1 files changed, 6 insertions, 4 deletions
diff --git a/Source/Parser/WarpXParser.H b/Source/Parser/WarpXParser.H
index 863b35fb8..703b1effc 100644
--- a/Source/Parser/WarpXParser.H
+++ b/Source/Parser/WarpXParser.H
@@ -21,7 +21,7 @@
 #include <omp.h>
 #endif
 
-class GpuParser;
+template <int N> class GpuParser;
 
 class WarpXParser
 {
@@ -56,7 +56,7 @@ public:
 
     std::set<std::string> symbols () const;
 
-    friend class GpuParser;
+    template <int N> friend class GpuParser;
 
 private:
     void clear ();
@@ -71,9 +71,11 @@ private:
 #ifdef _OPENMP
     std::vector<struct wp_parser*> m_parser;
     mutable std::vector<std::array<amrex::Real,16> > m_variables;
+    mutable std::vector<std::vector<std::string> > m_varnames;
 #else
     struct wp_parser* m_parser = nullptr;
     mutable std::array<amrex::Real,16> m_variables;
+    mutable std::vector<std::string> m_varnames;
 #endif
 };
 
@@ -82,9 +84,9 @@ amrex::Real
 WarpXParser::eval () const noexcept
 {
 #ifdef _OPENMP
-    return wp_ast_eval(m_parser[omp_get_thread_num()]->ast);
+    return wp_ast_eval(m_parser[omp_get_thread_num()]->ast,nullptr);
 #else
-    return wp_ast_eval(m_parser->ast);
+    return wp_ast_eval(m_parser->ast,nullptr);
 #endif
 }