Merging upstream version 1.68.2+dfsg1.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 159 insertions, 0 deletions

diff --git a/tests/ui/consts/offset_ub.stderr b/tests/ui/consts/offset_ub.stderr
new file mode 100644
index 000000000..c0c851df5
--- /dev/null
+++ b/tests/ui/consts/offset_ub.stderr
@@ -0,0 +1,159 @@
+error[E0080]: evaluation of constant value failed
+  --> $SRC_DIR/core/src/ptr/const_ptr.rs:LL:COL
+   |
+   = note: overflowing in-bounds pointer arithmetic
+   |
+note: inside `ptr::const_ptr::<impl *const u8>::offset`
+  --> $SRC_DIR/core/src/ptr/const_ptr.rs:LL:COL
+note: inside `BEFORE_START`
+  --> $DIR/offset_ub.rs:7:46
+   |
+LL | pub const BEFORE_START: *const u8 = unsafe { (&0u8 as *const u8).offset(-1) };
+   |                                              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+
+error[E0080]: evaluation of constant value failed
+  --> $SRC_DIR/core/src/ptr/const_ptr.rs:LL:COL
+   |
+   = note: out-of-bounds pointer arithmetic: allocN has size 1, so pointer to 2 bytes starting at offset 0 is out-of-bounds
+   |
+note: inside `ptr::const_ptr::<impl *const u8>::offset`
+  --> $SRC_DIR/core/src/ptr/const_ptr.rs:LL:COL
+note: inside `AFTER_END`
+  --> $DIR/offset_ub.rs:8:43
+   |
+LL | pub const AFTER_END: *const u8 = unsafe { (&0u8 as *const u8).offset(2) };
+   |                                           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+
+error[E0080]: evaluation of constant value failed
+  --> $SRC_DIR/core/src/ptr/const_ptr.rs:LL:COL
+   |
+   = note: out-of-bounds pointer arithmetic: allocN has size 100, so pointer to 101 bytes starting at offset 0 is out-of-bounds
+   |
+note: inside `ptr::const_ptr::<impl *const u8>::offset`
+  --> $SRC_DIR/core/src/ptr/const_ptr.rs:LL:COL
+note: inside `AFTER_ARRAY`
+  --> $DIR/offset_ub.rs:9:45
+   |
+LL | pub const AFTER_ARRAY: *const u8 = unsafe { [0u8; 100].as_ptr().offset(101) };
+   |                                             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+
+error[E0080]: evaluation of constant value failed
+  --> $SRC_DIR/core/src/ptr/const_ptr.rs:LL:COL
+   |
+   = note: overflowing in-bounds pointer arithmetic
+   |
+note: inside `ptr::const_ptr::<impl *const u16>::offset`
+  --> $SRC_DIR/core/src/ptr/const_ptr.rs:LL:COL
+note: inside `OVERFLOW`
+  --> $DIR/offset_ub.rs:11:43
+   |
+LL | pub const OVERFLOW: *const u16 = unsafe { [0u16; 1].as_ptr().offset(isize::MAX) };
+   |                                           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+
+error[E0080]: evaluation of constant value failed
+  --> $SRC_DIR/core/src/ptr/const_ptr.rs:LL:COL
+   |
+   = note: overflowing in-bounds pointer arithmetic
+   |
+note: inside `ptr::const_ptr::<impl *const u16>::offset`
+  --> $SRC_DIR/core/src/ptr/const_ptr.rs:LL:COL
+note: inside `UNDERFLOW`
+  --> $DIR/offset_ub.rs:12:44
+   |
+LL | pub const UNDERFLOW: *const u16 = unsafe { [0u16; 1].as_ptr().offset(isize::MIN) };
+   |                                            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+
+error[E0080]: evaluation of constant value failed
+  --> $SRC_DIR/core/src/ptr/const_ptr.rs:LL:COL
+   |
+   = note: overflowing in-bounds pointer arithmetic
+   |
+note: inside `ptr::const_ptr::<impl *const u8>::offset`
+  --> $SRC_DIR/core/src/ptr/const_ptr.rs:LL:COL
+note: inside `OVERFLOW_ADDRESS_SPACE`
+  --> $DIR/offset_ub.rs:13:56
+   |
+LL | pub const OVERFLOW_ADDRESS_SPACE: *const u8 = unsafe { (usize::MAX as *const u8).offset(2) };
+   |                                                        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+
+error[E0080]: evaluation of constant value failed
+  --> $SRC_DIR/core/src/ptr/const_ptr.rs:LL:COL
+   |
+   = note: overflowing in-bounds pointer arithmetic
+   |
+note: inside `ptr::const_ptr::<impl *const u8>::offset`
+  --> $SRC_DIR/core/src/ptr/const_ptr.rs:LL:COL
+note: inside `UNDERFLOW_ADDRESS_SPACE`
+  --> $DIR/offset_ub.rs:14:57
+   |
+LL | pub const UNDERFLOW_ADDRESS_SPACE: *const u8 = unsafe { (1 as *const u8).offset(-2) };
+   |                                                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^
+
+error[E0080]: evaluation of constant value failed
+  --> $SRC_DIR/core/src/ptr/const_ptr.rs:LL:COL
+   |
+   = note: out-of-bounds pointer arithmetic: allocN has size 1, so pointer to 2 bytes starting at offset -4 is out-of-bounds
+   |
+note: inside `ptr::const_ptr::<impl *const u8>::offset`
+  --> $SRC_DIR/core/src/ptr/const_ptr.rs:LL:COL
+note: inside `NEGATIVE_OFFSET`
+  --> $DIR/offset_ub.rs:15:49
+   |
+LL | pub const NEGATIVE_OFFSET: *const u8 = unsafe { [0u8; 1].as_ptr().wrapping_offset(-2).offset(-2) };
+   |                                                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+
+error[E0080]: evaluation of constant value failed
+  --> $SRC_DIR/core/src/ptr/const_ptr.rs:LL:COL
+   |
+   = note: out-of-bounds pointer arithmetic: allocN has size 0, so pointer to 1 byte starting at offset 0 is out-of-bounds
+   |
+note: inside `ptr::const_ptr::<impl *const u8>::offset`
+  --> $SRC_DIR/core/src/ptr/const_ptr.rs:LL:COL
+note: inside `ZERO_SIZED_ALLOC`
+  --> $DIR/offset_ub.rs:17:50
+   |
+LL | pub const ZERO_SIZED_ALLOC: *const u8 = unsafe { [0u8; 0].as_ptr().offset(1) };
+   |                                                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^
+
+error[E0080]: evaluation of constant value failed
+  --> $SRC_DIR/core/src/ptr/mut_ptr.rs:LL:COL
+   |
+   = note: out-of-bounds pointer arithmetic: 0x1[noalloc] is a dangling pointer (it has no provenance)
+   |
+note: inside `ptr::mut_ptr::<impl *mut u8>::offset`
+  --> $SRC_DIR/core/src/ptr/mut_ptr.rs:LL:COL
+note: inside `DANGLING`
+  --> $DIR/offset_ub.rs:18:42
+   |
+LL | pub const DANGLING: *const u8 = unsafe { ptr::NonNull::<u8>::dangling().as_ptr().offset(4) };
+   |                                          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+
+error[E0080]: evaluation of constant value failed
+  --> $SRC_DIR/core/src/ptr/const_ptr.rs:LL:COL
+   |
+   = note: out-of-bounds pointer arithmetic: null pointer is a dangling pointer (it has no provenance)
+   |
+note: inside `ptr::const_ptr::<impl *const u8>::offset`
+  --> $SRC_DIR/core/src/ptr/const_ptr.rs:LL:COL
+note: inside `NULL_OFFSET_ZERO`
+  --> $DIR/offset_ub.rs:21:50
+   |
+LL | pub const NULL_OFFSET_ZERO: *const u8 = unsafe { ptr::null::<u8>().offset(0) };
+   |                                                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^
+
+error[E0080]: evaluation of constant value failed
+  --> $SRC_DIR/core/src/ptr/const_ptr.rs:LL:COL
+   |
+   = note: out-of-bounds pointer arithmetic: 0x7f..f[noalloc] is a dangling pointer (it has no provenance)
+   |
+note: inside `ptr::const_ptr::<impl *const u8>::offset`
+  --> $SRC_DIR/core/src/ptr/const_ptr.rs:LL:COL
+note: inside `UNDERFLOW_ABS`
+  --> $DIR/offset_ub.rs:24:47
+   |
+LL | pub const UNDERFLOW_ABS: *const u8 = unsafe { (usize::MAX as *const u8).offset(isize::MIN) };
+   |                                               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+
+error: aborting due to 12 previous errors
+
+For more information about this error, try `rustc --explain E0080`.