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error[E0080]: memory access failed: attempting to access 1 byte, but got null pointer
--> $DIR/const-compare-bytes-ub.rs:9:9
|
LL | compare_bytes(0 as *const u8, 2 as *const u8, 1)
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ evaluation of `main::LHS_NULL` failed here
error[E0080]: memory access failed: attempting to access 1 byte, but got 0x1[noalloc] which is a dangling pointer (it has no provenance)
--> $DIR/const-compare-bytes-ub.rs:13:9
|
LL | compare_bytes(1 as *const u8, 0 as *const u8, 1)
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ evaluation of `main::RHS_NULL` failed here
error[E0080]: memory access failed: attempting to access 1 byte, but got 0x1[noalloc] which is a dangling pointer (it has no provenance)
--> $DIR/const-compare-bytes-ub.rs:17:9
|
LL | compare_bytes(1 as *const u8, 2 as *const u8, 1)
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ evaluation of `main::DANGLING_PTR_NON_ZERO_LENGTH` failed here
error[E0080]: memory access failed: attempting to access 4 bytes, but got ALLOC0 which is only 3 bytes from the end of the allocation
--> $DIR/const-compare-bytes-ub.rs:21:9
|
LL | compare_bytes([1, 2, 3].as_ptr(), [1, 2, 3, 4].as_ptr(), 4)
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ evaluation of `main::LHS_OUT_OF_BOUNDS` failed here
error[E0080]: memory access failed: attempting to access 4 bytes, but got ALLOC1 which is only 3 bytes from the end of the allocation
--> $DIR/const-compare-bytes-ub.rs:25:9
|
LL | compare_bytes([1, 2, 3, 4].as_ptr(), [1, 2, 3].as_ptr(), 4)
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ evaluation of `main::RHS_OUT_OF_BOUNDS` failed here
error[E0080]: reading memory at ALLOC2[0x0..0x1], but memory is uninitialized at [0x0..0x1], and this operation requires initialized memory
--> $DIR/const-compare-bytes-ub.rs:29:9
|
LL | compare_bytes(MaybeUninit::uninit().as_ptr(), [1].as_ptr(), 1)
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ evaluation of `main::LHS_UNINIT` failed here
error[E0080]: reading memory at ALLOC3[0x0..0x1], but memory is uninitialized at [0x0..0x1], and this operation requires initialized memory
--> $DIR/const-compare-bytes-ub.rs:33:9
|
LL | compare_bytes([1].as_ptr(), MaybeUninit::uninit().as_ptr(), 1)
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ evaluation of `main::RHS_UNINIT` failed here
error[E0080]: unable to turn pointer into integer
--> $DIR/const-compare-bytes-ub.rs:37:9
|
LL | compare_bytes([&1].as_ptr().cast(), [&2].as_ptr().cast(), std::mem::size_of::<usize>())
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ evaluation of `main::WITH_PROVENANCE` failed here
|
= 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`.
|
