[PATCH v3 4/9] test: add systemwide stapsdt note test using absolute path

Add test verifying that systemwide stapsdt probe firing
is detected and we retrieve arguments correctly where
the specified module path is an absolute path.

Signed-off-by: Alan Maguire <[email protected]>
---
 .../tst.stapsdt-notes-systemwide-abspath.r    |  2 +
 .../tst.stapsdt-notes-systemwide-abspath.sh   | 51 +++++++++++++++++++
 2 files changed, 53 insertions(+)
 create mode 100644 test/unittest/usdt/tst.stapsdt-notes-systemwide-abspath.r
 create mode 100755 test/unittest/usdt/tst.stapsdt-notes-systemwide-abspath.sh

diff --git a/test/unittest/usdt/tst.stapsdt-notes-systemwide-abspath.r b/test/unittest/usdt/tst.stapsdt-notes-systemwide-abspath.r
new file mode 100644
index 00000000..48ee5472
--- /dev/null
+++ b/test/unittest/usdt/tst.stapsdt-notes-systemwide-abspath.r
@@ -0,0 +1,2 @@
+test:args:2:./test:val:18
+
diff --git a/test/unittest/usdt/tst.stapsdt-notes-systemwide-abspath.sh b/test/unittest/usdt/tst.stapsdt-notes-systemwide-abspath.sh
new file mode 100755
index 00000000..b2dc61ed
--- /dev/null
+++ b/test/unittest/usdt/tst.stapsdt-notes-systemwide-abspath.sh
@@ -0,0 +1,51 @@
+#!/bin/bash
+#
+# Oracle Linux DTrace.
+# Copyright (c) 2026, Oracle and/or its affiliates. All rights reserved.
+# Licensed under the Universal Permissive License v 1.0 as shown at
+# http://oss.oracle.com/licenses/upl.
+
+# This test covers stapsdt probes fired by the STAP_PROBEn macros,
+# testing various argument forms (constant, register, deref etc).
+
+if [ $# != 1 ]; then
+	echo expected one argument: '<'dtrace-path'>'
+	exit 2
+fi
+
+dtrace=$1
+CC=/usr/bin/gcc
+CFLAGS="-I${PWD}/test/unittest/usdt"
+
+DIRNAME="$tmpdir/usdt-notes.$$.$RANDOM"
+mkdir -p $DIRNAME
+cd $DIRNAME
+
+cat > test.c <<EOF
+#include <sdt_notes.h>
+
+int
+main(int argc, char **argv)
+{
+	STAP_PROBE4(test_prov, args, argc, argv[0], argv[1] + 4, 18);
+}
+EOF
+
+${CC} ${CFLAGS} -o test test.c
+if [ $? -ne 0 ]; then
+	echo "failed to compile test.c" >& 2
+	exit 1
+fi
+export TESTPROG="$(pwd)/test"
+
+$dtrace -c './test arg1val' -qs /dev/stdin <<EOF
+test_prov*:$TESTPROG::args
+{
+	printf("%s:%s:%li:%s:%s:%li\n", basename(probemod), probename,
+	       arg0, copyinstr(arg1), copyinstr(arg2), arg3);
+}
+
+EOF
+status=$?
+
+exit $status
-- 
2.43.5