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I am debugging a problem with my custom datatype for sc_trace. I use my datatype for sc_signal, which is inside a sc_vector. Then I trace each signal inside the sc_vector. To narrow down my problem I removed all unnecessary parts for debugging. I still get the error, even though I'm not tracing a single signal. My MWE: main.cpp: // SystemC_FirstTest.cpp : Defines the entry point for the console application. // #pragma once //#define WIN32_LEAN_AND_MEAN //needed for tcp (winsock, ws2) #include <systemc.h> #include "globals.h" SC_MODULE(mA) { sc_inout<int> SC_NAMED(A); void stim() { wait(1, SC_SEC); A.write(0); wait(1, SC_SEC); A.write(1); }; SC_CTOR(mA) { SC_THREAD(stim); } }; SC_MODULE(mB) { sc_inout<int> SC_NAMED(A); void stim() { wait(0.8, SC_SEC); A.write(2); wait(1.1, SC_SEC); A.write(3); }; SC_CTOR(mB) { SC_THREAD(stim); } }; int sc_main(int argc, char** argv) { sc_vector< sc_signal<int, SC_MANY_WRITERS > > stub_vec("top_stub", 5); sc_vector< sc_signal<TraceVector, SC_MANY_WRITERS > > sim_vec("top_sim_", 5); mA SC_NAMED(modA); mB SC_NAMED(modB); modA.A(stub_vec[0]); modB.A(stub_vec[0]); sc_trace_file *tf = sc_create_vcd_trace_file("traces"); if (!tf) { cout << "Empty TraceFile could not be generated." << endl; } //sc_trace(tf, &(stub_vec[0]), "yolo"); //sc_signal<int, SC_MANY_WRITERS > testSig; //sc_trace(tf, &testSig, "yolo_more"); //for (int i = 0; i < 5; i++) { //sc_trace(tf, &(sim_vec[i]), sim_vec[i].name() ); //} // start simulation sc_start(); sc_close_vcd_trace_file(tf); return 0; } globals.h: #pragma once #include <systemc.h> #include <vector> // Vector that is traceable by sc_trace class TraceVector { private: std::vector<int> vec; public: // Methods for accessing list const std::vector<int>& read() const { return vec; } void write(std::vector<int> var) { if (var.size() != 4) { throw std::invalid_argument("Argument is not size 4!"); } this->vec.assign(var.begin(), var.end()); } // CTOR TraceVector() { vec.reserve(4); } // CTOR for init values TraceVector(std::vector<int> var) { if (var.size() != 4) { throw std::invalid_argument("Argument is not size 4!"); } vec = var; } // Required by sc_signal<> and sc_fifo<> TraceVector operator= (const TraceVector& var) { write(var.read()); return *this; } // Required by sc_signal<> bool operator== (const TraceVector& var) const { auto temp = var.read(); // size check if (temp.size() != vec.size()) { return false; } // element wise comparison bool equal = std::equal(vec.begin(), vec.end(), temp.begin()); return equal; } }; // Required functions by SystemC ostream& operator<< (ostream& os, const TraceVector& var); void sc_trace(sc_trace_file* tf, const TraceVector& var, const std::string& nm); globals.cpp: #include "globals.h" // Required functions by SystemC ostream& operator<< (ostream& os, const TraceVector& var) { os << "{"; for (auto& val : var.read()) { os << val << " "; } os << "}"; return os; } void sc_trace(sc_trace_file* tf, const TraceVector& var, const std::string& nm) { int pos = 0; //static int temp = 0; //sc_core::sc_trace(tf, temp, nm + "_test"); for (auto& val : var.read()) { // use namespace, compiler otherwise chooses wrong function sc_core::sc_trace(tf, val, nm + "." + std::to_string(pos++)); } } Where is the vector subscript error coming from? Why is it even appearing when I'm not tracing a signal with my custom type? When I completely remove tracing, no error appears.

Hello, Is there a way to generate execution trace for a SystemC project? Thanks, R.Adiga