Finds occurrences of string literal with embedded NUL character and validates their usage.
Special characters can be escaped within a string literal by using their
hexadecimal encoding like
\x42. A common mistake is to escape them
\0x42 where the
\0 stands for the NUL character.
const char* Example = "Invalid character: \0x12 should be \x12"; const char* Bytes = "\x03\0x02\0x01\0x00\0xFF\0xFF\0xFF";
String-like classes can manipulate strings with embedded NUL as they are keeping
track of the bytes and the length. This is not the case for a
A common mistake is to pass a string-literal with embedded NUL to a string constructor expecting a NUL-terminated string. The bytes after the first NUL character are truncated.
std::string str("abc\0def"); // "def" is truncated str += "\0"; // This statement is doing nothing if (str == "\0abc") return; // This expression is always true