diff options
Diffstat (limited to 'tests/ui/consts/const-eval/ub-ref-ptr.stderr')
| -rw-r--r-- | tests/ui/consts/const-eval/ub-ref-ptr.stderr | 67 |
1 files changed, 50 insertions, 17 deletions
diff --git a/tests/ui/consts/const-eval/ub-ref-ptr.stderr b/tests/ui/consts/const-eval/ub-ref-ptr.stderr index c45f66c2925..349a98f11be 100644 --- a/tests/ui/consts/const-eval/ub-ref-ptr.stderr +++ b/tests/ui/consts/const-eval/ub-ref-ptr.stderr @@ -42,8 +42,19 @@ LL | const NULL_BOX: Box<u16> = unsafe { mem::transmute(0usize) }; HEX_DUMP } +error[E0080]: constructing invalid value: encountered a maybe-null box + --> $DIR/ub-ref-ptr.rs:30:1 + | +LL | const MAYBE_NULL_BOX: Box<()> = unsafe { mem::transmute({ + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ it is undefined behavior to use this value + | + = note: the rules on what exactly is undefined behavior aren't clear, so this check might be overzealous. Please open an issue on the rustc repository if you believe it should not be considered undefined behavior. + = note: the raw bytes of the constant (size: $SIZE, align: $ALIGN) { + HEX_DUMP + } + error[E0080]: unable to turn pointer into integer - --> $DIR/ub-ref-ptr.rs:34:1 + --> $DIR/ub-ref-ptr.rs:39:1 | LL | const REF_AS_USIZE: usize = unsafe { mem::transmute(&0) }; | ^^^^^^^^^^^^^^^^^^^^^^^^^ evaluation of `REF_AS_USIZE` failed here @@ -52,7 +63,7 @@ LL | const REF_AS_USIZE: usize = unsafe { mem::transmute(&0) }; = help: the absolute address of a pointer is not known at compile-time, so such operations are not supported error[E0080]: unable to turn pointer into integer - --> $DIR/ub-ref-ptr.rs:37:39 + --> $DIR/ub-ref-ptr.rs:42:39 | LL | const REF_AS_USIZE_SLICE: &[usize] = &[unsafe { mem::transmute(&0) }]; | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ evaluation of `REF_AS_USIZE_SLICE` failed here @@ -61,13 +72,13 @@ LL | const REF_AS_USIZE_SLICE: &[usize] = &[unsafe { mem::transmute(&0) }]; = help: the absolute address of a pointer is not known at compile-time, so such operations are not supported note: erroneous constant encountered - --> $DIR/ub-ref-ptr.rs:37:38 + --> $DIR/ub-ref-ptr.rs:42:38 | LL | const REF_AS_USIZE_SLICE: &[usize] = &[unsafe { mem::transmute(&0) }]; | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ error[E0080]: unable to turn pointer into integer - --> $DIR/ub-ref-ptr.rs:40:86 + --> $DIR/ub-ref-ptr.rs:45:86 | LL | const REF_AS_USIZE_BOX_SLICE: Box<[usize]> = unsafe { mem::transmute::<&[usize], _>(&[mem::transmute(&0)]) }; | ^^^^^^^^^^^^^^^^^^^^ evaluation of `REF_AS_USIZE_BOX_SLICE` failed here @@ -76,13 +87,13 @@ LL | const REF_AS_USIZE_BOX_SLICE: Box<[usize]> = unsafe { mem::transmute::<&[us = help: the absolute address of a pointer is not known at compile-time, so such operations are not supported note: erroneous constant encountered - --> $DIR/ub-ref-ptr.rs:40:85 + --> $DIR/ub-ref-ptr.rs:45:85 | LL | const REF_AS_USIZE_BOX_SLICE: Box<[usize]> = unsafe { mem::transmute::<&[usize], _>(&[mem::transmute(&0)]) }; | ^^^^^^^^^^^^^^^^^^^^^ error[E0080]: constructing invalid value: encountered a dangling reference (0x539[noalloc] has no provenance) - --> $DIR/ub-ref-ptr.rs:43:1 + --> $DIR/ub-ref-ptr.rs:48:1 | LL | const USIZE_AS_REF: &'static u8 = unsafe { mem::transmute(1337usize) }; | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ it is undefined behavior to use this value @@ -93,7 +104,7 @@ LL | const USIZE_AS_REF: &'static u8 = unsafe { mem::transmute(1337usize) }; } error[E0080]: constructing invalid value: encountered a dangling box (0x539[noalloc] has no provenance) - --> $DIR/ub-ref-ptr.rs:46:1 + --> $DIR/ub-ref-ptr.rs:51:1 | LL | const USIZE_AS_BOX: Box<u8> = unsafe { mem::transmute(1337usize) }; | ^^^^^^^^^^^^^^^^^^^^^^^^^^^ it is undefined behavior to use this value @@ -103,8 +114,8 @@ LL | const USIZE_AS_BOX: Box<u8> = unsafe { mem::transmute(1337usize) }; HEX_DUMP } -error[E0080]: reading memory at ALLOC3[0x%..0x%], but memory is uninitialized at [0x%..0x%], and this operation requires initialized memory - --> $DIR/ub-ref-ptr.rs:49:41 +error[E0080]: reading memory at ALLOC6[0x%..0x%], but memory is uninitialized at [0x%..0x%], and this operation requires initialized memory + --> $DIR/ub-ref-ptr.rs:54:41 | LL | const UNINIT_PTR: *const i32 = unsafe { MaybeUninit { uninit: () }.init }; | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ evaluation of `UNINIT_PTR` failed here @@ -114,7 +125,7 @@ LL | const UNINIT_PTR: *const i32 = unsafe { MaybeUninit { uninit: () }.init }; } error[E0080]: constructing invalid value: encountered null pointer, but expected a function pointer - --> $DIR/ub-ref-ptr.rs:52:1 + --> $DIR/ub-ref-ptr.rs:57:1 | LL | const NULL_FN_PTR: fn() = unsafe { mem::transmute(0usize) }; | ^^^^^^^^^^^^^^^^^^^^^^^ it is undefined behavior to use this value @@ -124,8 +135,8 @@ LL | const NULL_FN_PTR: fn() = unsafe { mem::transmute(0usize) }; HEX_DUMP } -error[E0080]: reading memory at ALLOC4[0x%..0x%], but memory is uninitialized at [0x%..0x%], and this operation requires initialized memory - --> $DIR/ub-ref-ptr.rs:54:38 +error[E0080]: reading memory at ALLOC7[0x%..0x%], but memory is uninitialized at [0x%..0x%], and this operation requires initialized memory + --> $DIR/ub-ref-ptr.rs:59:38 | LL | const UNINIT_FN_PTR: fn() = unsafe { MaybeUninit { uninit: () }.init }; | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ evaluation of `UNINIT_FN_PTR` failed here @@ -135,7 +146,7 @@ LL | const UNINIT_FN_PTR: fn() = unsafe { MaybeUninit { uninit: () }.init }; } error[E0080]: constructing invalid value: encountered 0xd[noalloc], but expected a function pointer - --> $DIR/ub-ref-ptr.rs:56:1 + --> $DIR/ub-ref-ptr.rs:61:1 | LL | const DANGLING_FN_PTR: fn() = unsafe { mem::transmute(13usize) }; | ^^^^^^^^^^^^^^^^^^^^^^^^^^^ it is undefined behavior to use this value @@ -145,8 +156,8 @@ LL | const DANGLING_FN_PTR: fn() = unsafe { mem::transmute(13usize) }; HEX_DUMP } -error[E0080]: constructing invalid value: encountered ALLOC2<imm>, but expected a function pointer - --> $DIR/ub-ref-ptr.rs:58:1 +error[E0080]: constructing invalid value: encountered ALLOC3<imm>, but expected a function pointer + --> $DIR/ub-ref-ptr.rs:63:1 | LL | const DATA_FN_PTR: fn() = unsafe { mem::transmute(&13) }; | ^^^^^^^^^^^^^^^^^^^^^^^ it is undefined behavior to use this value @@ -156,12 +167,34 @@ LL | const DATA_FN_PTR: fn() = unsafe { mem::transmute(&13) }; HEX_DUMP } +error[E0080]: constructing invalid value: encountered ALLOC4+0xa, but expected a function pointer + --> $DIR/ub-ref-ptr.rs:65:1 + | +LL | const MAYBE_NULL_FN_PTR: fn() = unsafe { mem::transmute({ + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ it is undefined behavior to use this value + | + = note: the rules on what exactly is undefined behavior aren't clear, so this check might be overzealous. Please open an issue on the rustc repository if you believe it should not be considered undefined behavior. + = note: the raw bytes of the constant (size: $SIZE, align: $ALIGN) { + HEX_DUMP + } + error[E0080]: accessing memory based on pointer with alignment 1, but alignment 4 is required - --> $DIR/ub-ref-ptr.rs:65:5 + --> $DIR/ub-ref-ptr.rs:75:5 | LL | ptr.read(); | ^^^^^^^^^^ evaluation of `UNALIGNED_READ` failed here -error: aborting due to 15 previous errors +error[E0080]: constructing invalid value: encountered a pointer with unknown absolute address, but expected something that is definitely greater or equal to 1000 + --> $DIR/ub-ref-ptr.rs:84:1 + | +LL | const INVALID_VALUE_PTR: High = unsafe { mem::transmute(&S) }; + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ it is undefined behavior to use this value + | + = note: the rules on what exactly is undefined behavior aren't clear, so this check might be overzealous. Please open an issue on the rustc repository if you believe it should not be considered undefined behavior. + = note: the raw bytes of the constant (size: $SIZE, align: $ALIGN) { + HEX_DUMP + } + +error: aborting due to 18 previous errors For more information about this error, try `rustc --explain E0080`. |