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-rw-r--r--src/test/ui/swap-overlapping.rs44
1 files changed, 44 insertions, 0 deletions
diff --git a/src/test/ui/swap-overlapping.rs b/src/test/ui/swap-overlapping.rs
new file mode 100644
index 000000000..85b357e0c
--- /dev/null
+++ b/src/test/ui/swap-overlapping.rs
@@ -0,0 +1,44 @@
+// run-pass
+
+#![allow(dead_code)]
+// Issue #5041 - avoid overlapping memcpy when src and dest of a swap are the same
+
+// pretty-expanded FIXME #23616
+
+use std::ptr;
+
+pub fn main() {
+ let mut test = TestDescAndFn {
+ desc: TestDesc {
+ name: TestName::DynTestName("test".to_string()),
+ should_fail: false
+ },
+ testfn: TestFn::DynTestFn(22),
+ };
+ do_swap(&mut test);
+}
+
+fn do_swap(test: &mut TestDescAndFn) {
+ unsafe {
+ ptr::swap(test, test);
+ }
+}
+
+pub enum TestName {
+ DynTestName(String)
+}
+
+pub enum TestFn {
+ DynTestFn(isize),
+ DynBenchFn(isize),
+}
+
+pub struct TestDesc {
+ name: TestName,
+ should_fail: bool
+}
+
+pub struct TestDescAndFn {
+ desc: TestDesc,
+ testfn: TestFn,
+}