False positive Unusual pointer arithmetic

[Robert]

I'm getting a false positive (Unusual pointer arithmetic. A value of type 'char' is added to a string literal. [strPlusChar]) on the follwing code

void function(void)
{ 
  std::string l_Test;
  l_Test = "FooBar"s + 'a';
}

Although “FooBar”s returns a std::string which has a valid operator+ for char

[Daniel Marjamäki]

alright.. "FooBar"s is not understood by compilers by default.. I assume you have an operator for that?

[Zufu Liu]

it seems "s" suffix (along with others) is from the C++ standard library, see last section on https://en.cppreference.com/w/cpp/language/user_literal

[Daniel Marjamäki]

yes I assume there must be an operator.

Cppcheck does not handle this code well. I created a ticket: https://trac.cppcheck.net/ticket/9787