fn memcmp_check()

in aws-lc-sys/builder/cc_builder.rs [444:506]
60 lines of code
4 McCabe index (conditional complexity)

    fn memcmp_check(&self) {
        let basename = "memcmp_invalid_stripped_check";
        let exec_path = out_dir().join(basename);
        let memcmp_build = cc::Build::default();
        let memcmp_compiler = memcmp_build.get_compiler();
        if !memcmp_compiler.is_like_clang() && !memcmp_compiler.is_like_gnu() {
            // The logic below assumes a Clang or GCC compiler is in use
            return;
        }
        let mut memcmp_compile_args = Vec::from(memcmp_compiler.args());
        memcmp_compile_args.push(
            self.manifest_dir
                .join("aws-lc")
                .join("tests")
                .join("compiler_features_tests")
                .join(format!("{basename}.c"))
                .into_os_string(),
        );
        memcmp_compile_args.push("-Wno-unused-parameter".into());
        memcmp_compile_args.push("-o".into());
        memcmp_compile_args.push(exec_path.clone().into_os_string());
        let memcmp_args: Vec<_> = memcmp_compile_args
            .iter()
            .map(std::ffi::OsString::as_os_str)
            .collect();
        let memcmp_compile_result =
            execute_command(memcmp_compiler.path().as_os_str(), memcmp_args.as_slice());
        assert!(
            memcmp_compile_result.status,
            "COMPILER: {}\
            ARGS: {:?}\
            EXECUTED: {}\
            ERROR: {}\
            OUTPUT: {}\
            Failed to compile {basename}
            ",
            memcmp_compiler.path().display(),
            memcmp_args.as_slice(),
            memcmp_compile_result.executed,
            memcmp_compile_result.stderr,
            memcmp_compile_result.stdout
        );

        // We can only execute the binary when the host and target platforms match.
        if cargo_env("HOST") == target() {
            let result = execute_command(exec_path.as_os_str(), &[]);
            assert!(
                result.status,
                "### COMPILER BUG DETECTED ###\nYour compiler ({}) is not supported due to a memcmp related bug reported in \
                https://gcc.gnu.org/bugzilla/show_bug.cgi?id=95189. \
                We strongly recommend against using this compiler. \n\
                EXECUTED: {}\n\
                ERROR: {}\n\
                OUTPUT: {}\n\
                ",
                memcmp_compiler.path().display(),
                memcmp_compile_result.executed,
                memcmp_compile_result.stderr,
                memcmp_compile_result.stdout
            );
        }
        let _ = fs::remove_file(exec_path);
    }