From a18fdb1c4bd3eaaf66bd77d774c8169b075dafba Mon Sep 17 00:00:00 2001
From: Matthew Ballance <matt.ballance@gmail.com>
Date: Sat, 7 Mar 2026 15:22:33 +0000
Subject: [PATCH] Restore t_covergroup_with_sample_args_too_many_bad test

This test was added upstream in a364704e3 and should not have been
deleted. The driver normalizes version strings (?v=X.Y -> ?v=latest)
and 'Exiting due to...' messages, so the upstream .out file is
compatible with our branch's error output as-is.

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
---
 ...covergroup_with_sample_args_too_many_bad.out |  6 ++++++
 ..._covergroup_with_sample_args_too_many_bad.py | 16 ++++++++++++++++
 ...t_covergroup_with_sample_args_too_many_bad.v | 17 +++++++++++++++++
 3 files changed, 39 insertions(+)
 create mode 100644 test_regress/t/t_covergroup_with_sample_args_too_many_bad.out
 create mode 100755 test_regress/t/t_covergroup_with_sample_args_too_many_bad.py
 create mode 100644 test_regress/t/t_covergroup_with_sample_args_too_many_bad.v

diff --git a/test_regress/t/t_covergroup_with_sample_args_too_many_bad.out b/test_regress/t/t_covergroup_with_sample_args_too_many_bad.out
new file mode 100644
index 000000000..a8718cb93
--- /dev/null
+++ b/test_regress/t/t_covergroup_with_sample_args_too_many_bad.out
@@ -0,0 +1,6 @@
+%Error: t/t_covergroup_with_sample_args_too_many_bad.v:15:26: Too many arguments in function call to FUNC 'sample'
+                                                            : ... note: In instance 't'
+   15 |     cov1.sample(5, 1'b0, 42);   
+      |                          ^~
+        ... See the manual at https://verilator.org/verilator_doc.html?v=latest for more assistance.
+%Error: Exiting due to
diff --git a/test_regress/t/t_covergroup_with_sample_args_too_many_bad.py b/test_regress/t/t_covergroup_with_sample_args_too_many_bad.py
new file mode 100755
index 000000000..dff5516bf
--- /dev/null
+++ b/test_regress/t/t_covergroup_with_sample_args_too_many_bad.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.compile(fails=True, expect_filename=test.golden_filename)
+
+test.passes()
diff --git a/test_regress/t/t_covergroup_with_sample_args_too_many_bad.v b/test_regress/t/t_covergroup_with_sample_args_too_many_bad.v
new file mode 100644
index 000000000..60ba2dc26
--- /dev/null
+++ b/test_regress/t/t_covergroup_with_sample_args_too_many_bad.v
@@ -0,0 +1,17 @@
+// DESCRIPTION: Verilator: Verilog Test module
+//
+// This file ONLY is placed under the Creative Commons Public Domain, for
+// any use, without warranty, 2025 by Antmicro.
+// SPDX-License-Identifier: CC0-1.0
+
+/* verilator lint_off COVERIGN */
+module t;
+  covergroup cg_with_sample(int init) with function sample (int addr, bit is_read = 1'b0);
+  endgroup
+
+  cg_with_sample cov1 = new(7);
+
+  function void run();
+    cov1.sample(5, 1'b0, 42);  // Too many arguments
+  endfunction
+endmodule