Mateusz Loskot wrote:
Currently I get compiler warnings about my_param being unused when compiling with NDEBUG defined.
Yes, that is a problem though of different nature than categories of assertions.
I'd be glad to get rid of them. And I certainly do not want to have my code sprinkled with
#ifdef NDEBUG void my_method(const int&) #else void my_method(const int& my_param) #endif { assert(my_param); }
AFAIK, this is an issue of particular implementation you use. The assert macro from GNU C Library wraps its argument cast to void if NDEBUG is defined. No warning is issued.
Best regards,
Hmm. I use gcc (4.2.4) and I get the warning (-Wall -Wextra). That's why I proposed that code in the other part of this discussion (with great help from Peter and Steven): #include <cassert> #ifdef NDEBUG #ifdef assert #undef assert #define assert(cond) static_cast<void>(sizeof(cond? 0: 0)); #endif #endif int main() { int i = 0; assert(i); } This way, I get no warning about variable i being unused, it is even being made sure that the condition for the assertion is verifiable and still the code results in nothing if NDEBUG is defined. I plan on using that myself. I think it would be useful for others, too. Regards, Roland