Debugging Macros for C

gistfile1.c

// Define debugging macros. Because actual code shouldn't be littered with
// debugging printfs and sanity check assertations.
#ifdef DEBUG
#define debug_assert(...) assert(__VA_ARGS__)
#define debug_printf(...) printf(__VA_ARGS__)
#else
#define debug_assert(...) ;
#define debug_printf(...) ;
#endif

Based on @kejistan's work. Modifications to have an assert as well as printf (leaving assert in prod code does not change functionality but may affect performance) and to make the NOP more clear (a single ; will work and will be unused by the compiler regardless of optimization flags).

Some notes: debug_assert is useful for some assert functions, including the one I'm using in my malloc code. It's probably not needed if you're using <assert.h>, since if NDEBUG is defined before assert.h is included, the assert function is replaced with a NOP.