diff --git a/tgt-vvp/eval_vec4.c b/tgt-vvp/eval_vec4.c
index f92eb27db..357830ee5 100644
--- a/tgt-vvp/eval_vec4.c
+++ b/tgt-vvp/eval_vec4.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2013-2020 Stephen Williams (steve@icarus.com)
+ * Copyright (c) 2013-2026 Stephen Williams (steve@icarus.com)
  *
  *    This source code is free software; you can redistribute it
  *    and/or modify it in source code form under the terms of the GNU
@@ -462,6 +462,8 @@ static void draw_binary_vec4_logical(ivl_expr_t expr, char op)
 	    jmp_type = "1";
 	    break;
 	  default:
+	    opcode = "<invalid>"
+	    jmp_type = "<invalid>"
 	    assert(0);
 	    break;
       }
diff --git a/vpi_modules.cc b/vpi_modules.cc
index 17a42c69f..4aecff2db 100644
--- a/vpi_modules.cc
+++ b/vpi_modules.cc
@@ -126,6 +126,7 @@ s_vpi_vecval vpip_calc_clog2(vpiHandle)
 }
 void        vpip_count_drivers(vpiHandle, unsigned, unsigned [4]) { }
 void        vpip_format_strength(char*, s_vpi_value*, unsigned) { }
+void        vpip_format_pretty(vpiHandle) { }
 void        vpip_make_systf_system_defined(vpiHandle) { }
 void        vpip_mcd_rawwrite(PLI_UINT32, const char*, size_t) { }
 void        vpip_set_return_value(int) { }
@@ -230,6 +231,7 @@ vpip_routines_s vpi_routines = {
     .calc_clog2                 = vpip_calc_clog2,
     .count_drivers              = vpip_count_drivers,
     .format_strength            = vpip_format_strength,
+    .format_pretty              = vpip_format_pretty,
     .make_systf_system_defined  = vpip_make_systf_system_defined,
     .mcd_rawwrite               = vpip_mcd_rawwrite,
     .set_return_value           = vpip_set_return_value,
diff --git a/vvp/vpi_bit.cc b/vvp/vpi_bit.cc
index ad76f9a22..9b956861d 100644
--- a/vvp/vpi_bit.cc
+++ b/vvp/vpi_bit.cc
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2020-2025 Cary R. (cygcary@yahoo.com)
+ * Copyright (C) 2020-2026 Cary R. (cygcary@yahoo.com)
  *
  *    This source code is free software; you can redistribute it
  *    and/or modify it in source code form under the terms of the GNU
@@ -57,6 +57,7 @@ static int bit_get_type(const __vpiBit*rfp)
 	    return vpiRegBit;
       }
       assert(0);
+      return 0;
 }
 
 static int bit_get(int code, vpiHandle ref)