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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-17 12:19:03 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-17 12:19:03 +0000
commit64d98f8ee037282c35007b64c2649055c56af1db (patch)
tree5492bcf97fce41ee1c0b1cc2add283f3e66cdab0 /tests/ui/consts/const-ptr-nonnull-rpass.rs
parentAdding debian version 1.67.1+dfsg1-1. (diff)
downloadrustc-64d98f8ee037282c35007b64c2649055c56af1db.tar.xz
rustc-64d98f8ee037282c35007b64c2649055c56af1db.zip
Merging upstream version 1.68.2+dfsg1.
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'tests/ui/consts/const-ptr-nonnull-rpass.rs')
-rw-r--r--tests/ui/consts/const-ptr-nonnull-rpass.rs17
1 files changed, 17 insertions, 0 deletions
diff --git a/tests/ui/consts/const-ptr-nonnull-rpass.rs b/tests/ui/consts/const-ptr-nonnull-rpass.rs
new file mode 100644
index 000000000..67d52ad08
--- /dev/null
+++ b/tests/ui/consts/const-ptr-nonnull-rpass.rs
@@ -0,0 +1,17 @@
+// run-pass
+
+#![feature(ptr_internals, test)]
+
+extern crate test;
+use test::black_box as b; // prevent promotion of the argument and const-propagation of the result
+
+use std::ptr::NonNull;
+
+const DANGLING: NonNull<u32> = NonNull::dangling();
+const CASTED: NonNull<u32> = NonNull::cast(NonNull::<i32>::dangling());
+
+pub fn main() {
+ // Be super-extra paranoid and cast the fn items to fn pointers before blackboxing them.
+ assert_eq!(DANGLING, b::<fn() -> _>(NonNull::dangling)());
+ assert_eq!(CASTED, b::<fn() -> _>(NonNull::dangling)());
+}