Use char_indices() to get byte indices for characters

djc · Sep 11, 2023 · 2e8e42a · 2e8e42a
1 parent dd9635a
commit 2e8e42a
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Showing 2 changed files with 8 additions and 1 deletion.
diff --git a/askama_parser/src/expr.rs b/askama_parser/src/expr.rs
@@ -254,7 +254,7 @@ impl<'a> Suffix<'a> {
             let mut in_str = false;
             let mut escaped = false;
 
-            for (i, c) in input.chars().enumerate() {
+            for (i, c) in input.char_indices() {
                 if !(c == '(' || c == ')') || !in_str {
                     match c {
                         '(' => nested += 1,

diff --git a/askama_parser/src/tests.rs b/askama_parser/src/tests.rs
@@ -788,3 +788,10 @@ fn test_parse_array() {
         )],
     );
 }
+
+#[test]
+fn fuzzed_unicode_slice() {
+    let d = "{eeuuu{b&{!!&{!!11{{
+            0!(!1q҄א!)!!!!!!n!";
+    assert!(Ast::from_str(d, &Syntax::default()).is_err());
+}