[PATCH] testsuite: Fix leaks in tree-dynamic-object-size-0.c

[Siddhesh Poyarekar]

In commit e5cfb9cac1d7aba9a8ea73bfe7922cfaff9d61f3 I introduced tests
for strdup and strndup with leaks.  Fix those leaks.

gcc/testsuite/ChangeLog:

        * gcc.dg/builtin-dynamic-object-size-0.c (test_strdup,
        test_strndup, test_strdup_min, test_strndup_min): Free RES
        before returning from function.
---
 .../gcc.dg/builtin-dynamic-object-size-0.c    | 20 +++++++++++++++----
 1 file changed, 16 insertions(+), 4 deletions(-)

diff --git a/gcc/testsuite/gcc.dg/builtin-dynamic-object-size-0.c 
b/gcc/testsuite/gcc.dg/builtin-dynamic-object-size-0.c
index 4f1606a486b..f9047a037d9 100644
--- a/gcc/testsuite/gcc.dg/builtin-dynamic-object-size-0.c
+++ b/gcc/testsuite/gcc.dg/builtin-dynamic-object-size-0.c
@@ -486,7 +486,10 @@ __attribute__ ((noinline))
 test_strdup (const char *in)
 {
   char *res = __builtin_strdup (in);
-  return __builtin_dynamic_object_size (res, 0);
+  size_t sz = __builtin_dynamic_object_size (res, 0);
+
+  __builtin_free (res);
+  return sz;
 }
 
 size_t
@@ -494,7 +497,10 @@ __attribute__ ((noinline))
 test_strndup (const char *in, size_t bound)
 {
   char *res = __builtin_strndup (in, bound);
-  return __builtin_dynamic_object_size (res, 0);
+  size_t sz = __builtin_dynamic_object_size (res, 0);
+
+  __builtin_free (res);
+  return sz;
 }
 
 size_t
@@ -502,7 +508,10 @@ __attribute__ ((noinline))
 test_strdup_min (const char *in)
 {
   char *res = __builtin_strdup (in);
-  return __builtin_dynamic_object_size (res, 2);
+  size_t sz = __builtin_dynamic_object_size (res, 2);
+
+  __builtin_free (res);
+  return sz;
 }
 
 size_t
@@ -510,7 +519,10 @@ __attribute__ ((noinline))
 test_strndup_min (const char *in, size_t bound)
 {
   char *res = __builtin_strndup (in, bound);
-  return __builtin_dynamic_object_size (res, 2);
+  size_t sz = __builtin_dynamic_object_size (res, 2);
+
+  __builtin_free (res);
+  return sz;
 }
 
 /* Other tests.  */
-- 
2.38.1