alt Hacker NewsPurely out of interest, and probably my bad, but what is:
(void)k_sz;
(void) printf( "hello" );
Replies
lang4d • 12/08/2024
That would be one way to silence an unused variable warning
ryanpetrich • 12/08/2024
This is to suppress a compiler warning that the k_sz argument is unused.
secondcoming • 12/08/2024
It silences 'unused variable' warnings.
It's an idiom for telling the compiler “don't give a warning on this argument not being used, I know about it”. Not all compilers will heed it. Other choices include e.g. __attribute__((unused)) (GNU), [[maybe_unused]] (C++17/C23) or just not giving it a name (nonstandard, but very commonly supported).