silence gcc warnings in "vararg" functions such as wxPrintf when compiling with -Wformat-security

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@58126 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

include/wx/strvararg.h

@@ -154,11 +154,15 @@ public:
     // n-th variadic argument desired representation
     ArgumentType GetArgumentType(unsigned n) const;
 
+    // returns the value passed to ctor, only converted to wxString, similarly
+    // to other InputAsXXX() methods
+    wxString InputAsString() const;
+
 #if !wxUSE_UNICODE_WCHAR
     operator const char*() const
         { return const_cast<wxFormatString*>(this)->AsChar(); }
 private:
-    // InputAsChar() returns the value converted passed to ctor, only converted
+    // InputAsChar() returns the value passed to ctor, only converted
     // to char, while AsChar() takes the the string returned by InputAsChar()
     // and does format string conversion on it as well (and similarly for
     // ..AsWChar() below)

include/wx/wxcrtvararg.h

@@ -281,10 +281,20 @@
     #define wxCRT_FprintfNative wxCRT_FprintfA
 #endif
 
-WX_DEFINE_VARARG_FUNC(int, wxPrintf, 1, (const wxFormatString&),
+
+WX_DEFINE_VARARG_FUNC_SANS_N0(int, wxPrintf, 1, (const wxFormatString&),
                               wxCRT_PrintfNative, wxCRT_PrintfA)
-WX_DEFINE_VARARG_FUNC(int, wxFprintf, 2, (FILE*, const wxFormatString&),
+inline int wxPrintf(const wxFormatString& s)
+{
+    return wxPrintf("%s", s.InputAsString());
+}
+
+WX_DEFINE_VARARG_FUNC_SANS_N0(int, wxFprintf, 2, (FILE*, const wxFormatString&),
                               wxCRT_FprintfNative, wxCRT_FprintfA)
+inline int wxFprintf(FILE *f, const wxFormatString& s)
+{
+    return wxFprintf(f, "%s", s.InputAsString());
+}
 
 // va_list versions of printf functions simply forward to the respective
 // CRT function; note that they assume that va_list was created using
@@ -426,10 +436,6 @@ wxVsnprintf(wchar_t *str, size_t size, const wxString& format, va_list argptr);
     }
 
 #define WX_DEFINE_SCANFUNC(name, numfixed, fixed, impl, passfixed)            \
-    inline int name(_WX_SCANFUNC_EXTRACT_ARGS(numfixed, fixed))               \
-    {                                                                         \
-        return impl(_WX_SCANFUNC_EXTRACT_ARGS(numfixed, passfixed));          \
-    }                                                                         \
     _WX_VARARG_ITER(_WX_VARARG_MAX_ARGS,                                      \
                     _WX_DEFINE_SCANFUNC,                                      \
                     dummy1, name, impl, passfixed, numfixed, fixed)

src/common/strvararg.cpp

@@ -611,6 +611,21 @@ const wchar_t* wxFormatString::AsWChar()
 }
 #endif // wxUSE_UNICODE && !wxUSE_UTF8_LOCALE_ONLY
 
+wxString wxFormatString::InputAsString() const
+{
+    if ( m_str )
+        return *m_str;
+    if ( m_cstr )
+        return m_cstr->AsString();
+    if ( m_wchar )
+        return wxString(m_wchar);
+    if ( m_char )
+        return wxString(m_char);
+
+    wxFAIL_MSG( "invalid wxFormatString - not initialized?" );
+    return wxString();
+}
+
 // ----------------------------------------------------------------------------
 // wxFormatString::GetArgumentType()
 // ----------------------------------------------------------------------------