fix for dpi_export_unpack

docs/CONTRIBUTORS

@@ -325,3 +325,4 @@ Yogish Sekhar
 24bit-xjkp
 Zubin Jain
 Muzaffer Kal
+Yilin Li

src/V3EmitCFunc.cpp

@@ -463,7 +463,9 @@ void EmitCFunc::emitVarReset(const string& prefix, AstVar* varp, bool constructi
     // 'constructing' indicates that the object was just constructed, so if it is a string or
     // something that starts off clear already, no need to clear it again
     AstNodeDType* const dtypep = varp->dtypep()->skipRefp();
-    const string vlSelf = VSelfPointerText::replaceThis(m_useSelfForThis, "this->");
+    const string vlSelf = m_cfuncp && m_cfuncp->isStatic() ? 
+                          "vlSymsp->TOP__" + m_modp->name() + "." :
+                          VSelfPointerText::replaceThis(m_useSelfForThis, "this->");
     const string varNameProtected
         = ((VN_IS(m_modp, Class) || varp->isFuncLocal()) || !prefix.empty())
               ? varp->nameProtect()

test_regress/t/t_dpi_export_unpack.py

@@ -0,0 +1,14 @@
+#!/usr/bin/env python3
+# DESCRIPTION: Verilator: Verilog Test for dpi unpack array
+#
+# author: Yilin Li
+
+import vltest_bootstrap
+
+test.scenarios('simulator')
+
+test.compile(verilator_flags2=["--binary"])
+
+test.execute()
+
+test.passes()

test_regress/t/t_dpi_export_unpack.v

@@ -0,0 +1,23 @@
+export "DPI-C" task readHEX;
+export "DPI-C" task loadHEX;
+
+task readHEX;
+  input string file;
+  output logic [7:0] stimuli[32'h00010000];
+  $readmemh(file, stimuli);
+endtask
+
+task loadHEX;
+  input string file;
+  logic [7:0] stimuli[32'h00010000];
+  readHEX(file, stimuli);
+endtask
+
+module tb();
+
+  logic [7:0] result[32'h00010000];
+  initial begin
+    loadHEX("dummy");
+  end
+
+endmodule