Merging upstream version 1.68.2+dfsg1.

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

1 files changed, 12 insertions, 0 deletions

diff --git a/tests/ui/consts/const-eval/infinite_loop.rs b/tests/ui/consts/const-eval/infinite_loop.rs
new file mode 100644
index 000000000..4babc9a28
--- /dev/null
+++ b/tests/ui/consts/const-eval/infinite_loop.rs
@@ -0,0 +1,12 @@
+fn main() {
+    // Tests the Collatz conjecture with an incorrect base case (0 instead of 1).
+    // The value of `n` will loop indefinitely (4 - 2 - 1 - 4).
+    let _ = [(); {
+        let mut n = 113383; // #20 in https://oeis.org/A006884
+        while n != 0 {
+            //~^ ERROR evaluation of constant value failed
+            n = if n % 2 == 0 { n/2 } else { 3*n + 1 };
+        }
+        n
+    }];
+}