diff --git a/cfg/std.cfg b/cfg/std.cfg
index 7624ba91e..3b153f6a3 100644
--- a/cfg/std.cfg
+++ b/cfg/std.cfg
@@ -7914,11 +7914,11 @@ initializer list (7) string& replace (const_iterator i1, const_iterator i2, init
       <not-bool/>
     </arg>
   </function>
-  <!-- bool all() const noexcept; (since C++11) -->
-  <!-- bool any() const; (until C++11) -->
-  <!-- bool any() const noexcept; (since C++11) -->
-  <!-- bool none() const; (until C++11) -->
-  <!-- bool none() const noexcept; (since C++11)-->
+  <!-- bool std::bitset::all() const noexcept; (since C++11) -->
+  <!-- bool std::bitset::any() const; (until C++11) -->
+  <!-- bool std::bitset::any() const noexcept; (since C++11) -->
+  <!-- bool std::bitset::none() const; (until C++11) -->
+  <!-- bool std::bitset::none() const noexcept; (since C++11)-->
   <function name="std::bitset::all,std::bitset::any,std::bitset::none">
     <noreturn>false</noreturn>
     <use-retval/>
@@ -7926,6 +7926,17 @@ initializer list (7) string& replace (const_iterator i1, const_iterator i2, init
     <leak-ignore/>
     <const/>
   </function>
+  <!-- std::size_t std::bitset::count() const; (until C++11) -->
+  <!-- std::size_t  std::bitset::count() const noexcept; (since C++11)-->
+  <!-- std::size_t  std::bitset::size() const; (until C++11) -->
+  <!-- constexpr std::size_t std::bitset::size() const noexcept; (since C++11)-->
+  <function name="std::bitset::count,std::bitset::size">
+    <noreturn>false</noreturn>
+    <use-retval/>
+    <returnValue type="std::size_t"/>
+    <leak-ignore/>
+    <const/>
+  </function>
   <!-- bool std::bitset< N >::test( std::size_t pos ) const -->
   <function name="std::bitset::test">
     <noreturn>false</noreturn>
diff --git a/test/cfg/std.cpp b/test/cfg/std.cpp
index 3cb17d928..0b4a49cb2 100644
--- a/test/cfg/std.cpp
+++ b/test/cfg/std.cpp
@@ -62,6 +62,22 @@ std::bitset<10> std_bitset_any_ignoredReturnValue()
     return b1;
 }
 
+std::bitset<10> std_bitset_size_ignoredReturnValue()
+{
+    std::bitset<10> b1("1111010000");
+    // cppcheck-suppress ignoredReturnValue
+    b1.size();
+    return b1;
+}
+
+std::bitset<10> std_bitset_count_ignoredReturnValue()
+{
+    std::bitset<10> b1("1111010000");
+    // cppcheck-suppress ignoredReturnValue
+    b1.count();
+    return b1;
+}
+
 void valid_code()
 {
     std::vector<int> vecInt{0, 1, 2};