diff --git a/cfg/wxwidgets.cfg b/cfg/wxwidgets.cfg
index fd7e138fe..b09e70291 100644
--- a/cfg/wxwidgets.cfg
+++ b/cfg/wxwidgets.cfg
@@ -1372,6 +1372,36 @@
     </arg>
     <arg nr="2"/>
   </function>
+  <!-- int wxAtoi(const wxString & str)-->
+  <function name="wxAtoi">
+    <noreturn>false</noreturn>
+    <leak-ignore/>
+    <returnValue type="int"/>
+    <use-retval/>
+    <arg nr="1">
+      <not-uninit/>
+    </arg>
+  </function>
+  <!-- double wxAtof(const wxString & str)-->
+  <function name="wxAtof">
+    <noreturn>false</noreturn>
+    <leak-ignore/>
+    <returnValue type="double"/>
+    <use-retval/>
+    <arg nr="1">
+      <not-uninit/>
+    </arg>
+  </function>
+  <!-- long wxAtol(const wxString & str)-->
+  <function name="wxAtol">
+    <noreturn>false</noreturn>
+    <leak-ignore/>
+    <returnValue type="long"/>
+    <use-retval/>
+    <arg nr="1">
+      <not-uninit/>
+    </arg>
+  </function>
   <define name="DECLARE_EVENT_TABLE()" value="wxDECLARE_EVENT_TABLE()"/>
   <define name="wxDECLARE_EVENT_TABLE()" value="private: static const wxEventTableEntry sm_eventTableEntries[]; protected: const wxEventTable* GetEventTable() const; wxEventHashTable&amp; GetEventHashTable() const; static const wxEventTable sm_eventTable; static wxEventHashTable sm_eventHashTable;"/>
   <define name="wxIMPLEMENT_APP(appname)" value="wxIMPLEMENT_WX_THEME_SUPPORT wxIMPLEMENT_APP_NO_THEMES(appname)"/>
diff --git a/test/cfg/wxwidgets.cpp b/test/cfg/wxwidgets.cpp
index e04c57d32..a9555cb2a 100644
--- a/test/cfg/wxwidgets.cpp
+++ b/test/cfg/wxwidgets.cpp
@@ -52,10 +52,16 @@ void nullPointer(void)
     wxLogMessage((char*)NULL);
 }
 
-void ignoredReturnValue(void)
+void ignoredReturnValue(const wxString &s)
 {
     // cppcheck-suppress ignoredReturnValue
     wxGetCwd();
+    // cppcheck-suppress ignoredReturnValue
+    wxAtoi(s);
+    // cppcheck-suppress ignoredReturnValue
+    wxAtol(s);
+    // cppcheck-suppress ignoredReturnValue
+    wxAtof(s);
 }
 
 void invalidFunctionArg(void)
@@ -74,12 +80,19 @@ void uninitvar(void)
     wxLogLevel logLevelUninit;
     char cBufUninit[10];
     char *pcUninit;
+    wxString emptyString;
     // cppcheck-suppress uninitvar
     wxLogGeneric(logLevelUninit, "test");
     // cppcheck-suppress uninitvar
     wxLogMessage(cBufUninit);
     // cppcheck-suppress uninitvar
     wxLogMessage(pcUninit);
+    // cppcheck-suppress uninitvar
+    (void)wxAtoi(emptyString);
+    // cppcheck-suppress uninitvar
+    (void)wxAtol(emptyString);
+    // cppcheck-suppress uninitvar
+    (void)wxAtof(emptyString);
 }
 
 void uninitvar_SetMenuBar(wxFrame * const framePtr, wxMenuBar * const menuBarPtr)