[gcc r14-8045] gccrs: Add a new regression test

[Arthur Cohen]

https://gcc.gnu.org/g:10af70269c8858444b8c5f7c22a5b51be7af9ac2

commit r14-8045-g10af70269c8858444b8c5f7c22a5b51be7af9ac2
Author: Pierre-Emmanuel Patry <pierre-emmanuel.patry@embecosm.com>
Date:   Tue Oct 10 10:21:16 2023 +0200

    gccrs: Add a new regression test
    
    New regression test to highlight behavior of #2652.
    
    gcc/testsuite/ChangeLog:
    
            * rust/compile/parse_generic_path_expr.rs: New test.
    
    Signed-off-by: Pierre-Emmanuel Patry <pierre-emmanuel.patry@embecosm.com>

Diff:
---
 gcc/testsuite/rust/compile/parse_generic_path_expr.rs | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/gcc/testsuite/rust/compile/parse_generic_path_expr.rs b/gcc/testsuite/rust/compile/parse_generic_path_expr.rs
new file mode 100644
index 00000000000..a340067e9ea
--- /dev/null
+++ b/gcc/testsuite/rust/compile/parse_generic_path_expr.rs
@@ -0,0 +1,4 @@
+// { dg-additional-options "-frust-compile-until=ast" }
+fn main() {
+    only_foo::<<i32 as Bar>::Item>();
+}