diff --git a/src/V3EmitCFunc.cpp b/src/V3EmitCFunc.cpp
index 786b8368c..2aa4f2342 100644
--- a/src/V3EmitCFunc.cpp
+++ b/src/V3EmitCFunc.cpp
@@ -308,7 +308,8 @@ void EmitCFunc::displayArg(AstNode* dispp, AstNode** elistp, bool isScan, const
     }
     emitDispState.pushFormat(pfmt);
     if (!ignore) {
-        if (argp->dtypep()->basicp()->keyword() == VBasicDTypeKwd::STRING) {
+        if (argp->dtypep()->basicp()
+            && argp->dtypep()->basicp()->keyword() == VBasicDTypeKwd::STRING) {
             // string in SystemVerilog is std::string in C++ which is not POD
             emitDispState.pushArg(' ', nullptr, "-1");
         } else {
diff --git a/test_regress/t/t_with.v b/test_regress/t/t_with.v
index 3a3da8ff2..64684e46c 100644
--- a/test_regress/t/t_with.v
+++ b/test_regress/t/t_with.v
@@ -6,40 +6,52 @@
 // any use, without warranty, 2020 by Wilson Snyder.
 // SPDX-License-Identifier: CC0-1.0
 
+`define stop $stop
+`define checkh(gotv,expv) do if ((gotv) !== (expv)) begin $write("%%Error: %s:%0d:  got='h%x exp='h%x\n", `__FILE__,`__LINE__, (gotv), (expv)); `stop; end while(0);
+
 module t (/*AUTOARG*/);
 
    initial begin
       int tofind;
       int aliases[$];
       int found[$];
-      int id;
       int i;
 
       aliases = '{ 1, 4, 6, 8};
       tofind = 6;
       found = aliases.find with (item == 1);
+      `checkh(found.size, 1);
       found = aliases.find(j) with (j == tofind);
+      `checkh(found.size, 1);
       // And as function
       aliases.find(i) with (i == tofind);
 
       // No parenthesis
-      found = aliases.find with (item == i);
-      aliases.find with (item == i);
+      tofind = 0;
+      found = aliases.find with (item == tofind);
+      `checkh(found.size, 0);
+      aliases.find with (item == tofind);
 
-`ifdef VERILATOR
-      // No expression (e.g. x.randomize() with {})
-      // Hack until randomize() supported
-      found = aliases.sort() with {};
-`endif
+      // bug3387
+      i = aliases.sum();
+      `checkh(i, 'h13);
+      i = aliases.sum() with (2'(item));
+      `checkh(i, 'h3);
 
       // Unique (array method)
-      id = 4;
-      found = aliases.find with (id);
-      found = aliases.find() with (item == id);
-      found = aliases.find(i) with (i == id);
+      tofind = 4;
+      found = aliases.find with (tofind);  // "true" match
+      `checkh(found.size, 4);
+      found = aliases.find() with (item == tofind);
+      `checkh(found.size, 1);
+      found = aliases.find(i) with (i == tofind);
+      `checkh(found.size, 1);
       i = aliases.or(v) with (v);
+      `checkh(i, 'hf);
       i = aliases.and(v) with (v);
+      `checkh(i, 0);
       i = aliases.xor(v) with (v);
+      `checkh(i, 'hb);
 
       $write("*-* All Finished *-*\n");
       $finish;