Tests: Add more 'config' unsupported tests (#5891 partial)

test_regress/t/t_config_hier.out

@@ -0,0 +1,85 @@
+%Error-UNSUPPORTED: t/t_config_hier.v:34:1: Unsupported: config
+   34 | config cfg21;
+      | ^~~~~~
+                    ... For error description see https://verilator.org/warn/UNSUPPORTED?v=latest
+%Error-UNSUPPORTED: t/t_config_hier.v:35:10: Unsupported: config cell
+   35 |   design t;
+      |          ^
+%Error-UNSUPPORTED: t/t_config_hier.v:36:3: Unsupported: config rule
+   36 |   instance t.u_1 use work.cfg2 :config;
+      |   ^~~~~~~~
+%Error-UNSUPPORTED: t/t_config_hier.v:36:18: Unsupported: config use
+   36 |   instance t.u_1 use work.cfg2 :config;
+      |                  ^~~
+%Error-UNSUPPORTED: t/t_config_hier.v:39:1: Unsupported: config
+   39 | config cfg22;
+      | ^~~~~~
+%Error-UNSUPPORTED: t/t_config_hier.v:40:10: Unsupported: config cell
+   40 |   design t;
+      |          ^
+%Error-UNSUPPORTED: t/t_config_hier.v:41:3: Unsupported: config rule
+   41 |   instance t.u_1 use cfg2 :config;
+      |   ^~~~~~~~
+%Error-UNSUPPORTED: t/t_config_hier.v:41:18: Unsupported: config use
+   41 |   instance t.u_1 use cfg2 :config;
+      |                  ^~~
+%Error-UNSUPPORTED: t/t_config_hier.v:44:1: Unsupported: config
+   44 | config cfg31;
+      | ^~~~~~
+%Error-UNSUPPORTED: t/t_config_hier.v:45:10: Unsupported: config cell
+   45 |   design t;
+      |          ^
+%Error-UNSUPPORTED: t/t_config_hier.v:46:3: Unsupported: config rule
+   46 |   cell work.m1 use work.cfg2 :config;
+      |   ^~~~
+%Error-UNSUPPORTED: t/t_config_hier.v:46:8: Unsupported: config cell
+   46 |   cell work.m1 use work.cfg2 :config;
+      |        ^~~~
+%Error-UNSUPPORTED: t/t_config_hier.v:46:16: Unsupported: config use
+   46 |   cell work.m1 use work.cfg2 :config;
+      |                ^~~
+%Error-UNSUPPORTED: t/t_config_hier.v:49:1: Unsupported: config
+   49 | config cfg32;
+      | ^~~~~~
+%Error-UNSUPPORTED: t/t_config_hier.v:50:10: Unsupported: config cell
+   50 |   design t;
+      |          ^
+%Error-UNSUPPORTED: t/t_config_hier.v:51:3: Unsupported: config rule
+   51 |   cell m1 use cfg2 :config;
+      |   ^~~~
+%Error-UNSUPPORTED: t/t_config_hier.v:51:8: Unsupported: config cell
+   51 |   cell m1 use cfg2 :config;
+      |        ^~
+%Error-UNSUPPORTED: t/t_config_hier.v:51:11: Unsupported: config use
+   51 |   cell m1 use cfg2 :config;
+      |           ^~~
+%Error-UNSUPPORTED: t/t_config_hier.v:54:1: Unsupported: config
+   54 | config cfg41;
+      | ^~~~~~
+%Error-UNSUPPORTED: t/t_config_hier.v:55:10: Unsupported: config cell
+   55 |   design t;
+      |          ^
+%Error-UNSUPPORTED: t/t_config_hier.v:56:3: Unsupported: config rule
+   56 |   cell work.m1 use work.cfg2;   
+      |   ^~~~
+%Error-UNSUPPORTED: t/t_config_hier.v:56:8: Unsupported: config cell
+   56 |   cell work.m1 use work.cfg2;   
+      |        ^~~~
+%Error-UNSUPPORTED: t/t_config_hier.v:56:16: Unsupported: config use
+   56 |   cell work.m1 use work.cfg2;   
+      |                ^~~
+%Error-UNSUPPORTED: t/t_config_hier.v:60:1: Unsupported: config
+   60 | config cfg2;
+      | ^~~~~~
+%Error-UNSUPPORTED: t/t_config_hier.v:61:10: Unsupported: config cell
+   61 |   design c2_b;
+      |          ^~~~
+%Error-UNSUPPORTED: t/t_config_hier.v:62:3: Unsupported: config rule
+   62 |   instance u_bb use work.c2_bb;
+      |   ^~~~~~~~
+%Error-UNSUPPORTED: t/t_config_hier.v:62:17: Unsupported: config use
+   62 |   instance u_bb use work.c2_bb;
+      |                 ^~~
+%Error: Specified --top-module 'cfg21' was not found in design.
+        ... See the manual at https://verilator.org/verilator_doc.html?v=latest for more assistance.
+%Error: Exiting due to

test_regress/t/t_config_hier.py

@@ -0,0 +1,18 @@
+#!/usr/bin/env python3
+# DESCRIPTION: Verilator: Verilog Test driver/expect definition
+#
+# Copyright 2025 by Wilson Snyder. This program is free software; you
+# can redistribute it and/or modify it under the terms of either the GNU
+# Lesser General Public License Version 3 or the Perl Artistic License
+# Version 2.0.
+# SPDX-License-Identifier: LGPL-3.0-only OR Artistic-2.0
+
+import vltest_bootstrap
+
+test.scenarios('linter')
+
+test.lint(verilator_flags2=["--lint-only", "--top cfg21"],
+          fails=test.vlt_all,
+          expect_filename=test.golden_filename)
+
+test.passes()

test_regress/t/t_config_hier.v

@@ -0,0 +1,63 @@
+// DESCRIPTION: Verilator: Verilog Test module
+//
+// This file ONLY is placed under the Creative Commons Public Domain, for
+// any use, without warranty, 2025 by Wilson Snyder.
+// SPDX-License-Identifier: CC0-1.0
+
+// Test several ways of using config to specify different hierarchies When done,
+// have a .py file using --work to select each config, and have a .out golden
+// match file to make sure get expected results.
+
+module m1;
+  initial $stop;
+endmodule
+
+module c2_bb;
+  initial $display("c2_bb %%m=%m %%l=%l");
+endmodule
+
+module c2_b;
+
+  bb u_bb();
+
+  initial $display("c2_b %%m=%m %%l=%l");
+endmodule
+
+module t;
+
+  m1 u_1();
+
+  final $write("*-* All Finished *-*\n");
+
+endmodule
+
+config cfg21;
+  design t;
+  instance t.u_1 use work.cfg2 :config;
+endconfig
+
+config cfg22;
+  design t;
+  instance t.u_1 use cfg2 :config;
+endconfig
+
+config cfg31;
+  design t;
+  cell work.m1 use work.cfg2 :config;
+endconfig
+
+config cfg32;
+  design t;
+  cell m1 use cfg2 :config;
+endconfig
+
+config cfg41;
+  design t;
+  cell work.m1 use work.cfg2;  // :config; implied as no conflict
+endconfig
+
+// Base usage
+config cfg2;
+  design c2_b;
+  instance u_bb use work.c2_bb;
+endconfig

test_regress/t/t_config_param.out

@@ -1,20 +1,20 @@
-%Error-UNSUPPORTED: t/t_config_param.v:24:4: Unsupported: config localparam declaration
+%Error-UNSUPPORTED: t/t_config_param.v:24:3: Unsupported: config localparam declaration
    24 |   localparam P1 = "cfg.p1";
       |   ^~~~~~~~~~
                     ... For error description see https://verilator.org/warn/UNSUPPORTED?v=latest
-%Error-UNSUPPORTED: t/t_config_param.v:25:4: Unsupported: config localparam declaration
+%Error-UNSUPPORTED: t/t_config_param.v:25:3: Unsupported: config localparam declaration
    25 |   localparam P2 = "cfg.p2";
       |   ^~~~~~~~~~
-%Error-UNSUPPORTED: t/t_config_param.v:27:26: Unsupported: 'config use' parameter assignment
+%Error-UNSUPPORTED: t/t_config_param.v:29:25: Unsupported: 'config use' parameter assignment
-   27 |    instance t.u_1a use #(.P1(), .P2("override.u_a.p2"));
+   29 |   instance t.u_1a use #(.P1(), .P2("override.u_a.p2"));
       |                         ^
-%Error-UNSUPPORTED: t/t_config_param.v:27:33: Unsupported: 'config use' parameter assignment
+%Error-UNSUPPORTED: t/t_config_param.v:29:32: Unsupported: 'config use' parameter assignment
-   27 |    instance t.u_1a use #(.P1(), .P2("override.u_a.p2"));
+   29 |   instance t.u_1a use #(.P1(), .P2("override.u_a.p2"));
       |                                ^
-%Error-UNSUPPORTED: t/t_config_param.v:29:26: Unsupported: 'config use' parameter assignment
+%Error-UNSUPPORTED: t/t_config_param.v:31:25: Unsupported: 'config use' parameter assignment
-   29 |    instance t.u_1c use #(.P1(P1), .P2(P2));
+   31 |   instance t.u_1c use #(.P1(P1), .P2(P2));
       |                         ^
-%Error-UNSUPPORTED: t/t_config_param.v:29:35: Unsupported: 'config use' parameter assignment
+%Error-UNSUPPORTED: t/t_config_param.v:31:34: Unsupported: 'config use' parameter assignment
-   29 |    instance t.u_1c use #(.P1(P1), .P2(P2));
+   31 |   instance t.u_1c use #(.P1(P1), .P2(P2));
       |                                  ^
 %Error: Exiting due to

test_regress/t/t_config_param.v

@@ -24,6 +24,8 @@ config cfg1;
   localparam P1 = "cfg.p1";
   localparam P2 = "cfg.p2";
   design t;
+  // Test that parameters work in 'use' statements
+  // Check a .out golden file against above display statements
   instance t.u_1a use #(.P1(), .P2("override.u_a.p2"));
   instance t.u_1b use #();  // All parameters back to default
   instance t.u_1c use #(.P1(P1), .P2(P2));

test_regress/t/t_config_rules.out

@@ -0,0 +1,79 @@
+%Error-UNSUPPORTED: t/t_config_rules.v:24:1: Unsupported: config
+   24 | config cfg;
+      | ^~~~~~
+                    ... For error description see https://verilator.org/warn/UNSUPPORTED?v=latest
+%Error-UNSUPPORTED: t/t_config_rules.v:25:10: Unsupported: config cell
+   25 |   design t;
+      |          ^
+%Error-UNSUPPORTED: t/t_config_rules.v:28:3: Unsupported: config rule
+   28 |   default liblist;   
+      |   ^~~~~~~
+%Error-UNSUPPORTED: t/t_config_rules.v:29:3: Unsupported: config rule
+   29 |   default liblist liba libb;
+      |   ^~~~~~~
+%Error-UNSUPPORTED: t/t_config_rules.v:33:3: Unsupported: config rule
+   33 |   instance t.m20 liblist;   
+      |   ^~~~~~~~
+%Error-UNSUPPORTED: t/t_config_rules.v:34:3: Unsupported: config rule
+   34 |   instance t.m21 liblist libc;
+      |   ^~~~~~~~
+%Error-UNSUPPORTED: t/t_config_rules.v:35:3: Unsupported: config rule
+   35 |   instance t.m22 liblist libc libd;   
+      |   ^~~~~~~~
+%Error-UNSUPPORTED: t/t_config_rules.v:36:3: Unsupported: config rule
+   36 |   instance t.m23 liblist libc libd;   
+      |   ^~~~~~~~
+%Error-UNSUPPORTED: t/t_config_rules.v:37:3: Unsupported: config rule
+   37 |   instance t.m24 liblist libc libd;   
+      |   ^~~~~~~~
+%Error-UNSUPPORTED: t/t_config_rules.v:40:3: Unsupported: config rule
+   40 |   instance t.m30 use cell_identifier;
+      |   ^~~~~~~~
+%Error-UNSUPPORTED: t/t_config_rules.v:40:18: Unsupported: config use
+   40 |   instance t.m30 use cell_identifier;
+      |                  ^~~
+%Error-UNSUPPORTED: t/t_config_rules.v:41:3: Unsupported: config rule
+   41 |   instance t.m31 use lib_id.cell_id;
+      |   ^~~~~~~~
+%Error-UNSUPPORTED: t/t_config_rules.v:41:18: Unsupported: config use
+   41 |   instance t.m31 use lib_id.cell_id;
+      |                  ^~~
+%Error-UNSUPPORTED: t/t_config_rules.v:42:3: Unsupported: config rule
+   42 |   instance t.m32 use #();
+      |   ^~~~~~~~
+%Error-UNSUPPORTED: t/t_config_rules.v:42:18: Unsupported: config use
+   42 |   instance t.m32 use #();
+      |                  ^~~
+%Error-UNSUPPORTED: t/t_config_rules.v:45:3: Unsupported: config rule
+   45 |   cell m40 liblist libc libd;
+      |   ^~~~
+%Error-UNSUPPORTED: t/t_config_rules.v:45:8: Unsupported: config cell
+   45 |   cell m40 liblist libc libd;
+      |        ^~~
+%Error-UNSUPPORTED: t/t_config_rules.v:46:3: Unsupported: config rule
+   46 |   cell work.m41 liblist libc libd;
+      |   ^~~~
+%Error-UNSUPPORTED: t/t_config_rules.v:46:8: Unsupported: config cell
+   46 |   cell work.m41 liblist libc libd;
+      |        ^~~~
+%Error-UNSUPPORTED: t/t_config_rules.v:47:3: Unsupported: config rule
+   47 |   cell m42 use m42alt;
+      |   ^~~~
+%Error-UNSUPPORTED: t/t_config_rules.v:47:8: Unsupported: config cell
+   47 |   cell m42 use m42alt;
+      |        ^~~
+%Error-UNSUPPORTED: t/t_config_rules.v:47:12: Unsupported: config use
+   47 |   cell m42 use m42alt;
+      |            ^~~
+%Error-UNSUPPORTED: t/t_config_rules.v:48:3: Unsupported: config rule
+   48 |   cell work.m43 use work.m43alt;
+      |   ^~~~
+%Error-UNSUPPORTED: t/t_config_rules.v:48:8: Unsupported: config cell
+   48 |   cell work.m43 use work.m43alt;
+      |        ^~~~
+%Error-UNSUPPORTED: t/t_config_rules.v:48:17: Unsupported: config use
+   48 |   cell work.m43 use work.m43alt;
+      |                 ^~~
+%Error: Specified --top-module 'cfg' was not found in design.
+        ... See the manual at https://verilator.org/verilator_doc.html?v=latest for more assistance.
+%Error: Exiting due to

test_regress/t/t_config_rules.py

@@ -0,0 +1,27 @@
+#!/usr/bin/env python3
+# DESCRIPTION: Verilator: Verilog Test driver/expect definition
+#
+# Copyright 2025 by Wilson Snyder. This program is free software; you
+# can redistribute it and/or modify it under the terms of either the GNU
+# Lesser General Public License Version 3 or the Perl Artistic License
+# Version 2.0.
+# SPDX-License-Identifier: LGPL-3.0-only OR Artistic-2.0
+
+import vltest_bootstrap
+
+test.scenarios('simulator')
+
+test.compile(verilator_flags2=[
+    "--binary", "--top cfg", "--work liba t/t_config_rules_sub.v",
+    "--work libb t/t_config_rules_sub.v", "--work libc t/t_config_rules_sub.v",
+    "--work libd t/t_config_rules_sub.v"
+],
+             fails=True,
+             expect_filename=test.golden_filename)
+
+#test.execute()
+
+# Sort so that 'initial' scheduling order is not relevant
+#test.files_identical_sorted(test.run_log_filename, test.golden_filename, is_logfile=True)
+
+test.passes()

test_regress/t/t_config_rules.v

@@ -0,0 +1,50 @@
+// DESCRIPTION: Verilator: Verilog Test module
+//
+// This file ONLY is placed under the Creative Commons Public Domain, for
+// any use, without warranty, 2025 by Wilson Snyder.
+// SPDX-License-Identifier: CC0-1.0
+
+module t;
+  m10 u_10();
+  m20 u_20();
+  m21 u_21();
+  m22 u_22();
+  m23 u_23();
+  m24 u_24();
+  m30 u_30();
+  m31 u_31();
+  m32 u_32();
+  m40 u_40();
+  m41 u_41();
+  m42 u_42();
+  m43 u_43();
+  final $write("*-* All Finished *-*\n");
+endmodule
+
+config cfg;
+  design t;
+
+  // Test uses m10
+  default liblist;  // Ignored
+  default liblist liba libb;
+
+  // Test uses m20-29
+  // TODO test taht default libraries also searched (compatibility)
+  instance t.m20 liblist;  // Use parent's cell library
+  instance t.m21 liblist libc;
+  instance t.m22 liblist libc libd;  // m22 in libc
+  instance t.m23 liblist libc libd;  // m23 in libd
+  instance t.m24 liblist libc libd;  // m24 in default (libb)
+
+  // Test uses m30-39
+  instance t.m30 use cell_identifier;
+  instance t.m31 use lib_id.cell_id;
+  instance t.m32 use #();
+
+  // Test uses m40-49
+  cell m40 liblist libc libd;
+  cell work.m41 liblist libc libd;
+  cell m42 use m42alt;
+  cell work.m43 use work.m43alt;
+
+endconfig

test_regress/t/t_config_rules_sub.v

@@ -0,0 +1,38 @@
+// DESCRIPTION: Verilator: Verilog Test module
+//
+// This file ONLY is placed under the Creative Commons Public Domain, for
+// any use, without warranty, 2025 by Wilson Snyder.
+// SPDX-License-Identifier: CC0-1.0
+
+`define STRINGIFY(x) `"x`"
+
+// Checks that descendants pick up the proper library (IEEE 1800-2023 33.4.1.5)
+module sub;
+  class C;
+    static task info;
+      $display("%s.C %%m=%m %%l=%l", `STRINGIFY(m));
+    endtask
+  endclass
+  initial $display("%s %%m=%m %%l=%l", `STRINGIFY(m));
+  initial C::info();
+endmodule
+
+`define DECL_MODULE(m) \
+  module m; \
+    sub sub(); \
+    initial $display("%s %%m=%m %%l=%l", `STRINGIFY(m)); \
+  endmodule
+
+`DECL_MODULE(m10)
+`DECL_MODULE(m20)
+`DECL_MODULE(m21)
+`DECL_MODULE(m22)
+`DECL_MODULE(m23)
+`DECL_MODULE(m24)
+`DECL_MODULE(m30)
+`DECL_MODULE(m31)
+`DECL_MODULE(m32)
+`DECL_MODULE(m40)
+`DECL_MODULE(m41)
+`DECL_MODULE(m42)
+`DECL_MODULE(m43)

test_regress/t/t_config_top.out

@@ -0,0 +1,22 @@
+%Error-UNSUPPORTED: t/t_config_top.v:20:1: Unsupported: config
+   20 | config cfg1;
+      | ^~~~~~
+                    ... For error description see https://verilator.org/warn/UNSUPPORTED?v=latest
+%Error-UNSUPPORTED: t/t_config_top.v:21:10: Unsupported: config cell
+   21 |   design m1;
+      |          ^~
+%Error-UNSUPPORTED: t/t_config_top.v:25:1: Unsupported: config
+   25 | config cfg2;
+      | ^~~~~~
+%Error-UNSUPPORTED: t/t_config_top.v:26:10: Unsupported: config cell
+   26 |   design m2;   
+      |          ^~
+%Error-UNSUPPORTED: t/t_config_top.v:29:1: Unsupported: config
+   29 | config cfg3;
+      | ^~~~~~
+%Error-UNSUPPORTED: t/t_config_top.v:30:10: Unsupported: config cell
+   30 |   design work.m3;
+      |          ^~~~
+%Error: Specified --top-module 'cfg2' was not found in design.
+        ... See the manual at https://verilator.org/verilator_doc.html?v=latest for more assistance.
+%Error: Exiting due to

test_regress/t/t_config_top.py

@@ -0,0 +1,16 @@
+#!/usr/bin/env python3
+# DESCRIPTION: Verilator: Verilog Test driver/expect definition
+#
+# Copyright 2025 by Wilson Snyder. This program is free software; you
+# can redistribute it and/or modify it under the terms of either the GNU
+# Lesser General Public License Version 3 or the Perl Artistic License
+# Version 2.0.
+# SPDX-License-Identifier: LGPL-3.0-only OR Artistic-2.0
+
+import vltest_bootstrap
+
+test.scenarios('simulator')
+
+test.lint(verilator_flags2=["--top cfg2"], fails=True, expect_filename=test.golden_filename)
+
+test.passes()

test_regress/t/t_config_top.v

@@ -0,0 +1,31 @@
+// DESCRIPTION: Verilator: Verilog Test module
+//
+// This file ONLY is placed under the Creative Commons Public Domain, for
+// any use, without warranty, 2025 by Wilson Snyder.
+// SPDX-License-Identifier: CC0-1.0
+
+module m1;
+  initial $stop;
+endmodule
+
+module m2;
+  initial begin
+    $write("*-* All Finished *-*\n");
+    $finish;
+  end
+endmodule
+
+// not defined: module m3;
+
+config cfg1;
+  design m1;
+endconfig : cfg1  // Test end label
+
+// Check --top picks this config
+config cfg2;
+  design m2;  // Test without library name
+endconfig
+
+config cfg3;
+  design work.m3;
+endconfig

test_regress/t/t_config_top2.out

@@ -0,0 +1,13 @@
+%Error-UNSUPPORTED: t/t_config_top2.v:21:1: Unsupported: config
+   21 | config cfg12;
+      | ^~~~~~
+                    ... For error description see https://verilator.org/warn/UNSUPPORTED?v=latest
+%Error-UNSUPPORTED: t/t_config_top2.v:22:10: Unsupported: config cell
+   22 |   design work.m1 m2;   
+      |          ^~~~
+%Error-UNSUPPORTED: t/t_config_top2.v:22:18: Unsupported: config cell
+   22 |   design work.m1 m2;   
+      |                  ^~
+%Error: Specified --top-module 'cfg2' was not found in design.
+        ... See the manual at https://verilator.org/verilator_doc.html?v=latest for more assistance.
+%Error: Exiting due to

test_regress/t/t_config_top2.py

@@ -0,0 +1,16 @@
+#!/usr/bin/env python3
+# DESCRIPTION: Verilator: Verilog Test driver/expect definition
+#
+# Copyright 2025 by Wilson Snyder. This program is free software; you
+# can redistribute it and/or modify it under the terms of either the GNU
+# Lesser General Public License Version 3 or the Perl Artistic License
+# Version 2.0.
+# SPDX-License-Identifier: LGPL-3.0-only OR Artistic-2.0
+
+import vltest_bootstrap
+
+test.scenarios('simulator')
+
+test.lint(verilator_flags2=["--top cfg2"], fails=True, expect_filename=test.golden_filename)
+
+test.passes()

test_regress/t/t_config_top2.v

@@ -0,0 +1,23 @@
+// DESCRIPTION: Verilator: Verilog Test module
+//
+// This file ONLY is placed under the Creative Commons Public Domain, for
+// any use, without warranty, 2025 by Wilson Snyder.
+// SPDX-License-Identifier: CC0-1.0
+
+module m1;
+  initial begin
+    m2.fin;
+  end
+endmodule
+
+module m2;
+  task fin;
+    $write("*-* All Finished *-*\n");
+    $finish;
+  endtask
+endmodule
+
+// Test --top picks this config
+config cfg12;
+  design work.m1 m2;  // Test both modules listed, library.cell, and cell w/o library
+endconfig

test_regress/t/t_config_unsup.out

@@ -2,76 +2,76 @@
    24 | config cfg;
       | ^~~~~~
                     ... For error description see https://verilator.org/warn/UNSUPPORTED?v=latest
-%Error-UNSUPPORTED: t/t_config_unsup.v:25:11: Unsupported: config cell
+%Error-UNSUPPORTED: t/t_config_unsup.v:25:10: Unsupported: config cell
    25 |   design t;
       |          ^
-%Error-UNSUPPORTED: t/t_config_unsup.v:28:4: Unsupported: config rule
+%Error-UNSUPPORTED: t/t_config_unsup.v:28:3: Unsupported: config rule
    28 |   default liblist;   
       |   ^~~~~~~
-%Error-UNSUPPORTED: t/t_config_unsup.v:29:4: Unsupported: config rule
+%Error-UNSUPPORTED: t/t_config_unsup.v:29:3: Unsupported: config rule
    29 |   default liblist liba libb;
       |   ^~~~~~~
-%Error-UNSUPPORTED: t/t_config_unsup.v:32:4: Unsupported: config rule
+%Error-UNSUPPORTED: t/t_config_unsup.v:32:3: Unsupported: config rule
    32 |   instance t.m20 liblist;   
       |   ^~~~~~~~
-%Error-UNSUPPORTED: t/t_config_unsup.v:33:4: Unsupported: config rule
+%Error-UNSUPPORTED: t/t_config_unsup.v:33:3: Unsupported: config rule
    33 |   instance t.m21 liblist libc;
       |   ^~~~~~~~
-%Error-UNSUPPORTED: t/t_config_unsup.v:34:4: Unsupported: config rule
+%Error-UNSUPPORTED: t/t_config_unsup.v:34:3: Unsupported: config rule
    34 |   instance t.m22 liblist libc libd;   
       |   ^~~~~~~~
-%Error-UNSUPPORTED: t/t_config_unsup.v:35:4: Unsupported: config rule
+%Error-UNSUPPORTED: t/t_config_unsup.v:35:3: Unsupported: config rule
    35 |   instance t.m23 liblist libc libd;   
       |   ^~~~~~~~
-%Error-UNSUPPORTED: t/t_config_unsup.v:36:4: Unsupported: config rule
+%Error-UNSUPPORTED: t/t_config_unsup.v:36:3: Unsupported: config rule
    36 |   instance t.m24 liblist libc libd;   
       |   ^~~~~~~~
-%Error-UNSUPPORTED: t/t_config_unsup.v:39:4: Unsupported: config rule
+%Error-UNSUPPORTED: t/t_config_unsup.v:39:3: Unsupported: config rule
    39 |   instance t.m30 use cell_identifier;
       |   ^~~~~~~~
-%Error-UNSUPPORTED: t/t_config_unsup.v:39:19: Unsupported: config use
+%Error-UNSUPPORTED: t/t_config_unsup.v:39:18: Unsupported: config use
    39 |   instance t.m30 use cell_identifier;
       |                  ^~~
-%Error-UNSUPPORTED: t/t_config_unsup.v:40:4: Unsupported: config rule
+%Error-UNSUPPORTED: t/t_config_unsup.v:40:3: Unsupported: config rule
    40 |   instance t.m31 use lib_id.cell_id;
       |   ^~~~~~~~
-%Error-UNSUPPORTED: t/t_config_unsup.v:40:19: Unsupported: config use
+%Error-UNSUPPORTED: t/t_config_unsup.v:40:18: Unsupported: config use
    40 |   instance t.m31 use lib_id.cell_id;
       |                  ^~~
-%Error-UNSUPPORTED: t/t_config_unsup.v:41:4: Unsupported: config rule
+%Error-UNSUPPORTED: t/t_config_unsup.v:41:3: Unsupported: config rule
    41 |   instance t.m32 use #();
       |   ^~~~~~~~
-%Error-UNSUPPORTED: t/t_config_unsup.v:41:19: Unsupported: config use
+%Error-UNSUPPORTED: t/t_config_unsup.v:41:18: Unsupported: config use
    41 |   instance t.m32 use #();
       |                  ^~~
-%Error-UNSUPPORTED: t/t_config_unsup.v:44:4: Unsupported: config rule
+%Error-UNSUPPORTED: t/t_config_unsup.v:44:3: Unsupported: config rule
    44 |   cell m40 liblist libc libd;
       |   ^~~~
-%Error-UNSUPPORTED: t/t_config_unsup.v:44:9: Unsupported: config cell
+%Error-UNSUPPORTED: t/t_config_unsup.v:44:8: Unsupported: config cell
    44 |   cell m40 liblist libc libd;
       |        ^~~
-%Error-UNSUPPORTED: t/t_config_unsup.v:45:4: Unsupported: config rule
+%Error-UNSUPPORTED: t/t_config_unsup.v:45:3: Unsupported: config rule
    45 |   cell work.m41 liblist libc libd;
       |   ^~~~
-%Error-UNSUPPORTED: t/t_config_unsup.v:45:9: Unsupported: config cell
+%Error-UNSUPPORTED: t/t_config_unsup.v:45:8: Unsupported: config cell
    45 |   cell work.m41 liblist libc libd;
       |        ^~~~
-%Error-UNSUPPORTED: t/t_config_unsup.v:46:4: Unsupported: config rule
+%Error-UNSUPPORTED: t/t_config_unsup.v:46:3: Unsupported: config rule
    46 |   cell m42 use m42alt;
       |   ^~~~
-%Error-UNSUPPORTED: t/t_config_unsup.v:46:9: Unsupported: config cell
+%Error-UNSUPPORTED: t/t_config_unsup.v:46:8: Unsupported: config cell
    46 |   cell m42 use m42alt;
       |        ^~~
-%Error-UNSUPPORTED: t/t_config_unsup.v:46:13: Unsupported: config use
+%Error-UNSUPPORTED: t/t_config_unsup.v:46:12: Unsupported: config use
    46 |   cell m42 use m42alt;
       |            ^~~
-%Error-UNSUPPORTED: t/t_config_unsup.v:47:4: Unsupported: config rule
+%Error-UNSUPPORTED: t/t_config_unsup.v:47:3: Unsupported: config rule
    47 |   cell work.m43 use work.m43alt;
       |   ^~~~
-%Error-UNSUPPORTED: t/t_config_unsup.v:47:9: Unsupported: config cell
+%Error-UNSUPPORTED: t/t_config_unsup.v:47:8: Unsupported: config cell
    47 |   cell work.m43 use work.m43alt;
       |        ^~~~
-%Error-UNSUPPORTED: t/t_config_unsup.v:47:18: Unsupported: config use
+%Error-UNSUPPORTED: t/t_config_unsup.v:47:17: Unsupported: config use
    47 |   cell work.m43 use work.m43alt;
       |                 ^~~
 %Error: Exiting due to

test_regress/t/t_config_work.v

@@ -5,6 +5,7 @@
 // SPDX-License-Identifier: CC0-1.0
 
 module t;
+  // Test --work allows selecting two different libraries for these instances
   m1 u_1();
   m2 u_2();
   final $write("*-* All Finished *-*\n");