Verilog format

test_regress/t/t_constraint_countbits_unsup.out

@@ -1,5 +1,5 @@
-%Error-UNSUPPORTED: t/t_constraint_countbits_unsup.v:12:21: Unsupported: non-constant control in $countbits inside constraint
+%Error-UNSUPPORTED: t/t_constraint_countbits_unsup.v:12:20: Unsupported: non-constant control in $countbits inside constraint
-   12 |   constraint cons { $countbits(value, ctrl) == 3; }
+   12 |   constraint cons {$countbits(value, ctrl) == 3;}
       |                    ^~~~~~~~~~
                     ... For error description see https://verilator.org/warn/UNSUPPORTED?v=latest
 %Error: Exiting due to

test_regress/t/t_constraint_countbits_unsup.v

@@ -1,7 +1,7 @@
 // DESCRIPTION: Verilator: Verilog Test module
 //
-// This file ONLY is placed under the Creative Commons Public Domain, for
+// This file ONLY is placed under the Creative Commons Public Domain.
-// any use, without warranty, 2026 by PlanV GmbH.
+// SPDX-FileCopyrightText: 2026 PlanV GmbH
 // SPDX-License-Identifier: CC0-1.0
 
 // Test: non-constant control in $countbits inside constraint (unsupported)
@@ -9,7 +9,7 @@
 class Packet;
   rand bit [7:0] value;
   bit ctrl;
-  constraint cons { $countbits(value, ctrl) == 3; }
+  constraint cons {$countbits(value, ctrl) == 3;}
 endclass
 
 module t;

test_regress/t/t_constraint_foreach_classref.v

@@ -1,7 +1,7 @@
 // DESCRIPTION: Verilator: Verilog Test module
 //
-// This file ONLY is placed under the Creative Commons Public Domain, for
+// This file ONLY is placed under the Creative Commons Public Domain.
-// any use, without warranty, 2026 by PlanV GmbH.
+// SPDX-FileCopyrightText: 2026 PlanV GmbH.
 // SPDX-License-Identifier: CC0-1.0
 
 // Test: Inline foreach constraints on dynamic arrays and queues of class objects

test_regress/t/t_constraint_global_nested_randmode.v

@@ -14,8 +14,8 @@ class InnerClass;
   rand bit [7:0] inner_val2;
 
   constraint inner_con {
-    inner_val1 inside {[8'd10:8'd50]};
+    inner_val1 inside {[8'd10 : 8'd50]};
-    inner_val2 inside {[8'd100:8'd200]};
+    inner_val2 inside {[8'd100 : 8'd200]};
   }
 
   function new();
@@ -28,9 +28,7 @@ class OuterClass;
   rand InnerClass nested_obj;
   rand bit [7:0] outer_val;
 
-  constraint outer_con {
+  constraint outer_con {outer_val inside {[8'd1 : 8'd20]};}
-    outer_val inside {[8'd1:8'd20]};
-  }
 
   function new();
     nested_obj = new();

test_regress/t/t_constraint_mode_ctor.v

@@ -9,8 +9,11 @@
 class ConstraintModeInCtor;
   rand bit [7:0] value;
 
-  constraint low_range_c { value < 50; };
+  constraint low_range_c {value < 50;}
-  constraint high_range_c { value >= 50; value < 200; };
+  constraint high_range_c {
+    value >= 50;
+    value < 200;
+  }
 
   function new;
     // Disable high_range_c in constructor - only low_range_c should be active

test_regress/t/t_constraint_mode_static.v

@@ -1,7 +1,7 @@
 // DESCRIPTION: Verilator: Verilog Test module
 //
-// This file ONLY is placed under the Creative Commons Public Domain, for
+// This file ONLY is placed under the Creative Commons Public Domain.
-// any use, without warranty, 2026 by PlanV GmbH.
+// SPDX-FileCopyrightText: 2026 PlanV GmbH.
 // SPDX-License-Identifier: CC0-1.0
 
 // Test static constraint_mode() support per IEEE 1800-2017 Section 18.4, 18.8
@@ -11,14 +11,10 @@ class StaticConstraintTest;
   rand bit [7:0] value;
 
   // Static constraint - shared across all instances
-  static constraint static_con {
+  static constraint static_con {value inside {[10 : 15]};}
-    value inside {[10:15]};
-  }
 
   // Non-static constraint for comparison
-  constraint instance_con {
+  constraint instance_con {value > 5;}
-    value > 5;
-  }
 endclass
 
 module t;
@@ -51,7 +47,7 @@ module t;
     obj1.instance_con.constraint_mode(1);
     for (int i = 0; i < 10; i++) begin
       void'(obj1.randomize());
-      if (!(obj1.value inside {[10:15]})) $stop;
+      if (!(obj1.value inside {[10 : 15]})) $stop;
       if (!(obj1.value > 5)) $stop;
     end
 

test_regress/t/t_constraint_sysfunc.v

@@ -1,7 +1,7 @@
 // DESCRIPTION: Verilator: Verilog Test module
 //
-// This file ONLY is placed under the Creative Commons Public Domain, for
+// This file ONLY is placed under the Creative Commons Public Domain.
-// any use, without warranty, 2026 by PlanV GmbH.
+// SPDX-FileCopyrightText: 2026 PlanV GmbH
 // SPDX-License-Identifier: CC0-1.0
 
 // Test: System functions ($onehot, $onehot0, $countbits, $clog2) inside
@@ -9,29 +9,29 @@
 
 class test_onehot;
   rand bit [7:0] value;
-  constraint c_hot { $onehot(value); }
+  constraint c_hot {$onehot(value);}
 endclass
 
 class test_onehot0;
   rand bit [7:0] value;
-  constraint c_hot0 { $onehot0(value); }
+  constraint c_hot0 {$onehot0(value);}
 endclass
 
 class test_countbits_ones;
   rand bit [7:0] value;
-  constraint c_bits { $countbits(value, '1) == 3; }
+  constraint c_bits {$countbits(value, '1) == 3;}
 endclass
 
 class test_countbits_zeros;
   rand bit [7:0] value;
-  constraint c_bits { $countbits(value, '0) == 6; }  // 6 zeros = 2 ones
+  constraint c_bits {$countbits(value, '0) == 6;}  // 6 zeros = 2 ones
 endclass
 
 class test_clog2;
   rand bit [7:0] data_width;
   rand bit [7:0] addr_bits;
-  constraint c_log { addr_bits == 8'($clog2(data_width)); }
+  constraint c_log {addr_bits == 8'($clog2(data_width));}
-  constraint c_nonzero { data_width > 0; }
+  constraint c_nonzero {data_width > 0;}
 endclass
 
 module t;
@@ -44,7 +44,7 @@ module t;
     automatic bit ok = 1'b1;
 
     // Test $onehot: exactly one bit set
-    repeat(20) begin
+    repeat (20) begin
       if (oh.randomize() == 0) $fatal(1, "$onehot randomize failed");
       if ($onehot(oh.value) !== 1'b1) begin
         $display("FAIL: $onehot value=%08b, $onehot=%0b", oh.value, $onehot(oh.value));
@@ -53,7 +53,7 @@ module t;
     end
 
     // Test $onehot0: zero or one bit set
-    repeat(20) begin
+    repeat (20) begin
       if (oh0.randomize() == 0) $fatal(1, "$onehot0 randomize failed");
       if ($onehot0(oh0.value) !== 1'b1) begin
         $display("FAIL: $onehot0 value=%08b, $onehot0=%0b", oh0.value, $onehot0(oh0.value));
@@ -62,31 +62,31 @@ module t;
     end
 
     // Test $countbits counting ones: exactly 3 ones
-    repeat(20) begin
+    repeat (20) begin
       if (cb1.randomize() == 0) $fatal(1, "$countbits('1) randomize failed");
       if ($countbits(cb1.value, '1) != 3) begin
-        $display("FAIL: $countbits('1) value=%08b, count=%0d",
+        $display("FAIL: $countbits('1) value=%08b, count=%0d", cb1.value, $countbits(cb1.value,
-                 cb1.value, $countbits(cb1.value, '1));
+                                                                                     '1));
         ok = 1'b0;
       end
     end
 
     // Test $countbits counting zeros: exactly 6 zeros (= 2 ones)
-    repeat(20) begin
+    repeat (20) begin
       if (cb0.randomize() == 0) $fatal(1, "$countbits('0) randomize failed");
       if ($countbits(cb0.value, '0) != 6) begin
-        $display("FAIL: $countbits('0) value=%08b, zeros=%0d ones=%0d",
+        $display("FAIL: $countbits('0) value=%08b, zeros=%0d ones=%0d", cb0.value,
-                 cb0.value, $countbits(cb0.value, '0), $countbits(cb0.value, '1));
+                 $countbits(cb0.value, '0), $countbits(cb0.value, '1));
         ok = 1'b0;
       end
     end
 
     // Test $clog2: addr_bits == $clog2(data_width)
-    repeat(20) begin
+    repeat (20) begin
       if (cl.randomize() == 0) $fatal(1, "$clog2 randomize failed");
       if (cl.addr_bits != 8'($clog2(cl.data_width))) begin
-        $display("FAIL: $clog2 data_width=%0d, addr_bits=%0d, expected=%0d",
+        $display("FAIL: $clog2 data_width=%0d, addr_bits=%0d, expected=%0d", cl.data_width,
-                 cl.data_width, cl.addr_bits, $clog2(cl.data_width));
+                 cl.addr_bits, $clog2(cl.data_width));
         ok = 1'b0;
       end
     end

test_regress/t/t_constraint_unq_arr_derived.v

@@ -4,11 +4,13 @@
 // SPDX-FileCopyrightText: 2026 Antmicro
 // SPDX-License-Identifier: CC0-1.0
 
+// verilog_format: off
 typedef enum bit [4:0] {
   ZERO = 5'b00000,
   RA, SP, GP, TP, T0, T1, T2, S0, S1, A0, A1, A2, A3, A4, A5, A6, A7,
   S2, S3, S4, S5, S6, S7, S8, S9, S10, S11, T3, T4, T5, T6
 } EnumType;
+// verilog_format: on
 
 class Base;
   rand EnumType b_scratch_reg;
@@ -44,7 +46,7 @@ module t;
   Foo foo;
   initial begin
     foo = new;
-    repeat(100) if (foo.randomize() != 1 || foo.pmp_reg[0] == foo.pmp_reg[1]) $stop;
+    repeat (100) if (foo.randomize() != 1 || foo.pmp_reg[0] == foo.pmp_reg[1]) $stop;
     $write("*-* All Finished *-*\n");
     $finish;
   end

test_regress/t/t_constraint_unq_arr_derived_inline_unsup.out

@@ -1,6 +1,6 @@
-%Warning-CONSTRAINTIGN: t/t_constraint_unq_arr_derived_inline_unsup.v:32:7: Unsupported: Unique constraint in randomize() with {}
+%Warning-CONSTRAINTIGN: t/t_constraint_unq_arr_derived_inline_unsup.v:35:11: Unsupported: Unique constraint in randomize() with {}
                                                                            : ... note: In instance 't'
-   32 |       unique{foo.pmp_reg};
+   35 |           unique {foo.pmp_reg};
       |           ^~~~~~
                         ... For warning description see https://verilator.org/warn/CONSTRAINTIGN?v=latest
                         ... Use "/* verilator lint_off CONSTRAINTIGN */" and lint_on around source to disable this message.

test_regress/t/t_constraint_unq_arr_derived_inline_unsup.v

@@ -4,11 +4,13 @@
 // SPDX-FileCopyrightText: 2026 Antmicro
 // SPDX-License-Identifier: CC0-1.0
 
+// verilog_format: off
 typedef enum bit [4:0] {
   ZERO = 5'b00000,
   RA, SP, GP, TP, T0, T1, T2, S0, S1, A0, A1, A2, A3, A4, A5, A6, A7,
   S2, S3, S4, S5, S6, S7, S8, S9, S10, S11, T3, T4, T5, T6
 } EnumType;
+// verilog_format: on
 
 class Base;
   rand EnumType b_scratch_reg;
@@ -28,11 +30,13 @@ module t;
   Foo foo;
   initial begin
     foo = new;
-    repeat(100) if (foo.randomize() with {
+    repeat (100)
-      unique{foo.pmp_reg};
+    if (foo.randomize() with {
-      foo.pmp_reg[0] inside {1,2};
+          unique {foo.pmp_reg};
-      foo.pmp_reg[1] inside {1,2};}
+          foo.pmp_reg[0] inside {1, 2};
-    != 1 || foo.pmp_reg[0] == foo.pmp_reg[1]) $stop;
+          foo.pmp_reg[1] inside {1, 2};
+        } != 1 || foo.pmp_reg[0] == foo.pmp_reg[1])
+      $stop;
     $write("*-* All Finished *-*\n");
     $finish;
   end

test_regress/t/t_constraint_unsup.v

@@ -1,7 +1,7 @@
 // DESCRIPTION: Verilator: Verilog Test module
 //
-// This file ONLY is placed under the Creative Commons Public Domain, for
+// This file ONLY is placed under the Creative Commons Public Domain.
-// any use, without warranty, 2026 by PlanV GmbH.
+// SPDX-FileCopyrightText: 2026 PlanV GmbH
 // SPDX-License-Identifier: CC0-1.0
 
 class Packet;

test_regress/t/t_dfg_push_sel.v

@@ -4,8 +4,10 @@
 // SPDX-FileCopyrightText: 2026 Wilson Snyder
 // SPDX-License-Identifier: CC0-1.0
 
+// verilog_format: off
 `define stop $stop
 `define checkh(gotv,expv) do if ((gotv) !== (expv)) begin $write("%%Error: %s:%0d:  got=%0x exp=%0x (%s !== %s)\n", `__FILE__,`__LINE__, (gotv), (expv), `"gotv`", `"expv`"); `stop; end while(0);
+// verilog_format: on
 
 module t;
 
@@ -27,7 +29,8 @@ module t;
     if (n == 0) begin
       assign vars[n].tmp = ~crc[n];
       assign vars[n].out = vars[n].tmp[n];
-    end else begin
+    end
+    else begin
       assign vars[n].tmp = {~crc[n], vars[n-1].tmp};
       assign vars[n].out = vars[n].tmp[n] ^ vars[n-1].out;
     end

test_regress/t/t_event_control_double_excessive.v

@@ -1,7 +1,7 @@
 // DESCRIPTION: Verilator: Verilog Test module
 //
-// This file ONLY is placed under the Creative Commons Public Domain, for
+// This file ONLY is placed under the Creative Commons Public Domain.
-// any use, without warranty, 2026 by Antmicro.
+// SPDX-FileCopyrightText: 2026 Antmicro
 // SPDX-License-Identifier: CC0-1.0
 
 module x;

test_regress/t/t_event_control_double_lost.v

@@ -1,7 +1,7 @@
 // DESCRIPTION: Verilator: Verilog Test module
 //
-// This file ONLY is placed under the Creative Commons Public Domain, for
+// This file ONLY is placed under the Creative Commons Public Domain.
-// any use, without warranty, 2026 by Antmicro.
+// SPDX-FileCopyrightText: 2026 Antmicro
 // SPDX-License-Identifier: CC0-1.0
 
 module x;

test_regress/t/t_interface_array_loop.v

@@ -8,13 +8,13 @@ interface simple_if;
   logic data;
   logic [7:0] value;
 
-  modport source (output data, output value);
+  modport source(output data, output value);
-  modport sink (input data, input value);
+  modport sink(input data, input value);
 endinterface
 
 // Test 6: Submodule with interface array as sink modport port
 module sub_sink (
-  simple_if.sink ifaces [3:0],
+    simple_if.sink ifaces[3:0],
     output logic [7:0] sum_out
 );
   always_comb begin
@@ -27,7 +27,7 @@ endmodule
 
 // Test 7: Submodule with interface array as source modport port
 module sub_source (
-  simple_if.source ifaces [3:0]
+    simple_if.source ifaces[3:0]
 );
   always_comb begin
     for (int i = 0; i < 4; i++) begin
@@ -39,7 +39,7 @@ endmodule
 
 // Test 8: Submodule with interface array without modport
 module sub_generic (
-  simple_if ifaces [3:0]
+    simple_if ifaces[3:0]
 );
   always_comb begin
     for (int i = 0; i < 4; i++) begin
@@ -53,7 +53,7 @@ endmodule
 module l1_param_sub #(
     parameter NUM_IFACES = 4
 ) (
-  simple_if.sink l0_ifaces [NUM_IFACES-1:0],
+    simple_if.sink l0_ifaces[NUM_IFACES-1:0],
     output logic [7:0] l0_sum
 );
   always_comb begin
@@ -64,7 +64,7 @@ module l1_param_sub #(
   end
 endmodule
 
-module t (/*AUTOARG*/
+module t (  /*AUTOARG*/
     // Inputs
     clk
 );
@@ -73,7 +73,7 @@ module t (/*AUTOARG*/
 
   localparam N = 4;
 
-  simple_if ifaces [N-1:0] ();
+  simple_if ifaces[N-1:0] ();
 
   // Test 1: Simple for loop writing to interface array
   always_comb begin
@@ -92,7 +92,7 @@ module t (/*AUTOARG*/
 
   // Test 3: For loop with expression in body
   always_comb begin
-    for (int k = 0; k < N-1; k++) begin
+    for (int k = 0; k < N - 1; k++) begin
       // Use k to index, accessing different member
       ifaces[k].value = 8'(k);
     end
@@ -102,7 +102,7 @@ module t (/*AUTOARG*/
   // Test 4: Descending loop with >= comparison
   logic [N-1:0] desc_data;
   always_comb begin
-    for (int p = N-1; p >= 0; p--) begin
+    for (int p = N - 1; p >= 0; p--) begin
       desc_data[p] = ifaces[p].data;
     end
   end
@@ -110,13 +110,13 @@ module t (/*AUTOARG*/
   // Test 4b: Ascending loop with <= comparison
   logic [N-1:0] lte_data;
   always_comb begin
-    for (int m = 0; m <= N-1; m++) begin
+    for (int m = 0; m <= N - 1; m++) begin
       lte_data[m] = ifaces[m].data;
     end
   end
 
   // Test 4c: Descending loop with > comparison
-  simple_if gt_ifaces [N-1:0] ();
+  simple_if gt_ifaces[N-1:0] ();
   always_comb begin
     for (int n = N; n > 0; n--) begin
       gt_ifaces[n-1].data = 1'b1;
@@ -125,7 +125,7 @@ module t (/*AUTOARG*/
   end
 
   // Test 5: Multiple interface arrays in same loop
-  simple_if other_ifaces [N-1:0] ();
+  simple_if other_ifaces[N-1:0] ();
   always_comb begin
     for (int q = 0; q < N; q++) begin
       other_ifaces[q].data = ifaces[q].data;
@@ -135,18 +135,21 @@ module t (/*AUTOARG*/
 
   // Test 6: Interface array as sink modport port (read from ports in loop)
   logic [7:0] sink_sum;
-  sub_sink u_sub_sink (.ifaces(ifaces), .sum_out(sink_sum));
+  sub_sink u_sub_sink (
+      .ifaces(ifaces),
+      .sum_out(sink_sum)
+  );
 
   // Test 7: Interface array as source modport port (write to ports in loop)
-  simple_if source_ifaces [N-1:0] ();
+  simple_if source_ifaces[N-1:0] ();
   sub_source u_sub_source (.ifaces(source_ifaces));
 
   // Test 8: Interface array without modport (read/write in loop)
-  simple_if generic_ifaces [N-1:0] ();
+  simple_if generic_ifaces[N-1:0] ();
   sub_generic u_sub_generic (.ifaces(generic_ifaces));
 
   // Test 9: Ascending loop with step of 2
-  simple_if step2_ifaces [7:0] ();
+  simple_if step2_ifaces[7:0] ();
   always_comb begin
     for (int i = 0; i < 8; i += 2) begin
       step2_ifaces[i].data = 1'b1;
@@ -159,7 +162,7 @@ module t (/*AUTOARG*/
   end
 
   // Test 10: Descending loop with step of -2
-  simple_if step2d_ifaces [7:0] ();
+  simple_if step2d_ifaces[7:0] ();
   always_comb begin
     for (int i = 6; i >= 0; i -= 2) begin
       step2d_ifaces[i].data = 1'b1;
@@ -174,7 +177,7 @@ module t (/*AUTOARG*/
   // Test 11: Parameterized submodule with interface array size from parameter
   // Override NUM_IFACES from default 4 to 6 to test that pre-unroll
   // uses the overridden parameter value (not the default)
-  simple_if l0_param_ifaces [5:0] ();
+  simple_if l0_param_ifaces[5:0] ();
   always_comb begin
     for (int i = 0; i < 6; i++) begin
       l0_param_ifaces[i].data = 1'b1;
@@ -182,13 +185,15 @@ module t (/*AUTOARG*/
     end
   end
   logic [7:0] l0_param_sum;
-  l1_param_sub #(.NUM_IFACES(6)) u_l1_param (
+  l1_param_sub #(
+      .NUM_IFACES(6)
+  ) u_l1_param (
       .l0_ifaces(l0_param_ifaces),
       .l0_sum(l0_param_sum)
   );
 
   // Test 12: Complex index expression (N-1-i) - reversed assignment
-  simple_if rev_ifaces [N-1:0] ();
+  simple_if rev_ifaces[N-1:0] ();
   always_comb begin
     for (int i = 0; i < N; i++) begin
       rev_ifaces[N-1-i].data = 1'b1;
@@ -197,7 +202,7 @@ module t (/*AUTOARG*/
   end
 
   // Test 13: Non-zero-based interface array range [2:5]
-  simple_if nzb_ifaces [2:5] ();
+  simple_if nzb_ifaces[2:5] ();
   always_comb begin
     for (int i = 2; i <= 5; i++) begin
       nzb_ifaces[i].data = 1'b1;
@@ -223,14 +228,14 @@ module t (/*AUTOARG*/
       end
 
       // Check values
-      for (int i = 0; i < N-1; i++) begin
+      for (int i = 0; i < N - 1; i++) begin
         if (ifaces[i].value !== 8'(i)) begin
           $display("%%Error: ifaces[%0d].value should be %0d, got %0d", i, i, ifaces[i].value);
           $stop;
         end
       end
       if (ifaces[N-1].value !== 8'hFF) begin
-        $display("%%Error: ifaces[%0d].value should be 0xFF, got %0d", N-1, ifaces[N-1].value);
+        $display("%%Error: ifaces[%0d].value should be 0xFF, got %0d", N - 1, ifaces[N-1].value);
         $stop;
       end
 
@@ -249,7 +254,8 @@ module t (/*AUTOARG*/
           $stop;
         end
         if (gt_ifaces[i].value !== 8'(i + 1)) begin
-          $display("%%Error: gt_ifaces[%0d].value should be %0d, got %0d", i, i+1, gt_ifaces[i].value);
+          $display("%%Error: gt_ifaces[%0d].value should be %0d, got %0d", i, i + 1,
+                   gt_ifaces[i].value);
           $stop;
         end
       end
@@ -263,11 +269,13 @@ module t (/*AUTOARG*/
       // Test 7: Check source_ifaces (written by sub_source with i+100)
       for (int i = 0; i < N; i++) begin
         if (source_ifaces[i].data !== 1'b1) begin
-          $display("%%Error: source_ifaces[%0d].data should be 1, got %b", i, source_ifaces[i].data);
+          $display("%%Error: source_ifaces[%0d].data should be 1, got %b", i,
+                   source_ifaces[i].data);
           $stop;
         end
         if (source_ifaces[i].value !== 8'(i + 100)) begin
-          $display("%%Error: source_ifaces[%0d].value should be %0d, got %0d", i, i+100, source_ifaces[i].value);
+          $display("%%Error: source_ifaces[%0d].value should be %0d, got %0d", i, i + 100,
+                   source_ifaces[i].value);
           $stop;
         end
       end
@@ -275,11 +283,13 @@ module t (/*AUTOARG*/
       // Test 8: Check generic_ifaces (written by sub_generic with i+50)
       for (int i = 0; i < N; i++) begin
         if (generic_ifaces[i].data !== 1'b0) begin
-          $display("%%Error: generic_ifaces[%0d].data should be 0, got %b", i, generic_ifaces[i].data);
+          $display("%%Error: generic_ifaces[%0d].data should be 0, got %b", i,
+                   generic_ifaces[i].data);
           $stop;
         end
         if (generic_ifaces[i].value !== 8'(i + 50)) begin
-          $display("%%Error: generic_ifaces[%0d].value should be %0d, got %0d", i, i+50, generic_ifaces[i].value);
+          $display("%%Error: generic_ifaces[%0d].value should be %0d, got %0d", i, i + 50,
+                   generic_ifaces[i].value);
           $stop;
         end
       end
@@ -288,20 +298,25 @@ module t (/*AUTOARG*/
       for (int i = 0; i < 8; i++) begin
         if (i % 2 == 0) begin
           if (step2_ifaces[i].data !== 1'b1) begin
-            $display("%%Error: step2_ifaces[%0d].data should be 1, got %b", i, step2_ifaces[i].data);
+            $display("%%Error: step2_ifaces[%0d].data should be 1, got %b", i,
+                     step2_ifaces[i].data);
             $stop;
           end
           if (step2_ifaces[i].value !== 8'(i)) begin
-            $display("%%Error: step2_ifaces[%0d].value should be %0d, got %0d", i, i, step2_ifaces[i].value);
+            $display("%%Error: step2_ifaces[%0d].value should be %0d, got %0d", i, i,
+                     step2_ifaces[i].value);
             $stop;
           end
-        end else begin
+        end
+        else begin
           if (step2_ifaces[i].data !== 1'b0) begin
-            $display("%%Error: step2_ifaces[%0d].data should be 0, got %b", i, step2_ifaces[i].data);
+            $display("%%Error: step2_ifaces[%0d].data should be 0, got %b", i,
+                     step2_ifaces[i].data);
             $stop;
           end
           if (step2_ifaces[i].value !== 8'hAA) begin
-            $display("%%Error: step2_ifaces[%0d].value should be 0xAA, got 0x%02x", i, step2_ifaces[i].value);
+            $display("%%Error: step2_ifaces[%0d].value should be 0xAA, got 0x%02x", i,
+                     step2_ifaces[i].value);
             $stop;
           end
         end
@@ -311,20 +326,25 @@ module t (/*AUTOARG*/
       for (int i = 0; i < 8; i++) begin
         if (i % 2 == 0) begin
           if (step2d_ifaces[i].data !== 1'b1) begin
-            $display("%%Error: step2d_ifaces[%0d].data should be 1, got %b", i, step2d_ifaces[i].data);
+            $display("%%Error: step2d_ifaces[%0d].data should be 1, got %b", i,
+                     step2d_ifaces[i].data);
             $stop;
           end
           if (step2d_ifaces[i].value !== 8'(i)) begin
-            $display("%%Error: step2d_ifaces[%0d].value should be %0d, got %0d", i, i, step2d_ifaces[i].value);
+            $display("%%Error: step2d_ifaces[%0d].value should be %0d, got %0d", i, i,
+                     step2d_ifaces[i].value);
             $stop;
           end
-        end else begin
+        end
+        else begin
           if (step2d_ifaces[i].data !== 1'b0) begin
-            $display("%%Error: step2d_ifaces[%0d].data should be 0, got %b", i, step2d_ifaces[i].data);
+            $display("%%Error: step2d_ifaces[%0d].data should be 0, got %b", i,
+                     step2d_ifaces[i].data);
             $stop;
           end
           if (step2d_ifaces[i].value !== 8'hBB) begin
-            $display("%%Error: step2d_ifaces[%0d].value should be 0xBB, got 0x%02x", i, step2d_ifaces[i].value);
+            $display("%%Error: step2d_ifaces[%0d].value should be 0xBB, got 0x%02x", i,
+                     step2d_ifaces[i].value);
             $stop;
           end
         end
@@ -344,7 +364,8 @@ module t (/*AUTOARG*/
           $stop;
         end
         if (rev_ifaces[i].value !== 8'(N - 1 - i)) begin
-          $display("%%Error: rev_ifaces[%0d].value should be %0d, got %0d", i, N-1-i, rev_ifaces[i].value);
+          $display("%%Error: rev_ifaces[%0d].value should be %0d, got %0d", i, N - 1 - i,
+                   rev_ifaces[i].value);
           $stop;
         end
       end
@@ -356,7 +377,8 @@ module t (/*AUTOARG*/
           $stop;
         end
         if (nzb_ifaces[i].value !== 8'(i)) begin
-          $display("%%Error: nzb_ifaces[%0d].value should be %0d, got %0d", i, i, nzb_ifaces[i].value);
+          $display("%%Error: nzb_ifaces[%0d].value should be %0d, got %0d", i, i,
+                   nzb_ifaces[i].value);
           $stop;
         end
       end

test_regress/t/t_interface_array_loop_bad.v

@@ -8,7 +8,7 @@ interface simple_bad_if;
   logic [7:0] value;
 endinterface
 
-module t (/*AUTOARG*/
+module t (  /*AUTOARG*/
     // Inputs
     clk
 );
@@ -17,7 +17,7 @@ module t (/*AUTOARG*/
 
   localparam N = 4;
 
-  simple_bad_if ifaces [N-1:0] ();
+  simple_bad_if ifaces[N-1:0] ();
 
   // BAD: Loop with runtime-variable bound - not unrollable, so the
   // interface array index cannot be resolved to a constant.

test_regress/t/t_interface_modport_expr_array.out

@@ -1,43 +1,43 @@
-%Error-UNSUPPORTED: t/t_interface_modport_expr_array.v:26:13: Unsupported: Modport expression with part select (IEEE 1800-2023 25.5.4)
+%Error-UNSUPPORTED: t/t_interface_modport_expr_array.v:26:15: Unsupported: Modport expression with part select (IEEE 1800-2023 25.5.4)
-   26 |     output .ch0_wr(ch[0].wr), input .ch0_rd(ch[0].rd),
+   26 |       output .ch0_wr(ch[0].wr),
       |               ^~~~~~
                     ... For error description see https://verilator.org/warn/UNSUPPORTED?v=latest
-%Error: t/t_interface_modport_expr_array.v:26:13: Modport item not found: 'ch0_wr'
+%Error: t/t_interface_modport_expr_array.v:26:15: Modport item not found: 'ch0_wr'
-   26 |     output .ch0_wr(ch[0].wr), input .ch0_rd(ch[0].rd),
+   26 |       output .ch0_wr(ch[0].wr),
       |               ^~~~~~
         ... See the manual at https://verilator.org/verilator_doc.html?v=latest for more assistance.
-%Error-UNSUPPORTED: t/t_interface_modport_expr_array.v:26:38: Unsupported: Modport expression with part select (IEEE 1800-2023 25.5.4)
+%Error-UNSUPPORTED: t/t_interface_modport_expr_array.v:27:14: Unsupported: Modport expression with part select (IEEE 1800-2023 25.5.4)
-   26 |     output .ch0_wr(ch[0].wr), input .ch0_rd(ch[0].rd),
+   27 |       input .ch0_rd(ch[0].rd),
       |              ^~~~~~
-%Error: t/t_interface_modport_expr_array.v:26:38: Modport item not found: 'ch0_rd'
+%Error: t/t_interface_modport_expr_array.v:27:14: Modport item not found: 'ch0_rd'
-   26 |     output .ch0_wr(ch[0].wr), input .ch0_rd(ch[0].rd),
+   27 |       input .ch0_rd(ch[0].rd),
       |              ^~~~~~
-%Error-UNSUPPORTED: t/t_interface_modport_expr_array.v:27:13: Unsupported: Modport expression with part select (IEEE 1800-2023 25.5.4)
+%Error-UNSUPPORTED: t/t_interface_modport_expr_array.v:28:15: Unsupported: Modport expression with part select (IEEE 1800-2023 25.5.4)
-   27 |     output .ch1_wr(ch[1].wr), input .ch1_rd(ch[1].rd)
+   28 |       output .ch1_wr(ch[1].wr),
       |               ^~~~~~
-%Error: t/t_interface_modport_expr_array.v:27:13: Modport item not found: 'ch1_wr'
+%Error: t/t_interface_modport_expr_array.v:28:15: Modport item not found: 'ch1_wr'
-   27 |     output .ch1_wr(ch[1].wr), input .ch1_rd(ch[1].rd)
+   28 |       output .ch1_wr(ch[1].wr),
       |               ^~~~~~
-%Error-UNSUPPORTED: t/t_interface_modport_expr_array.v:27:38: Unsupported: Modport expression with part select (IEEE 1800-2023 25.5.4)
+%Error-UNSUPPORTED: t/t_interface_modport_expr_array.v:29:14: Unsupported: Modport expression with part select (IEEE 1800-2023 25.5.4)
-   27 |     output .ch1_wr(ch[1].wr), input .ch1_rd(ch[1].rd)
+   29 |       input .ch1_rd(ch[1].rd)
       |              ^~~~~~
-%Error: t/t_interface_modport_expr_array.v:27:38: Modport item not found: 'ch1_rd'
+%Error: t/t_interface_modport_expr_array.v:29:14: Modport item not found: 'ch1_rd'
-   27 |     output .ch1_wr(ch[1].wr), input .ch1_rd(ch[1].rd)
+   29 |       input .ch1_rd(ch[1].rd)
       |              ^~~~~~
-%Error: t/t_interface_modport_expr_array.v:33:29: Can't find definition of 'ch0_wr' in dotted variable/method: 'port.ch0_wr'
+%Error: t/t_interface_modport_expr_array.v:37:29: Can't find definition of 'ch0_wr' in dotted variable/method: 'port.ch0_wr'
-   33 |   assign port.ch0_rd = port.ch0_wr + 8'h10;
+   37 |   assign port.ch0_rd = port.ch0_wr + 8'h10;
       |                             ^~~~~~
         ... Known scopes under 'port': <no instances found>
-%Error: t/t_interface_modport_expr_array.v:33:15: Can't find definition of 'ch0_rd' in dotted variable/method: 'port.ch0_rd'
+%Error: t/t_interface_modport_expr_array.v:37:15: Can't find definition of 'ch0_rd' in dotted variable/method: 'port.ch0_rd'
-   33 |   assign port.ch0_rd = port.ch0_wr + 8'h10;
+   37 |   assign port.ch0_rd = port.ch0_wr + 8'h10;
       |               ^~~~~~
         ... Known scopes under 'port': <no instances found>
-%Error: t/t_interface_modport_expr_array.v:34:29: Can't find definition of 'ch1_wr' in dotted variable/method: 'port.ch1_wr'
+%Error: t/t_interface_modport_expr_array.v:38:29: Can't find definition of 'ch1_wr' in dotted variable/method: 'port.ch1_wr'
-   34 |   assign port.ch1_rd = port.ch1_wr + 8'h20;
+   38 |   assign port.ch1_rd = port.ch1_wr + 8'h20;
       |                             ^~~~~~
         ... Known scopes under 'port': <no instances found>
-%Error: t/t_interface_modport_expr_array.v:34:15: Can't find definition of 'ch1_rd' in dotted variable/method: 'port.ch1_rd'
+%Error: t/t_interface_modport_expr_array.v:38:15: Can't find definition of 'ch1_rd' in dotted variable/method: 'port.ch1_rd'
-   34 |   assign port.ch1_rd = port.ch1_wr + 8'h20;
+   38 |   assign port.ch1_rd = port.ch1_wr + 8'h20;
       |               ^~~~~~
         ... Known scopes under 'port': <no instances found>
 %Error: Exiting due to

test_regress/t/t_interface_modport_expr_array.v

@@ -19,25 +19,29 @@ interface base_if;
 endinterface
 
 interface container_if;
-  base_if ch[2]();
+  base_if ch[2] ();
 
   // Modport expressions accessing arrayed interface instances
   modport mp(
-    output .ch0_wr(ch[0].wr), input .ch0_rd(ch[0].rd),
+      output .ch0_wr(ch[0].wr),
-    output .ch1_wr(ch[1].wr), input .ch1_rd(ch[1].rd)
+      input .ch0_rd(ch[0].rd),
+      output .ch1_wr(ch[1].wr),
+      input .ch1_rd(ch[1].rd)
   );
 endinterface
 
-module consumer(container_if.mp port);
+module consumer (
+    container_if.mp port
+);
   // Access through modport expression virtual ports
   assign port.ch0_rd = port.ch0_wr + 8'h10;
   assign port.ch1_rd = port.ch1_wr + 8'h20;
 endmodule
 
 module top;
-  container_if cont();
+  container_if cont ();
 
-  consumer m_cons(.port(cont));
+  consumer m_cons (.port(cont));
 
   initial begin
     cont.ch[0].wr = 8'hA0;

test_regress/t/t_interface_modport_expr_hier.v

@@ -22,13 +22,17 @@ interface if_a;
 endinterface
 
 // Leaf module: uses modport expression virtual ports
-module a_leaf(if_a.mp port);
+module a_leaf (
+    if_a.mp port
+);
   assign port.data_out = port.data_in + 8'h10;
 endmodule
 
 // Mid-level module: passes interface down
-module a_mid(if_a.mp port);
+module a_mid (
-  a_leaf u_leaf(.port(port));
+    if_a.mp port
+);
+  a_leaf u_leaf (.port(port));
 endmodule
 
 // ============================================================
@@ -41,16 +45,22 @@ interface if_b;
   modport mp(input .alpha(x), output .beta(y));
 endinterface
 
-module b_leaf(if_b.mp port);
+module b_leaf (
+    if_b.mp port
+);
   assign port.beta = port.alpha ^ 16'hFFFF;
 endmodule
 
-module b_mid(if_b.mp port);
+module b_mid (
-  b_leaf u_leaf(.port(port));
+    if_b.mp port
+);
+  b_leaf u_leaf (.port(port));
 endmodule
 
-module b_top_wrap(if_b.mp port);
+module b_top_wrap (
-  b_mid u_mid(.port(port));
+    if_b.mp port
+);
+  b_mid u_mid (.port(port));
 endmodule
 
 // ============================================================
@@ -62,17 +72,21 @@ interface if_c_inner;
 endinterface
 
 interface if_c_outer;
-  if_c_inner inner();
+  if_c_inner inner ();
   modport mp(output .w(inner.val), input .r(inner.val));
 endinterface
 
-module c_leaf(if_c_outer.mp port);
+module c_leaf (
+    if_c_outer.mp port
+);
   assign port.w = 8'hBE;
   wire [7:0] c_read = port.r;
 endmodule
 
-module c_mid(if_c_outer.mp port);
+module c_mid (
-  c_leaf u_leaf(.port(port));
+    if_c_outer.mp port
+);
+  c_leaf u_leaf (.port(port));
 endmodule
 
 // ============================================================
@@ -85,12 +99,16 @@ interface if_d;
   modport mp(input .vi(din), output .vo(dout));
 endinterface
 
-module d_leaf(if_d.mp port);
+module d_leaf (
+    if_d.mp port
+);
   assign port.vo = port.vi + 8'h01;
 endmodule
 
-module d_mid(if_d.mp port);
+module d_mid (
-  d_leaf u_leaf(.port(port));
+    if_d.mp port
+);
+  d_leaf u_leaf (.port(port));
 endmodule
 
 // ============================================================
@@ -100,20 +118,20 @@ endmodule
 module top;
 
   // --- Scenario A ---
-  if_a ifa();
+  if_a ifa ();
-  a_mid u_a(.port(ifa));
+  a_mid u_a (.port(ifa));
 
   // --- Scenario B ---
-  if_b ifb();
+  if_b ifb ();
-  b_top_wrap u_b(.port(ifb));
+  b_top_wrap u_b (.port(ifb));
 
   // --- Scenario C ---
-  if_c_outer ifc();
+  if_c_outer ifc ();
-  c_mid u_c(.port(ifc));
+  c_mid u_c (.port(ifc));
 
   // --- Scenario D ---
-  if_d ifd();
+  if_d ifd ();
-  d_mid u_d(.port(ifd));
+  d_mid u_d (.port(ifd));
 
   initial begin
     // Scenario A: single-level hierarchy

test_regress/t/t_interface_modport_expr_nested.v

@@ -26,17 +26,21 @@ interface example_reg_if;
 endinterface
 
 interface app_reg_if;
-  base_reg_if base();
+  base_reg_if base ();
-  example_reg_if example();
+  example_reg_if example ();
 
   // Use modport expressions to expose nested interface signals
   modport host(
-    output .base_wr(base.wr), input .base_rd(base.rd),
+      output .base_wr(base.wr),
-    output .example_wr(example.wr), input .example_rd(example.rd)
+      input .base_rd(base.rd),
+      output .example_wr(example.wr),
+      input .example_rd(example.rd)
   );
   modport dev(
-    input .base_wr(base.wr), output .base_rd(base.rd),
+      input .base_wr(base.wr),
-    input .example_wr(example.wr), output .example_rd(example.rd)
+      output .base_rd(base.rd),
+      input .example_wr(example.wr),
+      output .example_rd(example.rd)
   );
 endinterface
 
@@ -48,20 +52,19 @@ interface inner_if;
 endinterface
 
 interface middle_if;
-  inner_if inner();
+  inner_if inner ();
 endinterface
 
 interface outer_if;
-  middle_if middle();
+  middle_if middle ();
 
   // 3-level deep modport expression
-  modport mp(
+  modport mp(output .deep_out(middle.inner.data), input .deep_in(middle.inner.data));
-    output .deep_out(middle.inner.data),
-    input .deep_in(middle.inner.data)
-  );
 endinterface
 
-module deep_consumer(outer_if.mp port);
+module deep_consumer (
+    outer_if.mp port
+);
   assign port.deep_out = 8'hDE;
   // Verify reading through deep_in virtual port
   wire [7:0] deep_in_val = port.deep_in;
@@ -73,24 +76,23 @@ interface level1_if;
 endinterface
 
 interface level2_if;
-  level1_if l1();
+  level1_if l1 ();
 endinterface
 
 interface level3_if;
-  level2_if l2();
+  level2_if l2 ();
 endinterface
 
 interface level4_if;
-  level3_if l3();
+  level3_if l3 ();
 
   // 4-level deep modport expression
-  modport mp(
+  modport mp(output .deep4_w(l3.l2.l1.val), input .deep4_r(l3.l2.l1.val));
-    output .deep4_w(l3.l2.l1.val),
-    input .deep4_r(l3.l2.l1.val)
-  );
 endinterface
 
-module deep4_consumer(level4_if.mp port);
+module deep4_consumer (
+    level4_if.mp port
+);
   assign port.deep4_w = 8'h4D;
   wire [7:0] deep4_read = port.deep4_r;
 endmodule
@@ -104,13 +106,13 @@ module app_consumer (
 endmodule
 
 module top;
-  app_reg_if app_regs();
+  app_reg_if app_regs ();
-  outer_if outer();
+  outer_if outer ();
-  level4_if lev4();
+  level4_if lev4 ();
 
-  app_consumer m_app(.i_app_regs(app_regs));
+  app_consumer m_app (.i_app_regs(app_regs));
-  deep_consumer m_deep(.port(outer));
+  deep_consumer m_deep (.port(outer));
-  deep4_consumer m_deep4(.port(lev4));
+  deep4_consumer m_deep4 (.port(lev4));
 
   initial begin
     app_regs.base.wr = 8'hAB;

test_regress/t/t_interface_modport_hier.v

@@ -10,45 +10,54 @@
 // - Multiple interface instances (same modport type, different data)
 // - Interface arrays
 
-interface bus_if (input logic clk);
+interface bus_if (
+    input logic clk
+);
   logic [7:0] data;
-  modport slave (output data, input clk);
+  modport slave(output data, input clk);
 endinterface
 
 // l1 module with the actual logic
-module l1_mod (bus_if.slave bus);
+module l1_mod (
-  always_ff @(posedge bus.clk)
+    bus_if.slave bus
-    bus.data <= 8'h5A;
+);
+  always_ff @(posedge bus.clk) bus.data <= 8'h5A;
 endmodule
 
 // l0 module wrapping l1 module
-module l0_mod (bus_if.slave bus);
+module l0_mod (
+    bus_if.slave bus
+);
   l1_mod l1_inst (bus);
 endmodule
 
 // Modules for testing multiple instances with same modport
-module mod_aa (bus_if.slave bus);
+module mod_aa (
+    bus_if.slave bus
+);
   assign bus.data = 8'hAA;
 endmodule
 
-module mod_bb (bus_if.slave bus);
+module mod_bb (
+    bus_if.slave bus
+);
   assign bus.data = 8'hBB;
 endmodule
 
 // Module for testing interface arrays
-module array_mod (bus_if.slave bus[2]);
+module array_mod (
+    bus_if.slave bus[2]
+);
   always_ff @(posedge bus[0].clk) begin
     bus[0].data <= 8'hA0;
     bus[1].data <= 8'hA1;
   end
 endmodule
 
-module t (/*AUTOARG*/
+module t (
-  // Inputs
+    input clk
-  clk
+);
-  );
 
-  input clk;
   integer cyc = 0;
 
   // Deep hierarchy test

test_regress/t/t_randc_constraint.v

@@ -51,7 +51,7 @@ endclass
 
 class RandcSmall;
   randc bit [1:0] val;  // 4 possible values: 0,1,2,3
-  constraint c_exclude { val != 0; }  // 3 valid values: 1,2,3
+  constraint c_exclude {val != 0;}  // 3 valid values: 1,2,3
 
   function void test_cyclic;
     automatic int count[4];
@@ -78,7 +78,7 @@ endclass
 // Test 3: Inheritance - parent randc with constraint, child inherits
 class RandcParent;
   randc bit [2:0] code;  // 8 values: 0-7
-  constraint c_positive { code > 0; }  // 7 valid values: 1-7
+  constraint c_positive {code > 0;}  // 7 valid values: 1-7
 
   function void test_cyclic;
     automatic int count[8];
@@ -102,7 +102,7 @@ endclass
 
 class RandcChild extends RandcParent;
   // Inherits randc code and c_positive constraint
-  constraint c_upper { code <= 5; }  // Further restrict: 1-5 (5 values)
+  constraint c_upper {code <= 5;}  // Further restrict: 1-5 (5 values)
 
   function void test_cyclic;
     automatic int count[8];
@@ -132,7 +132,7 @@ endclass
 // enforcement and that all valid values eventually appear rather than exact counts.
 class RandcModeSwitch;
   randc bit [1:0] x;  // 4 values: 0-3
-  constraint c_nonzero { x != 0; }  // 3 valid values: 1,2,3
+  constraint c_nonzero {x != 0;}  // 3 valid values: 1,2,3
 
   function void test_mode_switch;
     automatic int randomize_result;
@@ -189,7 +189,7 @@ class RandcEnumConstrained;
   } color_t;
 
   randc color_t color;
-  constraint c_no_white { color != WHITE; }  // 3 valid: RED, GREEN, BLUE
+  constraint c_no_white {color != WHITE;}  // 3 valid: RED, GREEN, BLUE
 
   function void test_cyclic;
     automatic int count[4] = '{0, 0, 0, 0};

test_regress/t/t_randomize_prepost_nested.v

@@ -4,11 +4,13 @@
 // SPDX-FileCopyrightText: 2026 PlanV GmbH
 // SPDX-License-Identifier: CC0-1.0
 
-// Test: pre/post_randomize callbacks on nested rand class objects and inherited methods
+// verilog_format: off
-// Covers: IEEE 1800-2017 Section 18.4.1 recursive callback invocation
-
 `define stop $stop
 `define checkd(gotv,expv) do if ((gotv) !== (expv)) begin $write("%%Error: %s:%0d:  got=%0d exp=%0d\n", `__FILE__,`__LINE__, (gotv), (expv)); `stop; end while(0);
+// verilog_format: on
+
+// Test: pre/post_randomize callbacks on nested rand class objects and inherited methods
+// Covers: IEEE 1800-2017 Section 18.4.1 recursive callback invocation
 
 // --- Inherited callbacks (no override) ---
 
@@ -100,7 +102,7 @@ class Level3;
   int pre_count;
   int post_count;
 
-  constraint c_val { val inside {[10:200]}; }
+  constraint c_val {val inside {[10 : 200]};}
 
   function new();
     pre_count = 0;
@@ -122,7 +124,7 @@ class Level2;
   int pre_count;
   int post_count;
 
-  constraint c_val { val inside {[1:100]}; }
+  constraint c_val {val inside {[1 : 100]};}
 
   function new();
     l3 = new();
@@ -145,7 +147,7 @@ class Level1;
   int pre_count;
   int post_count;
 
-  constraint c_val { val inside {[50:150]}; }
+  constraint c_val {val inside {[50 : 150]};}
 
   function new();
     l2 = new();
@@ -223,7 +225,7 @@ module t;
     // Test 6: Multiple randomizations
     begin
       automatic Level1 l1 = new;
-      repeat(5) begin
+      repeat (5) begin
         r = l1.randomize();
         `checkd(r, 1);
       end

test_regress/t/t_randomize_rand_mode_funcarg.v

@@ -12,7 +12,10 @@ class RandModeClass;
   rand int x;
   rand int y;
 
-  constraint c { x inside {[1:255]}; y inside {[1:255]}; }
+  constraint c {
+    x inside {[1 : 255]};
+    y inside {[1 : 255]};
+  }
 
   task check_mode(string name, int actual, int expected);
     if (actual !== expected) begin

test_regress/t/t_scheduling_different_edges.v

@@ -1,21 +1,23 @@
 // DESCRIPTION: Verilator: Verilog Test module
 //
-// This file ONLY is placed under the Creative Commons Public Domain, for
+// This file ONLY is placed under the Creative Commons Public Domain.
-// any use, without warranty, 2026 by Antmicro.
+// SPDX-FileCopyrightText: 2026 Antmicro
 // SPDX-License-Identifier: CC0-1.0
 
 module x;
   bit val = 0;
   bit ok = 0;
 
-  initial #1 begin
+  initial
+    #1 begin
       val = 1;
       @(val);
       $write("*-* All Finished *-*\n");
       $finish;
     end
 
-  initial @(posedge val) begin
+  initial
+    @(posedge val) begin
       val = 0;
       ok = 1;
       @(edge val);

test_regress/t/t_std_randomize_assoc.v

@@ -4,16 +4,18 @@
 // SPDX-FileCopyrightText: 2026 PlanV GmbH
 // SPDX-License-Identifier: CC0-1.0
 
-// Test std::randomize() with associative array variables
+// verilog_format: off
-
 `define stop $stop;
 `define checkd(gotv,expv) do if ((gotv) !== (expv)) begin $write("%%Error: %s:%0d:  got=%0d exp=%0d\n", `__FILE__,`__LINE__, (gotv), (expv)); `stop; end while(0);
+// verilog_format: on
+
+// Test std::randomize() with associative array variables
 
 module t_std_randomize_assoc;
 
   // Associative array variables
-  int assoc_int [int];
+  int assoc_int[int];
-  bit [7:0] assoc_byte [string];
+  bit [7:0] assoc_byte[string];
 
   initial begin
     // Test 1: std::randomize with int-keyed associative array (no constraints)

test_regress/t/t_std_randomize_queue.v

@@ -4,19 +4,21 @@
 // SPDX-FileCopyrightText: 2026 PlanV GmbH
 // SPDX-License-Identifier: CC0-1.0
 
-// Test std::randomize() with queue and dynamic array variables
+// verilog_format: off
-
 `define stop $stop;
 `define checkd(gotv,expv) do if ((gotv) !== (expv)) begin $write("%%Error: %s:%0d:  got=%0d exp=%0d\n", `__FILE__,`__LINE__, (gotv), (expv)); `stop; end while(0);
+// verilog_format: on
+
+// Test std::randomize() with queue and dynamic array variables
 
 module t_std_randomize_queue;
 
   // Queue variables
-  bit [7:0] q8 [$];
+  bit [7:0] q8[$];
-  bit [31:0] q32 [$];
+  bit [31:0] q32[$];
 
   // Dynamic array variables
-  bit [7:0] dyn8 [];
+  bit [7:0] dyn8[];
 
   int i;
 

test_regress/t/t_std_randomize_unsup_unq_arr.out

@@ -1,6 +1,6 @@
 %Warning-CONSTRAINTIGN: t/t_std_randomize_unsup_unq_arr.v:10:39: Unsupported: Unique constraint in std::randomize() with {}
                                                                : ... note: In instance 't'
-   10 |     if (!bit'(std::randomize(x) with {unique{x};}) || x[0] == x[1]) $stop;
+   10 |     if (!bit'(std::randomize(x) with {unique {x};}) || x[0] == x[1]) $stop;
       |                                       ^~~~~~
                         ... For warning description see https://verilator.org/warn/CONSTRAINTIGN?v=latest
                         ... Use "/* verilator lint_off CONSTRAINTIGN */" and lint_on around source to disable this message.

test_regress/t/t_std_randomize_unsup_unq_arr.v

@@ -7,7 +7,7 @@
 module t;
   initial begin
     bit x[2];
-    if (!bit'(std::randomize(x) with {unique{x};}) || x[0] == x[1]) $stop;
+    if (!bit'(std::randomize(x) with {unique {x};}) || x[0] == x[1]) $stop;
     $write("*-* All Finished *-*\n");
     $finish;
   end

test_regress/t/t_timing_eval_act.v

@@ -1,7 +1,7 @@
 // DESCRIPTION: Verilator: Verilog Test module
 //
-// This file ONLY is placed under the Creative Commons Public Domain, for
+// This file ONLY is placed under the Creative Commons Public Domain.
-// any use, without warranty, 2026 by Antmicro.
+// SPDX-FileCopyrightText: 2026 Antmicro
 // SPDX-License-Identifier: CC0-1.0
 
 module t;

test_regress/t/t_virtual_interface_only_with_assignw.v

@@ -1,7 +1,7 @@
 // DESCRIPTION: Verilator: Verilog Test module
 //
-// This file ONLY is placed under the Creative Commons Public Domain, for
+// This file ONLY is placed under the Creative Commons Public Domain.
-// any use, without warranty, 2026 by Antmicro.
+// SPDX-FileCopyrightText: 2026 Antmicro Ltd
 // SPDX-License-Identifier: CC0-1.0
 
 interface sys_if;
@@ -38,8 +38,8 @@ class axi_agent_config;
 endclass
 
 module axi_tb_top;
-  sys_if sys_vi();
+  sys_if sys_vi ();
-  axi_if axi_vi();
+  axi_if axi_vi ();
   assign axi_vi.clk = sys_vi.clk;
   sys_config a;
   axi_agent_config b;