From dcfec762a835e73d234eac212862114d5b6904dc Mon Sep 17 00:00:00 2001
From: Katharine Hyatt <kshyatt@users.noreply.github.com>
Date: Fri, 3 Nov 2023 15:43:53 -0400
Subject: [PATCH] Test implicit in-place Allgatherv (#781)

---
 test/test_allgatherv.jl | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/test/test_allgatherv.jl b/test/test_allgatherv.jl
index 517a9a34c..d78e2b4ab 100644
--- a/test/test_allgatherv.jl
+++ b/test/test_allgatherv.jl
@@ -27,6 +27,12 @@ for T in MPITestTypes
     synchronize()
     MPI.Allgatherv!(MPI.IN_PLACE, VBuffer(B, counts), comm)
     @test B == ArrayType{T}(check)
+    
+    # Test implicit MPI_IN_PLACE
+    B = ArrayType(fill(T(rank), sum(counts)))
+    synchronize()
+    MPI.Allgatherv!(VBuffer(B, counts), comm)
+    @test B == ArrayType{T}(check)
 end
 
 MPI.Finalize()