diff options
| -rw-r--r-- | library/std/src/sys/windows/fs.rs | 14 |
1 files changed, 8 insertions, 6 deletions
diff --git a/library/std/src/sys/windows/fs.rs b/library/std/src/sys/windows/fs.rs index 09dfb0caeec..42484543686 100644 --- a/library/std/src/sys/windows/fs.rs +++ b/library/std/src/sys/windows/fs.rs @@ -309,14 +309,16 @@ impl File { && unsafe { c::GetLastError() } == c::ERROR_ALREADY_EXISTS { unsafe { - // Setting the allocation size to zero also sets the - // EOF position to zero. - let alloc = c::FILE_ALLOCATION_INFO { AllocationSize: 0 }; + // This originally used `FileAllocationInfo` instead of + // `FileEndOfFileInfo` but that wasn't supported by WINE. + // It's arguable which fits the semantics of `OpenOptions` + // better so let's just use the more widely supported method. + let eof = c::FILE_END_OF_FILE_INFO { EndOfFile: 0 }; let result = c::SetFileInformationByHandle( handle.as_raw_handle(), - c::FileAllocationInfo, - ptr::addr_of!(alloc).cast::<c_void>(), - mem::size_of::<c::FILE_ALLOCATION_INFO>() as u32, + c::FileEndOfFileInfo, + ptr::addr_of!(eof).cast::<c_void>(), + mem::size_of::<c::FILE_END_OF_FILE_INFO>() as u32, ); if result == 0 { return Err(io::Error::last_os_error()); |