From 218caa410aa38c29984be31a5229b9fa717560ee Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Wed, 17 Apr 2024 14:19:13 +0200 Subject: Merging upstream version 1.68.2+dfsg1. Signed-off-by: Daniel Baumann --- tests/ui/intrinsics/intrinsic-volatile.rs | 44 +++++++++++++++++++++++++++++++ 1 file changed, 44 insertions(+) create mode 100644 tests/ui/intrinsics/intrinsic-volatile.rs (limited to 'tests/ui/intrinsics/intrinsic-volatile.rs') diff --git a/tests/ui/intrinsics/intrinsic-volatile.rs b/tests/ui/intrinsics/intrinsic-volatile.rs new file mode 100644 index 000000000..7b2c825a2 --- /dev/null +++ b/tests/ui/intrinsics/intrinsic-volatile.rs @@ -0,0 +1,44 @@ +// run-pass + +#![feature(core_intrinsics)] + +use std::intrinsics::*; + +pub fn main() { + unsafe { + let mut x: Box = Box::new(0); + let mut y: Box = Box::new(0); + + // test volatile load + assert_eq!(volatile_load(&*x), 0); + *x = 1; + assert_eq!(volatile_load(&*x), 1); + + // test volatile store + volatile_store(&mut *x, 2); + assert_eq!(*x, 2); + + // test volatile copy memory + volatile_copy_memory(&mut *y, &*x, 1); + assert_eq!(*y, 2); + + // test volatile copy non-overlapping memory + *x = 3; + volatile_copy_nonoverlapping_memory(&mut *y, &*x, 1); + assert_eq!(*y, 3); + + // test volatile set memory + volatile_set_memory(&mut *x, 4, 1); + assert_eq!(*x, 4); + + // test unaligned volatile load + let arr: [u8; 3] = [1, 2, 3]; + let ptr = arr[1..].as_ptr() as *const u16; + assert_eq!(unaligned_volatile_load(ptr), u16::from_ne_bytes([arr[1], arr[2]])); + + // test unaligned volatile store + let ptr = arr[1..].as_ptr() as *mut u16; + unaligned_volatile_store(ptr, 0); + assert_eq!(arr, [1, 0, 0]); + } +} -- cgit v1.2.3