diff --git a/cfg/std.cfg b/cfg/std.cfg
index 7842dc05f..ae96b397c 100644
--- a/cfg/std.cfg
+++ b/cfg/std.cfg
@@ -2319,6 +2319,28 @@
       <valid>0:</valid>
     </arg>
   </function>
+  <!-- int wmemcmp (const wchar_t* ptr1, const wchar_t* ptr2, size_t num);-->
+  <function name="wmemcmp,std::wmemcmp">
+    <use-retval/>
+    <pure/>
+    <noreturn>false</noreturn>
+    <leak-ignore/>
+    <arg nr="1">
+      <not-null/>
+      <not-uninit/>
+      <minsize type="argvalue" arg="3"/>
+    </arg>
+    <arg nr="2">
+      <not-null/>
+      <not-uninit/>
+      <minsize type="argvalue" arg="3"/>
+    </arg>
+    <arg nr="3">
+      <not-uninit/>
+      <not-bool/>
+      <valid>0:</valid>
+    </arg>
+  </function>
   <!-- void * memcpy(void *ct, const void *cs, size_t n);-->
   <function name="memcpy,std::memcpy">
     <noreturn>false</noreturn>
diff --git a/test/cfg/std.c b/test/cfg/std.c
index b6d4ea178..e332b418d 100644
--- a/test/cfg/std.c
+++ b/test/cfg/std.c
@@ -177,7 +177,7 @@ void nullpointerMemchr2(char *p, char *s)
     p = memchr(s, 0, strlen(s));
 }
 
-void nullpointerMemchr3(char *p)
+void nullPointer_memchr(char *p)
 {
     char *s = 0;
     // cppcheck-suppress nullPointer
@@ -185,13 +185,17 @@ void nullpointerMemchr3(char *p)
     p = memchr(s, 0, strlen(s));
 }
 
-void nullpointerMemcmp(char *p)
+void nullPointer_memcmp(char *p)
 {
-    // cppcheck-suppress ignoredReturnValue
     // cppcheck-suppress nullPointer
-    memcmp(p, 0, 123);
+    (void)memcmp(p, 0, 123);
 }
 
+void nullPointer_wmemcmp(wchar_t *p)
+{
+    // cppcheck-suppress nullPointer
+    (void)wmemcmp(p, 0, 123);
+}
 
 // uninit pointers
 
@@ -2395,6 +2399,15 @@ void uninitvar_memcmp(void)
     (void)memcmp(s1,s2,n);
 }
 
+void uninitvar_wmemcmp(void)
+{
+    wchar_t *s1;
+    wchar_t *s2;
+    size_t n;
+    // cppcheck-suppress uninitvar
+    (void)wmemcmp(s1,s2,n);
+}
+
 void uninitvar_memcpy(void)
 {
     void *ct;
diff --git a/test/cfg/std.cpp b/test/cfg/std.cpp
index e73a85b47..8af4d67c2 100644
--- a/test/cfg/std.cpp
+++ b/test/cfg/std.cpp
@@ -1747,6 +1747,15 @@ void uninitvar_memcmp(void)
     (void)std::memcmp(s1,s2,n);
 }
 
+void uninitvar_wmemcmp(void)
+{
+    wchar_t *s1;
+    wchar_t *s2;
+    size_t n;
+    // cppcheck-suppress uninitvar
+    (void)std::wmemcmp(s1,s2,n);
+}
+
 void uninitvar_memcpy(void)
 {
     void *ct;
@@ -2870,12 +2879,12 @@ void uninitvar_find(std::string s)
     char c;
     // cppcheck-suppress uninitvar
     (void)s.find(c,pos);
-/*
-    // testing of size_t find (const char* pc, size_t pos, size_t n) const;
-    size_t n;
-    // cppcheck-suppress uninitvar
-    (void)s.find(pc,pos,n); // #6991
-*/
+    /*
+        // testing of size_t find (const char* pc, size_t pos, size_t n) const;
+        size_t n;
+        // cppcheck-suppress uninitvar
+        (void)s.find(pc,pos,n); // #6991
+    */
 }
 
 void invalidFunctionArgBool_abs(bool b, double x, double y)
@@ -2986,3 +2995,15 @@ void nullPointer_atof(void)
     // cppcheck-suppress nullPointer
     (void)std::atof(0);
 }
+
+void nullPointer_memcmp(char *p)
+{
+    // cppcheck-suppress nullPointer
+    (void)std::memcmp(p, 0, 123);
+}
+
+void nullPointer_wmemcmp(wchar_t *p)
+{
+    // cppcheck-suppress nullPointer
+    (void)std::wmemcmp(p, 0, 123);
+}