[gcc r14-8622] gccrs: Test: check implemented for lifetime handling

[Arthur Cohen]

https://gcc.gnu.org/g:b49afa9ba4ad94fc71a246bceca2fcc277cb0ada

commit r14-8622-gb49afa9ba4ad94fc71a246bceca2fcc277cb0ada
Author: Jakub Dupak <dev@jakubdupak.com>
Date:   Thu Jan 18 14:37:58 2024 +0100

    gccrs: Test: check implemented for lifetime handling
    
    gcc/testsuite/ChangeLog:
    
            * rust/compile/for_lifetimes.rs: New test.
    
    Signed-off-by: Jakub Dupak <dev@jakubdupak.com>

Diff:
---
 gcc/testsuite/rust/compile/for_lifetimes.rs | 19 +++++++++++++++++++
 1 file changed, 19 insertions(+)

diff --git a/gcc/testsuite/rust/compile/for_lifetimes.rs b/gcc/testsuite/rust/compile/for_lifetimes.rs
new file mode 100644
index 000000000000..26469624298a
--- /dev/null
+++ b/gcc/testsuite/rust/compile/for_lifetimes.rs
@@ -0,0 +1,19 @@
+// { dg-additional-options "-frust-compile-until=typecheck" }
+
+fn function_pointer_as_argument(f: for<'a> fn(&'a i32) -> &'a i32) -> i32 {
+    0
+}
+
+fn function_pointer_as_return() -> for<'a> fn(&'a i32) -> &'a i32 {
+}
+
+// https://doc.rust-lang.org/reference/trait-bounds.html
+
+trait Fn<T> {}
+fn call_on_ref_zero<F>(f: F) where for<'a> F: Fn(&'a i32) {}
+
+fn call_on_ref_zero2<F>(f: F) where F: for<'a> Fn(&'a i32) {}
+
+trait Trait<'a, T: 'a> {}
+
+impl<'a, T> Trait<'a, T> for &'a T {}
\ No newline at end of file