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Suppress cast_ptr_alignment clippy errors.

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These are only used in places that use `write_unaligned`, so it's ok
that the pointer might be misaligned.
This commit is contained in:
Dan Gohman
2018-04-17 16:02:10 -07:00
parent 58380f38e8
commit 5c6cb202d8
2 changed files with 8 additions and 0 deletions
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3
lib/codegen/src/binemit/memorysink.rs
View File

@@ -84,6 +84,7 @@ impl<'a> CodeSink for MemoryCodeSink<'a> {
fn put2(&mut self, x: u16) { fn put2(&mut self, x: u16) {
unsafe { unsafe {
#[cfg_attr(feature = "cargo-clippy", allow(cast_ptr_alignment))]
write_unaligned(self.data.offset(self.offset) as *mut u16, x); write_unaligned(self.data.offset(self.offset) as *mut u16, x);
} }
self.offset += 2; self.offset += 2;
@@ -91,6 +92,7 @@ impl<'a> CodeSink for MemoryCodeSink<'a> {
fn put4(&mut self, x: u32) { fn put4(&mut self, x: u32) {
unsafe { unsafe {
#[cfg_attr(feature = "cargo-clippy", allow(cast_ptr_alignment))]
write_unaligned(self.data.offset(self.offset) as *mut u32, x); write_unaligned(self.data.offset(self.offset) as *mut u32, x);
} }
self.offset += 4; self.offset += 4;
@@ -98,6 +100,7 @@ impl<'a> CodeSink for MemoryCodeSink<'a> {
fn put8(&mut self, x: u64) { fn put8(&mut self, x: u64) {
unsafe { unsafe {
#[cfg_attr(feature = "cargo-clippy", allow(cast_ptr_alignment))]
write_unaligned(self.data.offset(self.offset) as *mut u64, x); write_unaligned(self.data.offset(self.offset) as *mut u64, x);
} }
self.offset += 8; self.offset += 8;

5
lib/simplejit/src/backend.rs
View File

@@ -238,14 +238,17 @@ impl<'simple_jit_backend> Backend for SimpleJITBackend {
match reloc { match reloc {
Reloc::Abs4 => { Reloc::Abs4 => {
// TODO: Handle overflow. // TODO: Handle overflow.
#[cfg_attr(feature = "cargo-clippy", allow(cast_ptr_alignment))]
unsafe { write_unaligned(at as *mut u32, what as u32) }; unsafe { write_unaligned(at as *mut u32, what as u32) };
} }
Reloc::Abs8 => { Reloc::Abs8 => {
#[cfg_attr(feature = "cargo-clippy", allow(cast_ptr_alignment))]
unsafe { write_unaligned(at as *mut u64, what as u64) }; unsafe { write_unaligned(at as *mut u64, what as u64) };
} }
Reloc::X86PCRel4 => { Reloc::X86PCRel4 => {
// TODO: Handle overflow. // TODO: Handle overflow.
let pcrel = ((what as isize) - (at as isize)) as i32; let pcrel = ((what as isize) - (at as isize)) as i32;
#[cfg_attr(feature = "cargo-clippy", allow(cast_ptr_alignment))]
unsafe { write_unaligned(at as *mut i32, pcrel) }; unsafe { write_unaligned(at as *mut i32, pcrel) };
} }
Reloc::X86GOTPCRel4 | Reloc::X86GOTPCRel4 |
@@ -295,9 +298,11 @@ impl<'simple_jit_backend> Backend for SimpleJITBackend {
match reloc { match reloc {
Reloc::Abs4 => { Reloc::Abs4 => {
// TODO: Handle overflow. // TODO: Handle overflow.
#[cfg_attr(feature = "cargo-clippy", allow(cast_ptr_alignment))]
unsafe { write_unaligned(at as *mut u32, what as u32) }; unsafe { write_unaligned(at as *mut u32, what as u32) };
} }
Reloc::Abs8 => { Reloc::Abs8 => {
#[cfg_attr(feature = "cargo-clippy", allow(cast_ptr_alignment))]
unsafe { write_unaligned(at as *mut u64, what as u64) }; unsafe { write_unaligned(at as *mut u64, what as u64) };
} }
Reloc::X86PCRel4 | Reloc::X86PCRel4 |