1 files changed, 104 insertions, 0 deletions
diff --git a/usr.bin/gcov/t_gcov.sh b/usr.bin/gcov/t_gcov.sh
new file mode 100644
index 000000000000..7895a9b9adf0
--- /dev/null
+++ b/usr.bin/gcov/t_gcov.sh
@@ -0,0 +1,104 @@
+# $NetBSD: t_gcov.sh,v 1.1 2025/01/18 22:31:22 rillig Exp $
+#
+# Copyright (c) 2025 The NetBSD Foundation, Inc.
+# All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions
+# are met:
+# 1. Redistributions of source code must retain the above copyright
+#    notice, this list of conditions and the following disclaimer.
+# 2. Redistributions in binary form must reproduce the above copyright
+#    notice, this list of conditions and the following disclaimer in the
+#    documentation and/or other materials provided with the distribution.
+#
+# THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
+# ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
+# TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+# PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
+# BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+# CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+# SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+# INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+# CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+# ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+# POSSIBILITY OF SUCH DAMAGE.
+#
+
+after_exec_head()
+{
+}
+after_exec_body()
+{
+	atf_require_prog cat
+	atf_require_prog gcc
+	atf_require_prog gcov
+	atf_require_prog grep
+
+	cat <<EOF >prog.c
+#include <unistd.h>
+
+int
+main(void)
+{
+	pid_t pid = vfork();
+	switch (pid) {
+	case 0:
+		execl("/bin/sh", "sh", "-c", ":", (const char *)0);
+		/* FALLTHROUGH */
+	case -1:
+		write(2, "error\n", 6);
+		_exit(1);
+	}
+
+	write(1, "reached\n", 8);
+	return 0;
+}
+EOF
+
+	cat <<EOF >prog.c.gcov.expected
+        -:    0:Source:prog.c
+        -:    0:Graph:prog.gcno
+        -:    0:Data:prog.gcda
+        -:    0:Runs:1
+        -:    1:#include <unistd.h>
+        -:    2:
+        -:    3:int
+        1:    4:main(void)
+        -:    5:{
+        1:    6:	pid_t pid = vfork();
+        1:    7:	switch (pid) {
+        1:    8:	case 0:
+        1:    9:		execl("/bin/sh", "sh", "-c", ":", (const char *)0);
+        -:   10:		/* FALLTHROUGH */
+    #####:   11:	case -1:
+    #####:   12:		write(2, "error\n", 6);
+    #####:   13:		_exit(1);
+        -:   14:	}
+        -:   15:
+    #####:   16:	write(1, "reached\n", 8);
+    #####:   17:	return 0;
+        -:   18:}
+EOF
+
+	atf_check \
+	    gcc --coverage -c prog.c
+	atf_check \
+	    gcc --coverage -o prog prog.o
+	atf_check -o inline:'reached\n' \
+	    ./prog
+	atf_check -o ignore \
+	    gcov prog.c
+
+	atf_check -o file:prog.c.gcov.expected \
+	    cat prog.c.gcov
+
+	# FIXME: The code was reached once but is reported as unreached.
+	atf_check -o ignore \
+	    grep "#####.*reached" prog.c.gcov
+}
+
+atf_init_test_cases()
+{
+	atf_add_test_case after_exec
+}