Rollup merge of #50421 - kennytm:fix-50415-ice-when-returning-range-inclusive-from-closure, r=michaelwoerister

Fix ICE when using a..=b in a closure.

Fix #50415.

1 files changed, 2 insertions, 6 deletions

diff --git a/src/libsyntax/parse/mod.rs b/src/libsyntax/parse/mod.rs
index ff09c6aa2f0..f252020bc31 100644
--- a/src/libsyntax/parse/mod.rs
+++ b/src/libsyntax/parse/mod.rs
@@ -298,14 +298,10 @@ pub fn char_lit(lit: &str, diag: Option<(Span, &Handler)>) -> (char, isize) {
     }
 }
 
-pub fn escape_default(s: &str) -> String {
-    s.chars().map(char::escape_default).flat_map(|x| x).collect()
-}
-
 /// Parse a string representing a string literal into its final form. Does
 /// unescaping.
 pub fn str_lit(lit: &str, diag: Option<(Span, &Handler)>) -> String {
-    debug!("parse_str_lit: given {}", escape_default(lit));
+    debug!("str_lit: given {}", lit.escape_default());
     let mut res = String::with_capacity(lit.len());
 
     let error = |i| format!("lexer should have rejected {} at {}", lit, i);
@@ -374,7 +370,7 @@ pub fn str_lit(lit: &str, diag: Option<(Span, &Handler)>) -> String {
 /// Parse a string representing a raw string literal into its final form. The
 /// only operation this does is convert embedded CRLF into a single LF.
 pub fn raw_str_lit(lit: &str) -> String {
-    debug!("raw_str_lit: given {}", escape_default(lit));
+    debug!("raw_str_lit: given {}", lit.escape_default());
     let mut res = String::with_capacity(lit.len());
 
     let mut chars = lit.chars().peekable();