Adding upstream version 1.64.0+dfsg1.upstream/1.64.0+dfsg1

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

1 files changed, 25 insertions, 0 deletions

diff --git a/src/test/ui/consts/const-vec-of-fns.rs b/src/test/ui/consts/const-vec-of-fns.rs
new file mode 100644
index 000000000..6d90b066b
--- /dev/null
+++ b/src/test/ui/consts/const-vec-of-fns.rs
@@ -0,0 +1,25 @@
+// run-pass
+// pretty-expanded FIXME #23616
+#![allow(non_upper_case_globals)]
+
+/*!
+ * Try to double-check that static fns have the right size (with or
+ * without dummy env ptr, as appropriate) by iterating a size-2 array.
+ * If the static size differs from the runtime size, the second element
+ * should be read as a null or otherwise wrong pointer and crash.
+ */
+
+fn f() { }
+static bare_fns: &'static [fn()] = &[f, f];
+struct S<F: FnOnce()>(F);
+static mut closures: &'static mut [S<fn()>] = &mut [S(f as fn()), S(f as fn())];
+
+pub fn main() {
+    unsafe {
+        for &bare_fn in bare_fns { bare_fn() }
+        for closure in &mut *closures {
+            let S(ref mut closure) = *closure;
+            (*closure)()
+        }
+    }
+}