1 files changed, 23 insertions, 0 deletions
diff --git a/src/test/ui/print_type_sizes/no_duplicates.rs b/src/test/ui/print_type_sizes/no_duplicates.rs
new file mode 100644
index 000000000..e45e4794a
--- /dev/null
+++ b/src/test/ui/print_type_sizes/no_duplicates.rs
@@ -0,0 +1,23 @@
+// compile-flags: -Z print-type-sizes
+// build-pass
+// ignore-pass
+// ^-- needed because `--pass check` does not emit the output needed.
+//     FIXME: consider using an attribute instead of side-effects.
+
+// This file illustrates that when the same type occurs repeatedly
+// (even if multiple functions), it is only printed once in the
+// print-type-sizes output.
+
+#![feature(start)]
+
+pub struct SevenBytes([u8; 7]);
+
+pub fn f1() {
+    let _s: SevenBytes = SevenBytes([0; 7]);
+}
+
+#[start]
+fn start(_: isize, _: *const *const u8) -> isize {
+    let _s: SevenBytes = SevenBytes([0; 7]);
+    0
+}