| warning: sharing memory with a native function called via FFI |
| --> tests/native-lib/pass/ptr_write_access.rs:LL:CC |
| | |
| LL | unsafe { increment_int(&mut x) }; |
| | ^^^^^^^^^^^^^^^^^^^^^ sharing memory with a native function |
| | |
| = help: when memory is shared with a native function call, Miri stops tracking initialization and provenance for that memory |
| = help: in particular, Miri assumes that the native call initializes all memory it has access to |
| = help: Miri also assumes that any part of this memory may be a pointer that is permitted to point to arbitrary exposed memory |
| = help: what this means is that Miri will easily miss Undefined Behavior related to incorrect usage of this shared memory, so you should not take a clean Miri run as a signal that your FFI code is UB-free |
| = note: stack backtrace: |
| 0: test_increment_int |
| at tests/native-lib/pass/ptr_write_access.rs:LL:CC |
| 1: main |
| at tests/native-lib/pass/ptr_write_access.rs:LL:CC |
| |
