From 0a827aa7bf993ca6ac0bb608183fc695a2b49481 Mon Sep 17 00:00:00 2001
From: ferben <ferben@debian.felix.com>
Date: Wed, 11 Mar 2020 08:52:52 +0000
Subject: [PATCH] Added Hadrons_Error in case blockSize is set too large

---
 Hadrons/Modules/MContraction/A2AMesonField.hpp | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/Hadrons/Modules/MContraction/A2AMesonField.hpp b/Hadrons/Modules/MContraction/A2AMesonField.hpp
index d3f90959..cf1b9415 100644
--- a/Hadrons/Modules/MContraction/A2AMesonField.hpp
+++ b/Hadrons/Modules/MContraction/A2AMesonField.hpp
@@ -231,6 +231,11 @@ void TA2AMesonField<FImpl>::execute(void)
     int block      = par().block;
     int cacheBlock = par().cacheBlock;
 
+    if (N_i < block || N_j < block)
+    {
+        HADRONS_ERROR(Range, "blockSize must not exceed size of input vector.");
+    }
+
     LOG(Message) << "Computing all-to-all meson fields" << std::endl;
     LOG(Message) << "Left: '" << par().left << "' Right: '" << par().right << "'" << std::endl;
     LOG(Message) << "Momenta:" << std::endl;