1 files changed, 8 insertions, 1 deletions
diff --git a/src/tools/rust-analyzer/crates/parser/src/grammar/params.rs b/src/tools/rust-analyzer/crates/parser/src/grammar/params.rs
index 74eae9151..846da28cb 100644
--- a/src/tools/rust-analyzer/crates/parser/src/grammar/params.rs
+++ b/src/tools/rust-analyzer/crates/parser/src/grammar/params.rs
@@ -7,6 +7,9 @@ use super::*;
 // fn b(x: i32) {}
 // fn c(x: i32, ) {}
 // fn d(x: i32, y: ()) {}
+
+// test_err empty_param_slot
+// fn f(y: i32, ,t: i32) {}
 pub(super) fn param_list_fn_def(p: &mut Parser<'_>) {
     list_(p, Flavor::FnDef);
 }
@@ -71,7 +74,11 @@ fn list_(p: &mut Parser<'_>, flavor: Flavor) {
         if !p.at_ts(PARAM_FIRST.union(ATTRIBUTE_FIRST)) {
             p.error("expected value parameter");
             m.abandon(p);
-            break;
+            if p.eat(T![,]) {
+                continue;
+            } else {
+                break;
+            }
         }
         param(p, m, flavor);
         if !p.at(T![,]) {