36 lines
1.9 KiB
Plaintext
36 lines
1.9 KiB
Plaintext
warning: pointer-to-integer cast
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--> $DIR/ptr_offset_0_plus_0.rs:LL:CC
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LL | let x = 0 as *mut i32;
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| ^^^^^^^^^^^^^ pointer-to-integer cast
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= help: this program is using integer-to-pointer casts or (equivalently) `from_exposed_addr`,
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= help: which means that Miri might miss pointer bugs in this program
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= help: see https://doc.rust-lang.org/nightly/std/ptr/fn.from_exposed_addr.html for more details on that operation
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= help: to ensure that Miri does not miss bugs in your program, use `with_addr` (https://doc.rust-lang.org/nightly/std/ptr/index.html#strict-provenance) instead
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= help: you can then pass the `-Zmiri-strict-provenance` flag to Miri, to ensure you are not relying on `from_exposed_addr` semantics
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= help: alternatively, the `-Zmiri-permissive-provenance` flag disables this warning
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= note: inside `main` at $DIR/ptr_offset_0_plus_0.rs:LL:CC
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error: Undefined Behavior: pointer arithmetic failed: null pointer is not a valid pointer
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--> RUSTLIB/core/src/ptr/mut_ptr.rs:LL:CC
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LL | unsafe { intrinsics::offset(self, count) as *mut T }
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| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ pointer arithmetic failed: null pointer is not a valid pointer
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= help: this indicates a bug in the program: it performed an invalid operation, and caused Undefined Behavior
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= help: see https://doc.rust-lang.org/nightly/reference/behavior-considered-undefined.html for further information
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= note: inside `std::ptr::mut_ptr::<impl *mut i32>::offset` at RUSTLIB/core/src/ptr/mut_ptr.rs:LL:CC
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note: inside `main` at $DIR/ptr_offset_0_plus_0.rs:LL:CC
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--> $DIR/ptr_offset_0_plus_0.rs:LL:CC
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LL | let _x = unsafe { x.offset(0) }; // UB despite offset 0, NULL is never inbounds
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| ^^^^^^^^^^^
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note: some details are omitted, run with `MIRIFLAGS=-Zmiri-backtrace=full` for a verbose backtrace
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error: aborting due to previous error; 1 warning emitted
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