From 698f8c2f01ea549d77d7dc3338a12e04c11057b9 Mon Sep 17 00:00:00 2001
From: Daniel Baumann <daniel.baumann@progress-linux.org>
Date: Wed, 17 Apr 2024 14:02:58 +0200
Subject: Adding upstream version 1.64.0+dfsg1.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
---
 .../run-make-fulldeps/extern-fn-with-union/Makefile   |  6 ++++++
 .../run-make-fulldeps/extern-fn-with-union/ctest.c    | 10 ++++++++++
 .../run-make-fulldeps/extern-fn-with-union/test.rs    | 19 +++++++++++++++++++
 .../extern-fn-with-union/testcrate.rs                 | 11 +++++++++++
 4 files changed, 46 insertions(+)
 create mode 100644 src/test/run-make-fulldeps/extern-fn-with-union/Makefile
 create mode 100644 src/test/run-make-fulldeps/extern-fn-with-union/ctest.c
 create mode 100644 src/test/run-make-fulldeps/extern-fn-with-union/test.rs
 create mode 100644 src/test/run-make-fulldeps/extern-fn-with-union/testcrate.rs

(limited to 'src/test/run-make-fulldeps/extern-fn-with-union')

diff --git a/src/test/run-make-fulldeps/extern-fn-with-union/Makefile b/src/test/run-make-fulldeps/extern-fn-with-union/Makefile
new file mode 100644
index 000000000..71a5407e8
--- /dev/null
+++ b/src/test/run-make-fulldeps/extern-fn-with-union/Makefile
@@ -0,0 +1,6 @@
+-include ../tools.mk
+
+all: $(call NATIVE_STATICLIB,ctest)
+	$(RUSTC) testcrate.rs
+	$(RUSTC) test.rs
+	$(call RUN,test) || exit 1
diff --git a/src/test/run-make-fulldeps/extern-fn-with-union/ctest.c b/src/test/run-make-fulldeps/extern-fn-with-union/ctest.c
new file mode 100644
index 000000000..86cb64537
--- /dev/null
+++ b/src/test/run-make-fulldeps/extern-fn-with-union/ctest.c
@@ -0,0 +1,10 @@
+#include <stdio.h>
+#include <stdint.h>
+
+typedef union TestUnion {
+    uint64_t bits;
+} TestUnion;
+
+uint64_t give_back(TestUnion tu) {
+    return tu.bits;
+}
diff --git a/src/test/run-make-fulldeps/extern-fn-with-union/test.rs b/src/test/run-make-fulldeps/extern-fn-with-union/test.rs
new file mode 100644
index 000000000..438fbddf3
--- /dev/null
+++ b/src/test/run-make-fulldeps/extern-fn-with-union/test.rs
@@ -0,0 +1,19 @@
+extern crate testcrate;
+
+use std::mem;
+
+extern "C" {
+    fn give_back(tu: testcrate::TestUnion) -> u64;
+}
+
+fn main() {
+    let magic: u64 = 0xDEADBEEF;
+
+    // Let's test calling it cross crate
+    let back = unsafe { testcrate::give_back(mem::transmute(magic)) };
+    assert_eq!(magic, back);
+
+    // And just within this crate
+    let back = unsafe { give_back(mem::transmute(magic)) };
+    assert_eq!(magic, back);
+}
diff --git a/src/test/run-make-fulldeps/extern-fn-with-union/testcrate.rs b/src/test/run-make-fulldeps/extern-fn-with-union/testcrate.rs
new file mode 100644
index 000000000..28d91ff37
--- /dev/null
+++ b/src/test/run-make-fulldeps/extern-fn-with-union/testcrate.rs
@@ -0,0 +1,11 @@
+#![crate_type = "lib"]
+
+#[repr(C)]
+pub struct TestUnion {
+    _val: u64,
+}
+
+#[link(name = "ctest", kind = "static")]
+extern "C" {
+    pub fn give_back(tu: TestUnion) -> u64;
+}
-- 
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