3 ms·

You're not always printing to a terminal, char buf[10]; const char* foo = "wrong?"; int res = snprintf(buf, 20, "What could possibly go %d", foo);

• jholine 4y ago
  Solved problem since ages ago. error: format '%d' expects argument of type 'int', but argument 4 has type 'const char*' [-Werror=format=] You only get into trouble when you use runtime format strings (like passing a user string as first argument to printf)
  • maccard 4y ago
    That doesn't work on MSVC, and ignores multiple other issues with the 3 lines of code I shared (and as you correctly identified doesn't work with runtime format strings. It also doesn't work if your code isn't a textbook example of being wrong. [0] is _slightly_ more contrived but still suffers all of the exact same problems, despite all of the information being available at compile time. [0] https://gcc.godbolt.org/z/9vK3W4bYh https://gcc.godbolt.org/z/9vK3W4bYh