From c9b4c5bd076a9c29b5eb5767f8ef6d77ad113597 Mon Sep 17 00:00:00 2001
From: Ye Luo <yeluo@anl.gov>
Date: Tue, 11 May 2021 20:50:24 -0500
Subject: [PATCH] More const

---
 src/QMCWaveFunctions/Jastrow/DiffTwoBodyJastrowOrbital.h      | 3 ++-
 src/QMCWaveFunctions/tests/test_DiffTwoBodyJastrowOrbital.cpp | 2 +-
 2 files changed, 3 insertions(+), 2 deletions(-)

diff --git a/src/QMCWaveFunctions/Jastrow/DiffTwoBodyJastrowOrbital.h b/src/QMCWaveFunctions/Jastrow/DiffTwoBodyJastrowOrbital.h
index 6f3bfe11c2..b260a6c460 100644
--- a/src/QMCWaveFunctions/Jastrow/DiffTwoBodyJastrowOrbital.h
+++ b/src/QMCWaveFunctions/Jastrow/DiffTwoBodyJastrowOrbital.h
@@ -51,7 +51,8 @@ class DiffTwoBodyJastrowOrbital : public DiffWaveFunctionComponent
 
 public:
   // return for testing
-  std::vector<FT*>& getPairFunctions() { return F; }
+  const std::vector<FT*>& getPairFunctions() const { return F; }
+
   ///constructor
   DiffTwoBodyJastrowOrbital(ParticleSet& p) : NumVars(0), my_table_ID_(p.addTable(p))
   {
diff --git a/src/QMCWaveFunctions/tests/test_DiffTwoBodyJastrowOrbital.cpp b/src/QMCWaveFunctions/tests/test_DiffTwoBodyJastrowOrbital.cpp
index edc4f997ee..1774a92bd0 100644
--- a/src/QMCWaveFunctions/tests/test_DiffTwoBodyJastrowOrbital.cpp
+++ b/src/QMCWaveFunctions/tests/test_DiffTwoBodyJastrowOrbital.cpp
@@ -348,7 +348,7 @@ TEST_CASE("DiffTwoBodyJastrowOrbital Jastrow three particles of three types", "[
   // setting u,p doesn't set d,p
   jorb.addFunc(1, 2, &j2b);
 
-  std::vector<FakeJastrow*>& F = jorb.getPairFunctions();
+  auto& F = jorb.getPairFunctions();
   for (size_t i = 0; i < F.size(); ++i)
     CHECK(F[i] != nullptr);
 }