From a72d63c5e803b55e9359565758fb87c9146c029e Mon Sep 17 00:00:00 2001
From: RevathiJambunathan <revanathan@gmail.com>
Date: Tue, 22 Nov 2022 11:17:48 -0800
Subject: [PATCH] explicit instantiation of type

---
 Source/BoundaryConditions/PML.H | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/Source/BoundaryConditions/PML.H b/Source/BoundaryConditions/PML.H
index c7055ee88..2cbfaa888 100644
--- a/Source/BoundaryConditions/PML.H
+++ b/Source/BoundaryConditions/PML.H
@@ -58,6 +58,8 @@ struct SigmaBox
 
     using SigmaVect = std::array<Sigma,AMREX_SPACEDIM>;
 
+    using value_type = void; // needed by amrex::FabArray
+
     SigmaVect sigma;
     SigmaVect sigma_cumsum;
     SigmaVect sigma_star;