[COMMITTED 124/144] gccrs: Add test case to show ICE is fixed

[arthur . cohen]

From: Philip Herron <herron.phi...@googlemail.com>

This was resolved in: 18422c9c386 which was missing the name
resolution step for unit-types.

Fixes #2203

gcc/testsuite/ChangeLog:

        * rust/compile/nr2/exclude:
        * rust/compile/issue-2203.rs: New test.

Signed-off-by: Philip Herron <herron.phi...@googlemail.com>
---
 gcc/testsuite/rust/compile/issue-2203.rs | 3 +++
 gcc/testsuite/rust/compile/nr2/exclude   | 1 +
 2 files changed, 4 insertions(+)
 create mode 100644 gcc/testsuite/rust/compile/issue-2203.rs

diff --git a/gcc/testsuite/rust/compile/issue-2203.rs 
b/gcc/testsuite/rust/compile/issue-2203.rs
new file mode 100644
index 00000000000..961381d69f7
--- /dev/null
+++ b/gcc/testsuite/rust/compile/issue-2203.rs
@@ -0,0 +1,3 @@
+trait A {}
+
+impl A for () {}
diff --git a/gcc/testsuite/rust/compile/nr2/exclude 
b/gcc/testsuite/rust/compile/nr2/exclude
index c30af607edb..e792462ba33 100644
--- a/gcc/testsuite/rust/compile/nr2/exclude
+++ b/gcc/testsuite/rust/compile/nr2/exclude
@@ -254,3 +254,4 @@ issue-3139-2.rs
 issue-3139-3.rs
 issue-3036.rs
 issue-2951.rs
+issue-2203.rs
\ No newline at end of file
-- 
2.45.2