How to get warnings of incorrect string formatting (C++)

Question

apologies in advance if i use poor terminology.

when i compile a C++ app under gdb and use printf() it gives me awesome warnings relating to the consistency of the forma

Answer 1

You can do stuff like this for your own printf-like functions (as well as for scanf/strftime/strfmon-like functions):

#define PRINTF_FORMAT_CHECK(format_index, args_index) __attribute__ ((__format__(printf, format_index, args_index)))

void my_printf(const char *fmt, ...) PRINTF_FORMAT_CHECK(1, 2);

See the gcc manual for further details.