Error Testing Miri

[Gerard Zinn]

I am using some unsafe rust in my crate for improve performance and i am getting an error from mimalloc:

Running unittests src/main.rs (target/miri/x86_64-unknown-linux-gnu/debug/deps/intelli-90c2b30ae[563](https://github.com/GPeaky/intelli/actions/runs/7086055819/job/19283534051#step:5:564)c5cb)
error: unsupported operation: can't call foreign function `mi_malloc_aligned` on OS `linux`
  --> /home/runner/.cargo/registry/src/index.crates.io-6f17d22bba15001f/mimalloc-0.1.39/src/lib.rs:46:9
   |
46 |         mi_malloc_aligned(layout.size(), layout.align()) as *mut u8
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ can't call foreign function `mi_malloc_aligned` on OS `linux`
   |
   = help: this is likely not a bug in the program; it indicates that the program performed an operation that the interpreter does not support
   = note: BACKTRACE:
   = note: inside `<mimalloc::MiMalloc as std::alloc::GlobalAlloc>::alloc` at /home/runner/.cargo/registry/src/index.crates.io-6f17d22bba15001f/mimalloc-0.1.39/src/lib.rs:46:9: 46:57
note: inside `_::__rust_alloc`
  --> src/main.rs:12:16
   |
11 | #[global_allocator]
   | ------------------- in this procedural macro expansion
12 | static GLOBAL: MiMalloc = MiMalloc;
   |                ^^^^^^^^
   = note: this error originates in the attribute macro `global_allocator` (in Nightly builds, run with -Z macro-backtrace for more info)

note: some details are omitted, run with `MIRIFLAGS=-Zmiri-backtrace=full` for a verbose backtrace

error: aborting due to 1 previous error```

[nathaniel-daniel]

= help: this is likely not a bug in the program; it indicates that the program performed an operation that the interpreter does not support

Pretty sure MIRI can't do FFI easily.

[Gerard Zinn]

Okay!, just other question is there any possible solution to make miri don't check mimalloc or something?

[nathaniel-daniel]

You probably want to disable mimalloc while running under MIRI.

I think cfg_attr should work. If not, you can just put the global_allocator stuff in a module and feature gate that entire module instead.

[Gerard Zinn]

Thanks!