Fix undefined behavior in meanParticleVelocity (ECP-WarpX#4614)

ax3l · Jan 16, 2024 · 11e2a17 · 11e2a17
1 parent a3e04a7
commit 11e2a17
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/Source/Particles/WarpXParticleContainer.cpp b/Source/Particles/WarpXParticleContainer.cpp
@@ -1287,7 +1287,7 @@ std::array<ParticleReal, 3> WarpXParticleContainer::meanParticleVelocity(bool lo
         ParallelDescriptor::ReduceLongSum(np_total);
     }
 
-    std::array<amrex::ParticleReal, 3> mean_v;
+    std::array<amrex::ParticleReal, 3> mean_v = {0,0,0};
     if (np_total > 0) {
         mean_v[0] = vx_total / np_total;
         mean_v[1] = vy_total / np_total;