Rollup merge of #66564 - foeb:66219-document-unsafe-sync-cell-str, r=Amanieu

[rust.git] / src / librustc_hir / print.rs

diff --git a/src/librustc_hir/print.rs b/src/librustc_hir/print.rs
index 571bab2cb83f288869707bbfc7c80cfc2c3b156a..759f423070aa0b35019e0840b47403f8266f8327 100644 (file)
--- a/src/librustc_hir/print.rs
+++ b/src/librustc_hir/print.rs
@@ -1767,13 +1767,17 @@ pub fn print_pat(&mut self, pat: &hir::Pat<'_>) {
             }
             PatKind::Lit(ref e) => self.print_expr(&e),
             PatKind::Range(ref begin, ref end, ref end_kind) => {
-                self.print_expr(&begin);
-                self.s.space();
+                if let Some(expr) = begin {
+                    self.print_expr(expr);
+                    self.s.space();
+                }
                 match *end_kind {
                     RangeEnd::Included => self.s.word("..."),
                     RangeEnd::Excluded => self.s.word(".."),
                 }
-                self.print_expr(&end);
+                if let Some(expr) = end {
+                    self.print_expr(expr);
+                }
             }
             PatKind::Slice(ref before, ref slice, ref after) => {
                 self.s.word("[");