diff --git a/src/V3AstInlines.h b/src/V3AstInlines.h
index cb13fa21a..3542839b1 100644
--- a/src/V3AstInlines.h
+++ b/src/V3AstInlines.h
@@ -34,7 +34,7 @@ int AstNode::widthInstrs() const {
     return (!dtypep() ? 1 : (dtypep()->isWide() ? dtypep()->widthWords() : 1));
 }
 bool AstNode::isDouble() const VL_MT_STABLE {
-    return dtypep() && VN_IS(dtypep(), BasicDType) && VN_AS(dtypep(), BasicDType)->isDouble();
+    return dtypep() && dtypep()->basicp() && dtypep()->basicp()->isDouble();
 }
 bool AstNode::isString() const VL_MT_STABLE {
     return dtypep() && dtypep()->basicp() && dtypep()->basicp()->isString();
diff --git a/src/V3Number.h b/src/V3Number.h
index 5b6fa517e..85cd4d150 100644
--- a/src/V3Number.h
+++ b/src/V3Number.h
@@ -408,7 +408,7 @@ public:
         if (bit < 0) return false;
         if (bit >= m_data.width()) return !bitIsXZ(m_data.width() - 1);
         const ValueAndX v = m_data.num()[bit / 32];
-        return ((v.m_value & (1UL << (bit & 31))) == 0 && !(v.m_valueX & (1UL << (bit & 31))));
+        return ((v.m_value | v.m_valueX) & (1UL << (bit & 31))) == 0;
     }
     bool bitIs1(int bit) const VL_MT_SAFE {
         if (!isNumber()) return false;
diff --git a/test_regress/t/t_class_param.v b/test_regress/t/t_class_param.v
index 08dd1f61b..38757c1a9 100644
--- a/test_regress/t/t_class_param.v
+++ b/test_regress/t/t_class_param.v
@@ -62,7 +62,7 @@ class Sum #(type T);
    static int sum;
    static function void add(T element);
       sum += int'(element);
-      endfunction
+   endfunction
 endclass
 
 class IntQueue;
@@ -221,8 +221,11 @@ module t (/*AUTOARG*/);
       qi.q = '{2, 4, 6, 0, 2};
       if (qi.getSum() != 14) $stop;
       Sum#(int)::add(arr[0]);
-      if(Sum#(int)::sum != 16) $stop;
-      if(Sum#(real)::sum != 0) $stop;
+      if (Sum#(int)::sum != 16) $stop;
+
+      if (Sum#(real)::sum != 0) $stop;
+      Sum#(real)::add(1.9);  // rounds
+      if (Sum#(real)::sum != 2) $stop;
 
       if (ClsParam#(ClsStatic)::param_t::x != 1) $stop;
       if (ClsParam#(ClsStatic)::param_t::get_2() != 2) $stop;
@@ -231,7 +234,7 @@ module t (/*AUTOARG*/);
       if (cls_param_field.get(2) != 7) $stop;
 
       dict_op.set("abcd", 1);
-      if(dict_op.get("abcd") != 1) $stop;
+      if (dict_op.get("abcd") != 1) $stop;
 
       if (getter1.get_1() != 1) $stop;
       if (Getter1#()::get_1() != 1) $stop;
diff --git a/test_regress/t/t_cover_toggle.out b/test_regress/t/t_cover_toggle.out
index 065e014a0..5d0010643 100644
--- a/test_regress/t/t_cover_toggle.out
+++ b/test_regress/t/t_cover_toggle.out
@@ -12,7 +12,7 @@
         
  000019    input clk;
            input real check_real; // Check issue #2741
- 000021    input real check_array_real [1:0];
+           input real check_array_real [1:0];
            input string check_string; // Check issue #2766
         
            typedef struct packed {
diff --git a/test_regress/t/t_cover_toggle__points.out b/test_regress/t/t_cover_toggle__points.out
index 17279cd14..7e220867b 100644
--- a/test_regress/t/t_cover_toggle__points.out
+++ b/test_regress/t/t_cover_toggle__points.out
@@ -13,9 +13,7 @@
  000019    input clk;
 +000019  point: comment=clk hier=top.t
            input real check_real; // Check issue #2741
- 000021    input real check_array_real [1:0];
-+000021  point: comment=check_array_real[0] hier=top.t
-+000021  point: comment=check_array_real[1] hier=top.t
+           input real check_array_real [1:0];
            input string check_string; // Check issue #2766
         
            typedef struct packed {
diff --git a/test_regress/t/t_dpi_open_oob_bad.out b/test_regress/t/t_dpi_open_oob_bad.out
index a40343874..b89413bf3 100644
--- a/test_regress/t/t_dpi_open_oob_bad.out
+++ b/test_regress/t/t_dpi_open_oob_bad.out
@@ -5,14 +5,22 @@ dpii_int_u3:
 %Warning: DPI svOpenArrayHandle function index 1 out of bounds; 10 outside [2:-2].
 %Warning: DPI svOpenArrayHandle function called on 3 dimensional array using 1 dimensional function.
 dpii_real_u1:
-%Warning: DPI svOpenArrayHandle function unsupported datatype (5).
-%Warning: DPI svOpenArrayHandle function unsupported datatype (5).
-%Warning: DPI svOpenArrayHandle function unsupported datatype (5).
-%Warning: DPI svOpenArrayHandle function unsupported datatype (5).
-%Warning: DPI svOpenArrayHandle function unsupported datatype (5).
-%Warning: DPI svOpenArrayHandle function unsupported datatype (5).
-%Warning: DPI svOpenArrayHandle function unsupported datatype (5).
-%Warning: DPI svOpenArrayHandle function unsupported datatype (5).
+%Warning: DPI svOpenArrayHandle function unsupported datatype (8).
+%Warning: DPI svOpenArrayHandle function unsupported datatype (8).
+%Warning: DPI svOpenArrayHandle function unsupported datatype (8).
+%Warning: DPI svOpenArrayHandle function unsupported datatype (8).
+%Warning: DPI svOpenArrayHandle function unsupported datatype (8).
+%Warning: DPI svOpenArrayHandle function unsupported datatype (8).
+%Warning: DPI svOpenArrayHandle function unsupported datatype (8).
+%Warning: DPI svOpenArrayHandle function unsupported datatype (8).
+%Warning: DPI svOpenArrayHandle function unsupported datatype (8).
+%Warning: DPI svOpenArrayHandle function unsupported datatype (8).
+%Warning: DPI svOpenArrayHandle function unsupported datatype (8).
+%Warning: DPI svOpenArrayHandle function unsupported datatype (8).
+%Warning: DPI svOpenArrayHandle function unsupported datatype (8).
+%Warning: DPI svOpenArrayHandle function unsupported datatype (8).
+%Warning: DPI svOpenArrayHandle function unsupported datatype (8).
+%Warning: DPI svOpenArrayHandle function unsupported datatype (8).
 dpii_bit_u6:
 %Warning: DPI svOpenArrayHandle function called on 6 dimensional array using -1 dimensional function.
 %Warning: DPI svOpenArrayHandle function called on 6 dimensional array using -1 dimensional function.