bendns' repos / rust-analyzer
Unnamed repository; edit this file 'description' to name the repository.
Diffstat (limited to 'crates/parser/src/grammar/patterns.rs')
-rw-r--r--crates/parser/src/grammar/patterns.rs10
1 files changed, 10 insertions, 0 deletions
diff --git a/crates/parser/src/grammar/patterns.rs b/crates/parser/src/grammar/patterns.rs
index 4801732101..39ded41bb2 100644
--- a/crates/parser/src/grammar/patterns.rs
+++ b/crates/parser/src/grammar/patterns.rs
@@ -413,6 +413,16 @@ fn tuple_pat(p: &mut Parser<'_>) -> CompletedMarker {
let mut has_comma = false;
let mut has_pat = false;
let mut has_rest = false;
+
+ // test_err tuple_pat_leading_comma
+ // fn foo() {
+ // let (,);
+ // }
+ if p.eat(T![,]) {
+ p.error("expected pattern");
+ has_comma = true;
+ }
+
while !p.at(EOF) && !p.at(T![')']) {
has_pat = true;
if !p.at_ts(PAT_TOP_FIRST) {