Ignoring return values in C

Question

Lately, I started using lint for static code analysis. One of the warning I get sometimes is regarding this issue. Let\'s say for instance that I\'ve got the following funct

Answer 1

One way to do this with Clang and GCC compilers is with a pragma:

    /* ... */

#pragma GCC diagnostic push
#pragma GCC diagnostic ignored "-Wunused-result" 

    foo(); /* this specific unused-result warning gets ignored during compilation */

#pragma GCC diagnostic pop 

    /* ... */

The push-pop combination wraps the ignored directive so that warnings can be triggered elsewhere in your code. It should be easier for anyone reading your source code down the road to see what this code block does.