mirror of
https://github.com/rust-lang/rust.git
synced 2024-11-23 07:14:28 +00:00
72800d3b89
Except for `simd-intrinsic/`, which has a lot of files containing multiple types like `u8x64` which really are better when hand-formatted. There is a surprising amount of two-space indenting in this directory. Non-trivial changes: - `rustfmt::skip` needed in `debug-column.rs` to preserve meaning of the test. - `rustfmt::skip` used in a few places where hand-formatting read more nicely: `enum/enum-match.rs` - Line number adjustments needed for the expected output of `debug-column.rs` and `coroutine-debug.rs`.
26 lines
999 B
Rust
26 lines
999 B
Rust
//@ compile-flags: -Cno-prepopulate-passes -Copt-level=0 -Cdebug-assertions=no
|
|
|
|
// This test ensures that in a debug build which turns off debug assertions, we do not monomorphize
|
|
// any of the standard library's unsafe precondition checks.
|
|
// The naive codegen of those checks contains the actual check underneath an `if false`, which
|
|
// could be optimized out if optimizations are enabled. But if we rely on optimizations to remove
|
|
// panic branches, then we can't link compiler_builtins without optimizing it, which means that
|
|
// -Zbuild-std doesn't work with -Copt-level=0.
|
|
//
|
|
// In other words, this tests for a mandatory optimization.
|
|
|
|
#![crate_type = "lib"]
|
|
|
|
use std::ptr::NonNull;
|
|
|
|
// CHECK-LABEL: ; core::ptr::non_null::NonNull<T>::new_unchecked
|
|
// CHECK-NOT: call
|
|
// CHECK: }
|
|
|
|
// CHECK-LABEL: @nonnull_new
|
|
#[no_mangle]
|
|
pub unsafe fn nonnull_new(ptr: *mut u8) -> NonNull<u8> {
|
|
// CHECK: ; call core::ptr::non_null::NonNull<T>::new_unchecked
|
|
unsafe { NonNull::new_unchecked(ptr) }
|
|
}
|