diff --git a/include/nanobind/stl/detail/chrono.h b/include/nanobind/stl/detail/chrono.h
index 39bd5d91..b4815c57 100644
--- a/include/nanobind/stl/detail/chrono.h
+++ b/include/nanobind/stl/detail/chrono.h
@@ -19,7 +19,13 @@
 // in order to be able to handle errors better.
 
 #if !defined(Py_LIMITED_API) && !defined(PYPY_VERSION)
-#include <datetime.h>
+#  include <datetime.h>
+#endif
+
+#if defined(__GNUC__)
+// warning: warning: declaration of '...' with attribute 'noinline' follows inline declaration
+#  pragma GCC diagnostic push
+#  pragma GCC diagnostic ignored "-Wattributes"
 #endif
 
 NAMESPACE_BEGIN(NB_NAMESPACE)
@@ -287,3 +293,7 @@ inline PyObject* pack_datetime(int year, int month, int day,
 }
 
 #endif // !defined(Py_LIMITED_API) && !defined(PYPY_VERSION)
+//
+#if defined(__GNUC__)
+#  pragma GCC diagnostic pop
+#endif
diff --git a/src/nb_func.cpp b/src/nb_func.cpp
index 15ad101f..972c3960 100644
--- a/src/nb_func.cpp
+++ b/src/nb_func.cpp
@@ -1341,7 +1341,7 @@ PyObject *nb_func_get_doc(PyObject *self, void *) {
         const func_data *fi = f + i;
         nb_func_render_signature(fi);
         buf.put('\n');
-        doc_found |= fi->flags & (uint32_t) func_flags::has_doc;
+        doc_found |= (fi->flags & (uint32_t) func_flags::has_doc) != 0;
     }
 
     if (doc_found) {