2 files changed, 8 insertions, 6 deletions
diff --git a/compiler/rustc_lint/src/lints.rs b/compiler/rustc_lint/src/lints.rs
index 7d63fad3044..e19bb1cb62f 100644
--- a/compiler/rustc_lint/src/lints.rs
+++ b/compiler/rustc_lint/src/lints.rs
@@ -1109,6 +1109,7 @@ pub struct IdentifierNonAsciiChar;
 #[diag(lint_identifier_uncommon_codepoints)]
 pub struct IdentifierUncommonCodepoints {
     pub codepoints: Vec<char>,
+    pub codepoints_len: usize,
 }
 
 #[derive(LintDiagnostic)]
diff --git a/compiler/rustc_lint/src/non_ascii_idents.rs b/compiler/rustc_lint/src/non_ascii_idents.rs
index ec11f7a6130..f78b32ce5e7 100644
--- a/compiler/rustc_lint/src/non_ascii_idents.rs
+++ b/compiler/rustc_lint/src/non_ascii_idents.rs
@@ -190,15 +190,16 @@ impl EarlyLintPass for NonAsciiIdents {
             if check_uncommon_codepoints
                 && !symbol_str.chars().all(GeneralSecurityProfile::identifier_allowed)
             {
+                let codepoints: Vec<_> = symbol_str
+                    .chars()
+                    .filter(|c| !GeneralSecurityProfile::identifier_allowed(*c))
+                    .collect();
+                let codepoints_len = codepoints.len();
+
                 cx.emit_span_lint(
                     UNCOMMON_CODEPOINTS,
                     sp,
-                    IdentifierUncommonCodepoints {
-                        codepoints: symbol_str
-                            .chars()
-                            .filter(|c| !GeneralSecurityProfile::identifier_allowed(*c))
-                            .collect(),
-                    },
+                    IdentifierUncommonCodepoints { codepoints, codepoints_len },
                 );
             }
         }