POINTER_ALIGNMENT not applied to Rust structs

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#60 6 comments 0 reactions 1 assignee View on GitHub

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Since Jan 22, 2024.

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Description

bug
Summary

POINTER_ALIGNMENT is not applied to the rust structs for example.

pub struct IO_STACK_LOCATION_0_4 {
    pub OutputBufferLength: u32,
    pub InputBufferLength: u32,
    pub IoControlCode: u32,
    pub Type3InputBuffer: *mut ::core::ffi::c_void,
}

file: libs/sys/src/Windows/Wdk/Foundation/mod.rs

This struct has length 24 bytes in rust. But the C version has more padding with the InputBufferLength and IoControlCode

struct {
    ULONG OutputBufferLength;
    ULONG POINTER_ALIGNMENT InputBufferLength;
    ULONG POINTER_ALIGNMENT IoControlCode;
    PVOID Type3InputBuffer;
} DeviceIoControl;

file: C:\Program Files (x86)\Windows Kits\10\Include\10.0.22621.0\km\wdm.h

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