From e7359068397c6fd78738c36872f4e5147a2faf85 Mon Sep 17 00:00:00 2001
From: SabrinaJewson <sejewson@gmail.com>
Date: Tue, 1 Oct 2024 22:09:31 +0100
Subject: [PATCH] fix: correctly parse `use` in generic parameters

---
 crates/parser/src/grammar/generic_params.rs   |  2 +-
 .../test_data/parser/err/0055_impl_use.rast   | 26 +++++++++++++++++++
 .../test_data/parser/err/0055_impl_use.rs     |  2 ++
 3 files changed, 29 insertions(+), 1 deletion(-)
 create mode 100644 crates/parser/test_data/parser/err/0055_impl_use.rast
 create mode 100644 crates/parser/test_data/parser/err/0055_impl_use.rs

diff --git a/crates/parser/src/grammar/generic_params.rs b/crates/parser/src/grammar/generic_params.rs
index e0fa753fa7..ecfabca092 100644
--- a/crates/parser/src/grammar/generic_params.rs
+++ b/crates/parser/src/grammar/generic_params.rs
@@ -145,7 +145,7 @@ fn type_bound(p: &mut Parser<'_>) -> bool {
         T![for] => types::for_type(p, false),
         // test precise_capturing
         // fn captures<'a: 'a, 'b: 'b, T>() -> impl Sized + use<'b, T> {}
-        T![use] => {
+        T![use] if p.nth_at(1, T![<]) => {
             p.bump_any();
             generic_param_list(p)
         }
diff --git a/crates/parser/test_data/parser/err/0055_impl_use.rast b/crates/parser/test_data/parser/err/0055_impl_use.rast
new file mode 100644
index 0000000000..751f007df9
--- /dev/null
+++ b/crates/parser/test_data/parser/err/0055_impl_use.rast
@@ -0,0 +1,26 @@
+SOURCE_FILE
+  IMPL
+    IMPL_KW "impl"
+    GENERIC_PARAM_LIST
+      L_ANGLE "<"
+      TYPE_PARAM
+        NAME
+          IDENT "T"
+        COLON ":"
+        WHITESPACE "\n"
+        TYPE_BOUND_LIST
+    ERROR
+      USE_KW "use"
+  WHITESPACE " "
+  MACRO_CALL
+    PATH
+      PATH_SEGMENT
+        NAME_REF
+          IDENT "std"
+    SEMICOLON ";"
+  WHITESPACE "\n"
+error 8: expected R_ANGLE
+error 8: expected type
+error 11: expected `{`
+error 15: expected BANG
+error 15: expected `{`, `[`, `(`
diff --git a/crates/parser/test_data/parser/err/0055_impl_use.rs b/crates/parser/test_data/parser/err/0055_impl_use.rs
new file mode 100644
index 0000000000..571552bda8
--- /dev/null
+++ b/crates/parser/test_data/parser/err/0055_impl_use.rs
@@ -0,0 +1,2 @@
+impl<T:
+use std;