Merging upstream version 1.68.2+dfsg1.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 35 insertions, 0 deletions

diff --git a/tests/ui/borrowck/borrowck-bad-nested-calls-move.rs b/tests/ui/borrowck/borrowck-bad-nested-calls-move.rs
new file mode 100644
index 000000000..b2afb6391
--- /dev/null
+++ b/tests/ui/borrowck/borrowck-bad-nested-calls-move.rs
@@ -0,0 +1,35 @@
+// Test that we detect nested calls that could free pointers evaluated
+// for earlier arguments.
+
+
+
+fn rewrite(v: &mut Box<usize>) -> usize {
+    *v = Box::new(22);
+    **v
+}
+
+fn add(v: &usize, w: Box<usize>) -> usize {
+    *v + *w
+}
+
+fn implicit() {
+    let mut a: Box<_> = Box::new(1);
+
+    // Note the danger here:
+    //
+    //    the pointer for the first argument has already been
+    //    evaluated, but it gets moved when evaluating the second
+    //    argument!
+    add(
+        &*a,
+        a); //~ ERROR cannot move
+}
+
+fn explicit() {
+    let mut a: Box<_> = Box::new(1);
+    add(
+        &*a,
+        a); //~ ERROR cannot move
+}
+
+fn main() {}