1 files changed, 43 insertions, 0 deletions
diff --git a/samples/test/gcc5_codegen_bug.rs b/samples/test/gcc5_codegen_bug.rs
new file mode 100644
index 00000000..9dab5a82
--- /dev/null
+++ b/samples/test/gcc5_codegen_bug.rs
@@ -0,0 +1,43 @@
+// compile-flags: -O
+
+// ::"core"::iter::Map<::"core"::iter::Chain<::"core"::iter::sources::Once<::"syntax"::ast::NodeId/*S*/,>/*S*/,::"core"::iter::Map<::"core"::slice::Iter<::"syntax"::codemap::Spanned<::"syntax"::ast::PathListItem_/*S*/,>/*S*/,>/*S*/,::"rustc"::closure_I_82<::"rustc"::hir::lowering::LoweringContext/*S*/,>/*S*/,>/*S*/,>/*S*/,::"rustc"::closure_I_83<::"rustc"::hir::lowering::LoweringContext/*S*/,>/*S*/,>
+
+#[derive(Copy,Debug)]
+struct NodeId(u32);
+struct Ident(u32);
+struct PathListItem_
+{
+    i: Ident,
+    i2: Option<Ident>,
+    n: NodeId,
+}
+struct Span(u32, u32, u32);
+struct Spanned<T>
+{
+    v: T,
+    sp: Span,
+}
+#[derive(Copy,Debug)]
+struct ItemId {
+    id: NodeId,
+}
+
+fn main()
+{
+    // return iter::once(i.id).chain(imports.iter().map(|import| import.node.id)).map(|id| hir::ItemId { id: id }).collect();
+    //let list = [ Spanned { v: PathListItem_ { i: Ident(0), i2: None, n: NodeId(0) }, sp: Span(1,1,1) } ];
+    let list: [Spanned<PathListItem_>; 0] = [ ];
+
+    println!("{:?}", foo(0, &[]));
+    println!("{:?}", foo(0, &[ Spanned { v: PathListItem_ { i: Ident(0), i2: None, n: NodeId(0) }, sp: Span(1,1,1) } ]));
+    println!("{:?}", foo(0, &vec![]));
+}
+
+fn foo(n: u32, list: &[Spanned<PathListItem_>]) -> Vec<ItemId> {
+    Iterator::chain(
+            ::std::iter::once(NodeId(0)),
+            list.iter().map(|v| v.v.n)
+        ).map(|id| ItemId { id: id })
+        .collect()
+}
+