Is this invalidScanfArgType_int a false positive warning?

[AlexHsieh]

Using cppcheck 2.18.0 to check this code:

struct ST {
    unsigned char  a[1];
};
void f(){
    ST st;
    sscanf("1", "%hhu", st.a);
}

got this warning:

test.cpp:6:5: warning: %hhu in format string (no. 1) requires 'unsigned char *' but the argument type is 'const char *'. [invalidScanfArgType_int]
    sscanf("1", "%hhu", st.a);
    ^

Is this a false positive warning?

[CHR]

Thanks for reporting, ticket is here: https://trac.cppcheck.net/ticket/14302

[AlexHsieh]

Thank you for confirming.