Fix regression introduced by changeset 7c6e3358221a that caused compile
errors of _testcapimodule.c with older versions of gcc.
diff --git a/Modules/_testcapimodule.c b/Modules/_testcapimodule.c
index 08aa9c7..a8ce0dc 100644
--- a/Modules/_testcapimodule.c
+++ b/Modules/_testcapimodule.c
@@ -69,7 +69,7 @@
static PyObject*
test_sizeof_c_types(PyObject *self)
{
-#ifdef __GNUC__
+#if defined(__GNUC__) && ((__GNUC__ > 4) || ((__GNUC__ == 4) && (__GNUC_MINOR__ > 5)))
#pragma GCC diagnostic push
#pragma GCC diagnostic ignored "-Wtype-limits"
#endif
@@ -130,7 +130,7 @@
#undef IS_SIGNED
#undef CHECK_SIGNESS
#undef CHECK_SIZEOF
-#ifdef __GNUC__
+#if defined(__GNUC__) && ((__GNUC__ > 4) || ((__GNUC__ == 4) && (__GNUC_MINOR__ > 5)))
#pragma GCC diagnostic pop
#endif
}