mirror of
https://github.com/rust-lang/rust.git
synced 2024-11-30 10:45:18 +00:00
55 lines
3.1 KiB
Plaintext
55 lines
3.1 KiB
Plaintext
error[E0080]: evaluation of constant value failed
|
|
--> $DIR/const-compare-bytes-ub.rs:10:9
|
|
|
|
|
LL | compare_bytes(0 as *const u8, 2 as *const u8, 1)
|
|
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ memory access failed: expected a pointer to 1 byte of memory, but got a null pointer
|
|
|
|
error[E0080]: evaluation of constant value failed
|
|
--> $DIR/const-compare-bytes-ub.rs:14:9
|
|
|
|
|
LL | compare_bytes(1 as *const u8, 0 as *const u8, 1)
|
|
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ memory access failed: expected a pointer to 1 byte of memory, but got 0x1[noalloc] which is a dangling pointer (it has no provenance)
|
|
|
|
error[E0080]: evaluation of constant value failed
|
|
--> $DIR/const-compare-bytes-ub.rs:18:9
|
|
|
|
|
LL | compare_bytes(1 as *const u8, 2 as *const u8, 1)
|
|
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ memory access failed: expected a pointer to 1 byte of memory, but got 0x1[noalloc] which is a dangling pointer (it has no provenance)
|
|
|
|
error[E0080]: evaluation of constant value failed
|
|
--> $DIR/const-compare-bytes-ub.rs:22:9
|
|
|
|
|
LL | compare_bytes([1, 2, 3].as_ptr(), [1, 2, 3, 4].as_ptr(), 4)
|
|
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ memory access failed: expected a pointer to 4 bytes of memory, but got ALLOC0 which is only 3 bytes from the end of the allocation
|
|
|
|
error[E0080]: evaluation of constant value failed
|
|
--> $DIR/const-compare-bytes-ub.rs:26:9
|
|
|
|
|
LL | compare_bytes([1, 2, 3, 4].as_ptr(), [1, 2, 3].as_ptr(), 4)
|
|
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ memory access failed: expected a pointer to 4 bytes of memory, but got ALLOC1 which is only 3 bytes from the end of the allocation
|
|
|
|
error[E0080]: evaluation of constant value failed
|
|
--> $DIR/const-compare-bytes-ub.rs:30:9
|
|
|
|
|
LL | compare_bytes(MaybeUninit::uninit().as_ptr(), [1].as_ptr(), 1)
|
|
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ reading memory at ALLOC2[0x0..0x1], but memory is uninitialized at [0x0..0x1], and this operation requires initialized memory
|
|
|
|
error[E0080]: evaluation of constant value failed
|
|
--> $DIR/const-compare-bytes-ub.rs:34:9
|
|
|
|
|
LL | compare_bytes([1].as_ptr(), MaybeUninit::uninit().as_ptr(), 1)
|
|
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ reading memory at ALLOC3[0x0..0x1], but memory is uninitialized at [0x0..0x1], and this operation requires initialized memory
|
|
|
|
error[E0080]: evaluation of constant value failed
|
|
--> $DIR/const-compare-bytes-ub.rs:38:9
|
|
|
|
|
LL | compare_bytes([&1].as_ptr().cast(), [&2].as_ptr().cast(), std::mem::size_of::<usize>())
|
|
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ unable to turn pointer into integer
|
|
|
|
|
= help: this code performed an operation that depends on the underlying bytes representing a pointer
|
|
= help: the absolute address of a pointer is not known at compile-time, so such operations are not supported
|
|
|
|
error: aborting due to 8 previous errors
|
|
|
|
For more information about this error, try `rustc --explain E0080`.
|