full range expr

1 files changed, 5 insertions, 1 deletions

diff --git a/crates/libsyntax2/src/grammar/expressions/mod.rs b/crates/libsyntax2/src/grammar/expressions/mod.rs
index e56f3d30e..feef5f1d6 100644
--- a/crates/libsyntax2/src/grammar/expressions/mod.rs
+++ b/crates/libsyntax2/src/grammar/expressions/mod.rs
@@ -174,10 +174,14 @@ fn lhs(p: &mut Parser, r: Restrictions) -> Option<CompletedMarker> {
             p.bump();
             PREFIX_EXPR
         }
+        // test full_range_expr
+        // fn foo() { xs[..]; }
         DOTDOT => {
             m = p.start();
             p.bump();
-            expr_bp(p, r, 2);
+            if EXPR_FIRST.contains(p.current()) {
+                expr_bp(p, r, 2);
+            }
             return Some(m.complete(p, RANGE_EXPR));
         }
         _ => {