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Diffstat (limited to 'src/test/ui/consts/offset_from_ub.rs')
-rw-r--r--src/test/ui/consts/offset_from_ub.rs125
1 files changed, 0 insertions, 125 deletions
diff --git a/src/test/ui/consts/offset_from_ub.rs b/src/test/ui/consts/offset_from_ub.rs
deleted file mode 100644
index 51163e650..000000000
--- a/src/test/ui/consts/offset_from_ub.rs
+++ /dev/null
@@ -1,125 +0,0 @@
-#![feature(const_ptr_sub_ptr)]
-#![feature(core_intrinsics)]
-
-use std::intrinsics::{ptr_offset_from, ptr_offset_from_unsigned};
-use std::ptr;
-
-#[repr(C)]
-struct Struct {
- data: u8,
- field: u8,
-}
-
-pub const DIFFERENT_ALLOC: usize = {
- let uninit = std::mem::MaybeUninit::<Struct>::uninit();
- let base_ptr: *const Struct = &uninit as *const _ as *const Struct;
- let uninit2 = std::mem::MaybeUninit::<Struct>::uninit();
- let field_ptr: *const Struct = &uninit2 as *const _ as *const Struct;
- let offset = unsafe { ptr_offset_from(field_ptr, base_ptr) }; //~ERROR evaluation of constant value failed
- //~| pointers into different allocations
- offset as usize
-};
-
-pub const NOT_PTR: usize = {
- unsafe { (42 as *const u8).offset_from(&5u8) as usize }
-};
-
-pub const NOT_MULTIPLE_OF_SIZE: isize = {
- let data = [5u8, 6, 7];
- let base_ptr = data.as_ptr();
- let field_ptr = &data[1] as *const u8 as *const u16;
- unsafe { ptr_offset_from(field_ptr, base_ptr as *const u16) } //~ERROR evaluation of constant value failed
- //~| 1_isize cannot be divided by 2_isize without remainder
-};
-
-pub const OFFSET_FROM_NULL: isize = {
- let ptr = 0 as *const u8;
- unsafe { ptr_offset_from(ptr, ptr) } //~ERROR evaluation of constant value failed
- //~| null pointer is a dangling pointer
-};
-
-pub const DIFFERENT_INT: isize = { // offset_from with two different integers: like DIFFERENT_ALLOC
- let ptr1 = 8 as *const u8;
- let ptr2 = 16 as *const u8;
- unsafe { ptr_offset_from(ptr2, ptr1) } //~ERROR evaluation of constant value failed
- //~| 0x8[noalloc] is a dangling pointer
-};
-
-const OUT_OF_BOUNDS_1: isize = {
- let start_ptr = &4 as *const _ as *const u8;
- let length = 10;
- let end_ptr = (start_ptr).wrapping_add(length);
- // First ptr is out of bounds
- unsafe { ptr_offset_from(end_ptr, start_ptr) } //~ERROR evaluation of constant value failed
- //~| pointer to 10 bytes starting at offset 0 is out-of-bounds
-};
-
-const OUT_OF_BOUNDS_2: isize = {
- let start_ptr = &4 as *const _ as *const u8;
- let length = 10;
- let end_ptr = (start_ptr).wrapping_add(length);
- // Second ptr is out of bounds
- unsafe { ptr_offset_from(start_ptr, end_ptr) } //~ERROR evaluation of constant value failed
- //~| pointer to 10 bytes starting at offset 0 is out-of-bounds
-};
-
-const OUT_OF_BOUNDS_SAME: isize = {
- let start_ptr = &4 as *const _ as *const u8;
- let length = 10;
- let end_ptr = (start_ptr).wrapping_add(length);
- unsafe { ptr_offset_from(end_ptr, end_ptr) } //~ERROR evaluation of constant value failed
- //~| pointer at offset 10 is out-of-bounds
-};
-
-pub const DIFFERENT_ALLOC_UNSIGNED: usize = {
- let uninit = std::mem::MaybeUninit::<Struct>::uninit();
- let base_ptr: *const Struct = &uninit as *const _ as *const Struct;
- let uninit2 = std::mem::MaybeUninit::<Struct>::uninit();
- let field_ptr: *const Struct = &uninit2 as *const _ as *const Struct;
- unsafe { ptr_offset_from_unsigned(field_ptr, base_ptr) } //~ERROR evaluation of constant value failed
- //~| pointers into different allocations
-};
-
-pub const TOO_FAR_APART1: isize = {
- let ptr1 = ptr::null::<u8>();
- let ptr2 = ptr1.wrapping_add(isize::MAX as usize + 42);
- unsafe { ptr_offset_from(ptr2, ptr1) } //~ERROR evaluation of constant value failed
- //~| too far ahead
-};
-pub const TOO_FAR_APART2: isize = {
- let ptr1 = ptr::null::<u8>();
- let ptr2 = ptr1.wrapping_add(isize::MAX as usize + 42);
- unsafe { ptr_offset_from(ptr1, ptr2) } //~ERROR evaluation of constant value failed
- //~| too far before
-};
-
-const WRONG_ORDER_UNSIGNED: usize = {
- let a = ['a', 'b', 'c'];
- let p = a.as_ptr();
- unsafe { ptr_offset_from_unsigned(p, p.add(2) ) } //~ERROR evaluation of constant value failed
- //~| first pointer has smaller offset than second: 0 < 8
-};
-pub const TOO_FAR_APART_UNSIGNED: usize = {
- let ptr1 = ptr::null::<u8>();
- let ptr2 = ptr1.wrapping_add(isize::MAX as usize + 42);
- // This would fit into a `usize` but we still don't allow it.
- unsafe { ptr_offset_from_unsigned(ptr2, ptr1) } //~ERROR evaluation of constant value failed
- //~| too far ahead
-};
-
-// These do NOT complain that pointers are too far apart; they pass that check (to then fail the
-// next one).
-pub const OFFSET_VERY_FAR1: isize = {
- let ptr1 = ptr::null::<u8>();
- let ptr2 = ptr1.wrapping_offset(isize::MAX);
- unsafe { ptr2.offset_from(ptr1) }
- //~^ inside
-};
-pub const OFFSET_VERY_FAR2: isize = {
- let ptr1 = ptr::null::<u8>();
- let ptr2 = ptr1.wrapping_offset(isize::MAX);
- unsafe { ptr1.offset_from(ptr2.wrapping_offset(1)) }
- //~^ inside
-};
-
-fn main() {}