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also test different integers

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This commit is contained in:
Ralf Jung 2019-11-04 13:31:29 +01:00
parent 3c944feb65
commit 21d284b6f0
2 changed files with 27 additions and 1 deletions
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7
src/test/ui/consts/offset_from_ub.rs
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@ -39,4 +39,11 @@ pub const OFFSET_FROM_NULL: isize = {
unsafe { ptr.offset_from(ptr) }
};
pub const DIFFERENT_INT: isize = { // offset_from with two different integers: like DIFFERENT_ALLOC
//~^ NOTE
let ptr1 = 8 as *const u8;
let ptr2 = 16 as *const u8;
unsafe { ptr2.offset_from(ptr1) }
};
fn main() {}

21
src/test/ui/consts/offset_from_ub.stderr
View file

@ -75,5 +75,24 @@ LL | | unsafe { ptr.offset_from(ptr) }
LL | | };
| |__-
error: aborting due to 4 previous errors
error: any use of this value will cause an error
--> $SRC_DIR/libcore/ptr/mod.rs:LL:COL
|
LL | intrinsics::ptr_offset_from(self, origin)
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
| |
| a memory access tried to interpret some bytes as a pointer
| inside call to `std::ptr::<impl *const u8>::offset_from` at $DIR/offset_from_ub.rs:46:14
|
::: $DIR/offset_from_ub.rs:42:1
|
LL | / pub const DIFFERENT_INT: isize = { // offset_from with two different integers: like DIFFERENT_ALLOC
LL | |
LL | | let ptr1 = 8 as *const u8;
LL | | let ptr2 = 16 as *const u8;
LL | | unsafe { ptr2.offset_from(ptr1) }
LL | | };
| |__-
error: aborting due to 5 previous errors