bjoernager/rust
bjoernager/rust
1
Fork 0
Code Activity

Usage zero as language id for FormatMessageW()

Browse source
This commit is contained in:
Charles Lew 2023-08-19 14:32:15 +08:00
parent d06ca0ffaf
commit 4504cc513f
1 changed files with 2 additions and 6 deletions
Download patch file Download diff file Expand all files Collapse all files

8
library/std/src/sys/windows/os.rs
View file

@ -25,10 +25,6 @@ pub fn errno() -> i32 {
/// Gets a detailed string description for the given error number.
pub fn error_string(mut errnum: i32) -> String {
// This value is calculated from the macro
// MAKELANGID(LANG_SYSTEM_DEFAULT, SUBLANG_SYS_DEFAULT)
let langId = 0x0800 as c::DWORD;
let mut buf = [0 as c::WCHAR; 2048];
unsafe {
@ -56,13 +52,13 @@ pub fn error_string(mut errnum: i32) -> String {
flags | c::FORMAT_MESSAGE_FROM_SYSTEM | c::FORMAT_MESSAGE_IGNORE_INSERTS,
module,
errnum as c::DWORD,
langId,
0,
buf.as_mut_ptr(),
buf.len() as c::DWORD,
ptr::null(),
) as usize;
if res == 0 {
// Sometimes FormatMessageW can fail e.g., system doesn't like langId,
// Sometimes FormatMessageW can fail e.g., system doesn't like 0 as langId,
let fm_err = errno();
return format!("OS Error {errnum} (FormatMessageW() returned error {fm_err})");
}