Fix a compilation error on C99

Add some ifdef guards around `getlogin_r`.

1 files changed, 3 insertions, 0 deletions

diff --git a/tests/test_getlogin_r_dynamic.c b/tests/test_getlogin_r_dynamic.c
index 33156ee..b1e66f7 100644
--- a/tests/test_getlogin_r_dynamic.c
+++ b/tests/test_getlogin_r_dynamic.c
@@ -3,6 +3,7 @@
 #include <unistd.h>
 
 int main(int argc, char** argv) {
+#if  _REENTRANT || _POSIX_C_SOURCE >= 199506L
   char buffer[8] = {0};
 
   getlogin_r(buffer, 6);
@@ -13,4 +14,6 @@ int main(int argc, char** argv) {
 
   puts(buffer);
   return ret;
+#endif
+  return 0;
 }