From c70114d836e5bc36e2104188867e548e90ab38f4 Mon Sep 17 00:00:00 2001
From: Mingwei Samuel <mingwei.samuel@gmail.com>
Date: Fri, 28 Jun 2024 13:55:53 -0700
Subject: [PATCH] fix(variadics): fix `HomogenousVariadic` `get` and `get_mut`
 only returning `None` (#1325)

---
 variadics/src/lib.rs | 13 +++++++++++--
 1 file changed, 11 insertions(+), 2 deletions(-)

diff --git a/variadics/src/lib.rs b/variadics/src/lib.rs
index ac5dbe443c8a..24c643d6beca 100644
--- a/variadics/src/lib.rs
+++ b/variadics/src/lib.rs
@@ -330,7 +330,7 @@ where
         if i == 0 {
             Some(item)
         } else {
-            rest.get(i)
+            rest.get(i - 1)
         }
     }
     fn get_mut(&mut self, i: usize) -> Option<&mut T> {
@@ -338,7 +338,7 @@ where
         if i == 0 {
             Some(item)
         } else {
-            rest.get_mut(i)
+            rest.get_mut(i - 1)
         }
     }
 
@@ -470,4 +470,13 @@ mod test {
         );
         assert!(ref_iter.next().is_none());
     }
+
+    #[test]
+    fn test_homogenous_get() {
+        let mut var = var_expr!(0, 1, 2, 3, 4);
+        for i in 0..5 {
+            assert_eq!(Some(i), var.get(i).copied());
+            assert_eq!(Some(i), var.get_mut(i).copied());
+        }
+    }
 }