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Rust soundness fixes (#7518)

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* Rust soundness fixes

* Second pass

* Make init_from_table unsafe

* Remove SafeSliceAccess

* Clippy

* Remove create_vector_of_strings

* More clippy

* Remove deprecated root type accessors

* More soundness fixes

* Fix EndianScalar for bool

* Add TriviallyTransmutable

* Add debug assertions

* Review comments

* Review feedback
This commit is contained in:
Raphael Taylor-Davies
2022-09-29 14:58:49 +01:00
committed by GitHub
parent dadbff5714
commit 374f8fb5fb
102 changed files with 2673 additions and 2035 deletions
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40
tests/private_annotation_test/object_generated.rs
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@@ -27,39 +27,25 @@ impl core::fmt::Debug for Object {
}
impl flatbuffers::SimpleToVerifyInSlice for Object {}
impl flatbuffers::SafeSliceAccess for Object {}
impl<'a> flatbuffers::Follow<'a> for Object {
type Inner = &'a Object;
#[inline]
fn follow(buf: &'a [u8], loc: usize) -> Self::Inner {
unsafe fn follow(buf: &'a [u8], loc: usize) -> Self::Inner {
<&'a Object>::follow(buf, loc)
}
}
impl<'a> flatbuffers::Follow<'a> for &'a Object {
type Inner = &'a Object;
#[inline]
fn follow(buf: &'a [u8], loc: usize) -> Self::Inner {
unsafe fn follow(buf: &'a [u8], loc: usize) -> Self::Inner {
flatbuffers::follow_cast_ref::<Object>(buf, loc)
}
}
impl<'b> flatbuffers::Push for Object {
type Output = Object;
#[inline]
fn push(&self, dst: &mut [u8], _rest: &[u8]) {
let src = unsafe {
::core::slice::from_raw_parts(self as *const Object as *const u8, Self::size())
};
dst.copy_from_slice(src);
}
}
impl<'b> flatbuffers::Push for &'b Object {
type Output = Object;
#[inline]
fn push(&self, dst: &mut [u8], _rest: &[u8]) {
let src = unsafe {
::core::slice::from_raw_parts(*self as *const Object as *const u8, Self::size())
};
unsafe fn push(&self, dst: &mut [u8], _written_len: usize) {
let src = ::core::slice::from_raw_parts(self as *const Object as *const u8, Self::size());
dst.copy_from_slice(src);
}
}
@@ -89,24 +75,30 @@ impl<'a> Object {
}
pub fn value(&self) -> i32 {
let mut mem = core::mem::MaybeUninit::<i32>::uninit();
unsafe {
let mut mem = core::mem::MaybeUninit::<<i32 as EndianScalar>::Scalar>::uninit();
// Safety:
// Created from a valid Table for this object
// Which contains a valid value in this slot
EndianScalar::from_little_endian(unsafe {
core::ptr::copy_nonoverlapping(
self.0[0..].as_ptr(),
mem.as_mut_ptr() as *mut u8,
core::mem::size_of::<i32>(),
core::mem::size_of::<<i32 as EndianScalar>::Scalar>(),
);
mem.assume_init()
}.from_little_endian()
})
}
pub fn set_value(&mut self, x: i32) {
let x_le = x.to_little_endian();
// Safety:
// Created from a valid Table for this object
// Which contains a valid value in this slot
unsafe {
core::ptr::copy_nonoverlapping(
&x_le as *const i32 as *const u8,
&x_le as *const _ as *const u8,
self.0[0..].as_mut_ptr(),
core::mem::size_of::<i32>(),
core::mem::size_of::<<i32 as EndianScalar>::Scalar>(),
);
}
}