Fix ice caused by shorthand fields in NoFieldsForFnCall

Author: chenyukang

compiler/rustc_parse/src/parser/expr.rs

@@ -1180,6 +1180,13 @@ impl<'a> Parser<'a> {
                         self.restore_snapshot(snapshot);
                         let close_paren = self.prev_token.span;
                         let span = lo.to(close_paren);
+                        // filter shorthand fields
+                        let fields: Vec<_> = fields
+                            .into_iter()
+                            .filter_map(
+                                |field| if !field.is_shorthand { Some(field) } else { None },
+                            )
+                            .collect();
                         if !fields.is_empty() &&
                             // `token.kind` should not be compared here.
                             // This is because the `snapshot.token.kind` is treated as the same as

tests/ui/parser/issues/issue-111416.rs

@@ -0,0 +1,4 @@
+
+fn main() {
+    let my = monad_bind(mx, T: Try); //~ ERROR invalid `struct` delimiters or `fn` call arguments
+}

tests/ui/parser/issues/issue-111416.stderr

@@ -0,0 +1,18 @@
+error: invalid `struct` delimiters or `fn` call arguments
+  --> $DIR/issue-111416.rs:3:14
+   |
+LL |     let my = monad_bind(mx, T: Try);
+   |              ^^^^^^^^^^^^^^^^^^^^^^
+   |
+help: if `monad_bind` is a struct, use braces as delimiters
+   |
+LL |     let my = monad_bind { mx, T: Try };
+   |                         ~            ~
+help: if `monad_bind` is a function, use the arguments directly
+   |
+LL -     let my = monad_bind(mx, T: Try);
+LL +     let my = monad_bind(mx, Try);
+   |
+
+error: aborting due to previous error
+