std.cfg: Added more tests

cfg/std.cfg

@@ -5126,6 +5126,7 @@ The obsolete function 'gets' is called. With 'gets' you'll get a buffer overrun
     <returnValue type="size_t"/>
     <noreturn>false</noreturn>
     <leak-ignore/>
+    <not-overlapping-data ptr1-arg="1" ptr2-arg="2" size-arg="3"/>
     <!-- In case the 3rd argument is 0, the 1st argument is permitted to be a null pointer. (#6306) -->
     <arg nr="1" direction="out"/>
     <arg nr="2" direction="in">

test/cfg/std.c

@@ -381,6 +381,24 @@ void nullpointer(int value)
     wscanf(L"%i", NULL);
 }
 
+int nullPointer_wcsncmp(const wchar_t* s1, const wchar_t* s2, size_t n)
+{
+    // cppcheck-suppress nullPointer
+    (void) wcsncmp(NULL,s2,n);
+    // cppcheck-suppress nullPointer
+    (void) wcsncmp(s1,NULL,n);
+    return wcsncmp(s1,s2,n);
+}
+
+wchar_t* nullPointer_wcsncpy(wchar_t *s, const wchar_t *cs, size_t n)
+{
+    // cppcheck-suppress nullPointer
+    (void) wcsncpy(NULL,cs,n);
+    // cppcheck-suppress nullPointer
+    (void) wcsncpy(s,NULL,n);
+    return wcsncpy(s,cs,n);
+}
+
 size_t nullPointer_strlen(const char *s)
 {
     // cppcheck-suppress nullPointer

test/cfg/std.cpp

@@ -110,6 +110,12 @@ void overlappingWriteFunction_wcscat(wchar_t *src, wchar_t *dest)
     (void)wcscat(src, src);
 }
 
+void overlappingWriteFunction_wcsxfrm(wchar_t *s1, wchar_t *s2, size_t n)
+{
+    // No warning shall be shown:
+    (void)wcsxfrm(s1, s2, n);
+}
+
 char * overlappingWriteFunction_strcat(char *src, char *dest)
 {
     // No warning shall be shown:
@@ -118,6 +124,24 @@ char * overlappingWriteFunction_strcat(char *src, char *dest)
     return strcat(src, src);
 }
 
+int nullPointer_wcsncmp(const wchar_t* s1, const wchar_t* s2, size_t n)
+{
+    // cppcheck-suppress nullPointer
+    (void) std::wcsncmp(NULL,s2,n);
+    // cppcheck-suppress nullPointer
+    (void) std::wcsncmp(s1,NULL,n);
+    return std::wcsncmp(s1,s2,n);
+}
+
+wchar_t* nullPointer_wcsncpy(wchar_t *s, const wchar_t *cs, size_t n)
+{
+    // cppcheck-suppress nullPointer
+    (void) std::wcsncpy(NULL,cs,n);
+    // cppcheck-suppress nullPointer
+    (void) std::wcsncpy(s,NULL,n);
+    return std::wcsncpy(s,cs,n);
+}
+
 char * overlappingWriteFunction_strncat(char *src, char *dest, const std::size_t count)
 {
     // No warning shall be shown: