From: Lennart Poettering <lennart@poettering.net>
Date: Fri, 2 Oct 2020 07:13:17 +0000 (+0200)
Subject: test: add test that validates that PTR_TO_INT(INT_TO_PTR()) covers whole int range
X-Git-Tag: v247-rc1~114^2~3
X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=463f9ce3bc1a651759e76ba5d54a8181d1212b78;p=thirdparty%2Fsystemd.git

test: add test that validates that PTR_TO_INT(INT_TO_PTR()) covers whole int range
---

diff --git a/src/test/test-util.c b/src/test/test-util.c
index d4a6c8f5c33..cfbafcc5ca6 100644
--- a/src/test/test-util.c
+++ b/src/test/test-util.c
@@ -414,6 +414,8 @@ static void test_foreach_pointer(void) {
         int a, b, c, *i;
         size_t k = 0;
 
+        log_info("/* %s */", __func__);
+
         FOREACH_POINTER(i, &a, &b, &c) {
                 switch (k) {
 
@@ -489,6 +491,17 @@ static void test_foreach_pointer(void) {
         assert(k == 11);
 }
 
+static void test_ptr_to_int(void) {
+        log_info("/* %s */", __func__);
+
+        /* Primary reason to have this test is to validate that pointers are large enough to hold entire int range */
+        assert_se(PTR_TO_INT(INT_TO_PTR(0)) == 0);
+        assert_se(PTR_TO_INT(INT_TO_PTR(1)) == 1);
+        assert_se(PTR_TO_INT(INT_TO_PTR(-1)) == -1);
+        assert_se(PTR_TO_INT(INT_TO_PTR(INT_MAX)) == INT_MAX);
+        assert_se(PTR_TO_INT(INT_TO_PTR(INT_MIN)) == INT_MIN);
+}
+
 int main(int argc, char *argv[]) {
         test_setup_logging(LOG_INFO);
 
@@ -508,6 +521,7 @@ int main(int argc, char *argv[]) {
         test_system_tasks_max();
         test_system_tasks_max_scale();
         test_foreach_pointer();
+        test_ptr_to_int();
 
         return 0;
 }