From 698f8c2f01ea549d77d7dc3338a12e04c11057b9 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Wed, 17 Apr 2024 14:02:58 +0200 Subject: Adding upstream version 1.64.0+dfsg1. Signed-off-by: Daniel Baumann --- src/test/ui/consts/copy-intrinsic.rs | 52 ++++++++++++++++++++++++++++++++++++ 1 file changed, 52 insertions(+) create mode 100644 src/test/ui/consts/copy-intrinsic.rs (limited to 'src/test/ui/consts/copy-intrinsic.rs') diff --git a/src/test/ui/consts/copy-intrinsic.rs b/src/test/ui/consts/copy-intrinsic.rs new file mode 100644 index 000000000..249bbb599 --- /dev/null +++ b/src/test/ui/consts/copy-intrinsic.rs @@ -0,0 +1,52 @@ +#![stable(feature = "dummy", since = "1.0.0")] + +// ignore-tidy-linelength +#![feature(intrinsics, staged_api)] +#![feature(const_mut_refs)] +use std::mem; + +extern "rust-intrinsic" { + #[rustc_const_stable(feature = "const_intrinsic_copy", since = "1.63.0")] + fn copy_nonoverlapping(src: *const T, dst: *mut T, count: usize); + + #[rustc_const_stable(feature = "const_intrinsic_copy", since = "1.63.0")] + fn copy(src: *const T, dst: *mut T, count: usize); +} + +const COPY_ZERO: () = unsafe { + // Since we are not copying anything, this should be allowed. + let src = (); + let mut dst = (); + copy_nonoverlapping(&src as *const _ as *const i32, &mut dst as *mut _ as *mut i32, 0); +}; + +const COPY_OOB_1: () = unsafe { + let mut x = 0i32; + let dangle = (&mut x as *mut i32).wrapping_add(10); + // Even if the first ptr is an int ptr and this is a ZST copy, we should detect dangling 2nd ptrs. + copy_nonoverlapping(0x100 as *const i32, dangle, 0); //~ ERROR evaluation of constant value failed [E0080] + //~| pointer at offset 40 is out-of-bounds +}; +const COPY_OOB_2: () = unsafe { + let x = 0i32; + let dangle = (&x as *const i32).wrapping_add(10); + // Even if the second ptr is an int ptr and this is a ZST copy, we should detect dangling 1st ptrs. + copy_nonoverlapping(dangle, 0x100 as *mut i32, 0); //~ ERROR evaluation of constant value failed [E0080] + //~| pointer at offset 40 is out-of-bounds +}; + +const COPY_SIZE_OVERFLOW: () = unsafe { + let x = 0; + let mut y = 0; + copy(&x, &mut y, 1usize << (mem::size_of::() * 8 - 1)); //~ ERROR evaluation of constant value failed [E0080] + //~| overflow computing total size of `copy` +}; +const COPY_NONOVERLAPPING_SIZE_OVERFLOW: () = unsafe { + let x = 0; + let mut y = 0; + copy_nonoverlapping(&x, &mut y, 1usize << (mem::size_of::() * 8 - 1)); //~ evaluation of constant value failed [E0080] + //~| overflow computing total size of `copy_nonoverlapping` +}; + +fn main() { +} -- cgit v1.2.3