diff --git a/cfg/std.cfg b/cfg/std.cfg
index b036a932c..46839583e 100644
--- a/cfg/std.cfg
+++ b/cfg/std.cfg
@@ -36,6 +36,8 @@
   <define name="UINT_LEAST16_MAX" value="65535"/>
   <define name="UINT_LEAST32_MAX" value="4294967295"/>
   <define name="UINT_LEAST64_MAX" value="18446744073709551615"/>
+  <!-- errno_t is a typedef for int -->
+  <define name="errno_t" value="int"/>
   <!-- void abort(void); -->
   <function name="abort,std::abort">
     <noreturn>true</noreturn>
@@ -6789,6 +6791,8 @@ The obsolete function 'gets' is called. With 'gets' you'll get a buffer overrun
   <podtype name="intmax_t,std::intmax_t" sign="s"/>
   <podtype name="uintmax_t,std::uintmax_t" sign="u"/>
   <podtype name="size_t" sign="u"/>
+  <!-- rsize_t is a typedef for size_t -->
+  <podtype name="rsize_t" sign="u"/>
   <podtype name="double_t"/>
   <podtype name="float_t"/>
   <podtype name="time_t"/>