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-rw-r--r--Source/Diagnostics/ParticleDiag/ParticleDiag.cpp2
1 files changed, 1 insertions, 1 deletions
diff --git a/Source/Diagnostics/ParticleDiag/ParticleDiag.cpp b/Source/Diagnostics/ParticleDiag/ParticleDiag.cpp
index 6622fd9bd..18fbb4f59 100644
--- a/Source/Diagnostics/ParticleDiag/ParticleDiag.cpp
+++ b/Source/Diagnostics/ParticleDiag/ParticleDiag.cpp
@@ -60,7 +60,7 @@ ParticleDiag::ParticleDiag(std::string diag_name, std::string name, WarpXParticl
buf);
if (m_do_parser_filter) {
- std::string function_string = "";
+ std::string function_string;
utils::parser::Store_parserString(
pp_diag_name_species_name,"plot_filter_function(t,x,y,z,ux,uy,uz)", function_string);
m_particle_filter_parser = std::make_unique<amrex::Parser>(