gccrs: [gccrs#3046] ICE on failing to find enum variant

gcc/rust/ChangeLog:
	* typecheck/rust-hir-type-check-expr.cc:
	Fix ICE caused by not finding enum variant by adding new error
	message

gcc/testsuite/ChangeLog:
	* rust/compile/issue-3046.rs:
	Add test for new error message

Signed-off-by: Liam Naddell <liam.naddell@mail.utoronto.ca>

1 files changed, 23 insertions, 0 deletions

diff --git a/gcc/testsuite/rust/compile/issue-3046.rs b/gcc/testsuite/rust/compile/issue-3046.rs
new file mode 100644
index 0000000..c982cc9
--- /dev/null
+++ b/gcc/testsuite/rust/compile/issue-3046.rs
@@ -0,0 +1,23 @@
+enum Res {
+    OK,
+    BAD,
+}
+
+enum LOption {
+    Some(i32),
+    None,
+}
+
+fn test(v: LOption) -> Res {
+    return Res::BAD;
+}
+
+
+fn main() {
+    // Should be:
+    // test(LOption::Some(2));
+    // 
+    test(LOption(2));
+    // { dg-error "expected function, tuple struct or tuple variant, found enum" "" { target *-*-* } .-1 }
+    // { dg-error "failed to resolve type for argument expr in CallExpr" "" { target *-*-* } .-2 }
+}