diff --git a/cfg/gnu.cfg b/cfg/gnu.cfg
index bdf096e77..d9b3d49ec 100644
--- a/cfg/gnu.cfg
+++ b/cfg/gnu.cfg
@@ -4,6 +4,15 @@
     <dealloc>free</dealloc>
     <alloc init="true">get_current_dir_name</alloc>
   </memory>
+  <!-- long long atoq(const char *nptr); -->
+  <function name="atoq">
+    <use-retval/>
+    <noreturn>false</noreturn>
+    <arg nr="1">
+      <not-null/>
+      <not-uninit/>
+    </arg>
+  </function>
   <function name="strndupa">
     <use-retval/>
     <noreturn>false</noreturn>