Function use_static_assertions

build.rs:200–203

()

}

fn use_static_assertions() -> bool {
    // `offset_from` was made const in Rust 1.65.
    can_compile("const unsafe fn foo(p: *const u8) -> isize { p.offset_from(p) }")
}

fn use_thumb_mode() -> bool {
    // In thumb mode, r7 is reserved.