From eebb3eb983eecb98834aaea3d1e6eb3266132f30 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Emilio=20Cobos=20=C3=81lvarez?= <emilio@crisal.io>
Date: Thu, 15 Jun 2023 13:45:13 +0200
Subject: [PATCH] tests: Add a test for #2556

---
 .../tests/expectations/tests/issue-2556.rs    | 43 +++++++++++++++++++
 bindgen-tests/tests/headers/issue-2556.h      |  4 ++
 .../headers/issue-2556/LayoutConstants.h      |  7 +++
 .../tests/headers/issue-2556/nsSize.h         |  6 +++
 .../tests/headers/issue-2556/nsStyleStruct.h  |  3 ++
 5 files changed, 63 insertions(+)
 create mode 100644 bindgen-tests/tests/expectations/tests/issue-2556.rs
 create mode 100644 bindgen-tests/tests/headers/issue-2556.h
 create mode 100644 bindgen-tests/tests/headers/issue-2556/LayoutConstants.h
 create mode 100644 bindgen-tests/tests/headers/issue-2556/nsSize.h
 create mode 100644 bindgen-tests/tests/headers/issue-2556/nsStyleStruct.h

diff --git a/bindgen-tests/tests/expectations/tests/issue-2556.rs b/bindgen-tests/tests/expectations/tests/issue-2556.rs
new file mode 100644
index 0000000000..7722b851e2
--- /dev/null
+++ b/bindgen-tests/tests/expectations/tests/issue-2556.rs
@@ -0,0 +1,43 @@
+#![allow(dead_code, non_snake_case, non_camel_case_types, non_upper_case_globals)]
+#[allow(non_snake_case, non_camel_case_types, non_upper_case_globals)]
+pub mod root {
+    #[allow(unused_imports)]
+    use self::super::root;
+    #[repr(C)]
+    #[derive(Debug, Default, Copy, Clone)]
+    pub struct nsSize {
+        pub width: ::std::os::raw::c_int,
+        pub height: ::std::os::raw::c_int,
+    }
+    #[test]
+    fn bindgen_test_layout_nsSize() {
+        const UNINIT: ::std::mem::MaybeUninit<nsSize> = ::std::mem::MaybeUninit::uninit();
+        let ptr = UNINIT.as_ptr();
+        assert_eq!(
+            ::std::mem::size_of:: < nsSize > (), 8usize, concat!("Size of: ",
+            stringify!(nsSize))
+        );
+        assert_eq!(
+            ::std::mem::align_of:: < nsSize > (), 4usize, concat!("Alignment of ",
+            stringify!(nsSize))
+        );
+        assert_eq!(
+            unsafe { ::std::ptr::addr_of!((* ptr).width) as usize - ptr as usize },
+            0usize, concat!("Offset of field: ", stringify!(nsSize), "::",
+            stringify!(width))
+        );
+        assert_eq!(
+            unsafe { ::std::ptr::addr_of!((* ptr).height) as usize - ptr as usize },
+            4usize, concat!("Offset of field: ", stringify!(nsSize), "::",
+            stringify!(height))
+        );
+    }
+    pub mod foo {
+        #[allow(unused_imports)]
+        use self::super::super::root;
+        extern "C" {
+            #[link_name = "\u{1}_ZN3fooL22kFallbackIntrinsicSizeE"]
+            pub static kFallbackIntrinsicSize: root::nsSize;
+        }
+    }
+}
diff --git a/bindgen-tests/tests/headers/issue-2556.h b/bindgen-tests/tests/headers/issue-2556.h
new file mode 100644
index 0000000000..bbb1b874ec
--- /dev/null
+++ b/bindgen-tests/tests/headers/issue-2556.h
@@ -0,0 +1,4 @@
+// bindgen-flags: --enable-cxx-namespaces -- -x c++ -Itests/headers -include tests/headers/issue-2556/nsStyleStruct.h -include tests/headers/issue-2556/LayoutConstants.h
+
+#include "issue-2556/nsSize.h"
+#include "issue-2556/nsStyleStruct.h"
diff --git a/bindgen-tests/tests/headers/issue-2556/LayoutConstants.h b/bindgen-tests/tests/headers/issue-2556/LayoutConstants.h
new file mode 100644
index 0000000000..bf69b5e5b1
--- /dev/null
+++ b/bindgen-tests/tests/headers/issue-2556/LayoutConstants.h
@@ -0,0 +1,7 @@
+#include "nsSize.h"
+
+namespace foo {
+
+static constexpr nsSize kFallbackIntrinsicSize(0, 0);
+
+}  // namespace mozilla
diff --git a/bindgen-tests/tests/headers/issue-2556/nsSize.h b/bindgen-tests/tests/headers/issue-2556/nsSize.h
new file mode 100644
index 0000000000..8fe8b95023
--- /dev/null
+++ b/bindgen-tests/tests/headers/issue-2556/nsSize.h
@@ -0,0 +1,6 @@
+#pragma once
+
+struct nsSize {
+  int width, height;
+  constexpr nsSize(int aWidth, int aHeight) : width(aWidth), height(aHeight) {}
+};
diff --git a/bindgen-tests/tests/headers/issue-2556/nsStyleStruct.h b/bindgen-tests/tests/headers/issue-2556/nsStyleStruct.h
new file mode 100644
index 0000000000..4c6eedfb9a
--- /dev/null
+++ b/bindgen-tests/tests/headers/issue-2556/nsStyleStruct.h
@@ -0,0 +1,3 @@
+#pragma once
+
+#include "nsSize.h"