lib-test: Ensure we send signals to regular PIDs only

diff --git a/src/lib-test/test-subprocess.c b/src/lib-test/test-subprocess.c
index 5fe765f5f7fc9c4da22de99b5fbb10518b164fea..d92d22ef1098aafc85dcba2134d6381138ad7163 100644 (file)
--- a/src/lib-test/test-subprocess.c
+++ b/src/lib-test/test-subprocess.c
@@ -130,6 +130,7 @@ static void test_subprocess_verify_exit_status(int status)
 
 static void test_subprocess_kill_forced(struct test_subprocess *subp)
 {
+       i_assert(subp->pid > 0);
        (void)kill(subp->pid, SIGKILL);
        (void)waitpid(subp->pid, NULL, 0);
 }