexer::TokenKind::Unknown => ERROR,
+                rustc_lexer::TokenKind::UnknownPrefix => {
+                    err = "unknown literal prefix";
+                    IDENT
+                }
             }
         };