add a unit test for rust-lang#62524

Author: Guanqun Lu

src/test/ui/parser/issue-62524.rs

@@ -0,0 +1,4 @@
+// ignore-tidy-trailing-newlines
+// error-pattern: aborting due to 3 previous errors
+y![
+Ϥ,

src/test/ui/parser/issue-62524.stderr

@@ -0,0 +1,34 @@
+error: this file contains an un-closed delimiter
+  --> $DIR/issue-62524.rs:4:3
+   |
+LL | y![
+   |   - un-closed delimiter
+LL | Ϥ,
+   |   ^
+
+error: macros that expand to items must be delimited with braces or followed by a semicolon
+  --> $DIR/issue-62524.rs:3:3
+   |
+LL |   y![
+   |  ___^
+LL | | Ϥ,
+   | |__^
+   |
+help: change the delimiters to curly braces
+   |
+LL | y!{
+LL | Ϥ}
+   |
+help: add a semicolon
+   |
+LL | Ϥ,;
+   |   ^
+
+error: cannot find macro `y` in this scope
+  --> $DIR/issue-62524.rs:3:1
+   |
+LL | y![
+   | ^
+
+error: aborting due to 3 previous errors
+