Scott McMurray b2c717fa33 MaybeUninit::assume_init_read should have noundef load metadata ... I was looking into `array::IntoIter` optimization, and noticed that it wasn't annotating the loads with `noundef` for simple things like `array::IntoIter<i32, N>`. Turned out to be a more general problem as `MaybeUninit::assume_init_read` isn't marking the load as initialized (<https://rust.godbolt.org/z/Mxd8TPTnv>), which is unfortunate since that's basically its reason to exist. This PR lowers `ptr::read(p)` to `copy *p` in MIR, which fortuitiously also improves the IR we give to LLVM for things like `mem::replace`.		2023-03-11 17:44:43 -08:00
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allowed_slices.rs
forbidden_slices.rs
forbidden_slices.stderr
out_of_bounds_read.rs
out_of_bounds_read.stderr	MaybeUninit::assume_init_read should have noundef load metadata	2023-03-11 17:44:43 -08:00