From 7fb3e5921c882041bf7df04c66b1809b7ed5c933 Mon Sep 17 00:00:00 2001
From: Paul Dicker <paul@pitdicker.nl>
Date: Sun, 23 Apr 2023 22:45:59 +0200
Subject: [PATCH] Just rely on the standard library for Local::now

---
 src/offset/local/mod.rs     |  5 +++--
 src/offset/local/stub.rs    | 11 -----------
 src/offset/local/unix.rs    |  7 +------
 src/offset/local/windows.rs | 15 ---------------
 4 files changed, 4 insertions(+), 34 deletions(-)

diff --git a/src/offset/local/mod.rs b/src/offset/local/mod.rs
index 1adddb7d60..74aa902b57 100644
--- a/src/offset/local/mod.rs
+++ b/src/offset/local/mod.rs
@@ -10,7 +10,8 @@ use super::fixed::FixedOffset;
 use super::{LocalResult, TimeZone};
 use crate::naive::{NaiveDate, NaiveDateTime};
 #[allow(deprecated)]
-use crate::{Date, DateTime};
+use crate::Date;
+use crate::{DateTime, Utc};
 
 // we don't want `stub.rs` when the target_os is not wasi or emscripten
 // as we use js-sys to get the date instead
@@ -74,7 +75,7 @@ impl Local {
     )))]
     #[must_use]
     pub fn now() -> DateTime<Local> {
-        inner::now()
+        Utc::now().with_timezone(&Local)
     }
 
     /// Returns a `DateTime` which corresponds to the current date and time.
diff --git a/src/offset/local/stub.rs b/src/offset/local/stub.rs
index 9ececd3c22..3b42717d82 100644
--- a/src/offset/local/stub.rs
+++ b/src/offset/local/stub.rs
@@ -13,10 +13,6 @@ use std::time::{SystemTime, UNIX_EPOCH};
 use super::{FixedOffset, Local};
 use crate::{DateTime, Datelike, LocalResult, NaiveDate, NaiveDateTime, NaiveTime, Timelike};
 
-pub(super) fn now() -> DateTime<Local> {
-    tm_to_datetime(Timespec::now().local())
-}
-
 /// Converts a local `NaiveDateTime` to the `time::Timespec`.
 #[cfg(not(all(
     target_arch = "wasm32",
@@ -92,13 +88,6 @@ struct Timespec {
 }
 
 impl Timespec {
-    /// Constructs a timespec representing the current time in UTC.
-    fn now() -> Timespec {
-        let st =
-            SystemTime::now().duration_since(UNIX_EPOCH).expect("system time before Unix epoch");
-        Timespec { sec: st.as_secs() as i64, nsec: st.subsec_nanos() as i32 }
-    }
-
     /// Converts this timespec into the system's local time.
     fn local(self) -> Tm {
         let mut tm = Tm {
diff --git a/src/offset/local/unix.rs b/src/offset/local/unix.rs
index 68b206cd90..d933cfb1d6 100644
--- a/src/offset/local/unix.rs
+++ b/src/offset/local/unix.rs
@@ -12,12 +12,7 @@ use std::{cell::RefCell, collections::hash_map, env, fs, hash::Hasher, time::Sys
 
 use super::tz_info::TimeZone;
 use super::{DateTime, FixedOffset, Local, NaiveDateTime};
-use crate::{Datelike, LocalResult, Utc};
-
-pub(super) fn now() -> DateTime<Local> {
-    let now = Utc::now().naive_utc();
-    naive_to_local(&now, false).unwrap()
-}
+use crate::{Datelike, LocalResult};
 
 pub(super) fn naive_to_local(d: &NaiveDateTime, local: bool) -> LocalResult<DateTime<Local>> {
     TZ_INFO.with(|maybe_cache| {
diff --git a/src/offset/local/windows.rs b/src/offset/local/windows.rs
index 6475929fe4..455a707839 100644
--- a/src/offset/local/windows.rs
+++ b/src/offset/local/windows.rs
@@ -15,7 +15,6 @@ use std::result::Result;
 
 use winapi::shared::minwindef::FILETIME;
 use winapi::um::minwinbase::SYSTEMTIME;
-use winapi::um::sysinfoapi::GetLocalTime;
 use winapi::um::timezoneapi::{
     SystemTimeToFileTime, SystemTimeToTzSpecificLocalTime, TzSpecificLocalTimeToSystemTime,
 };
@@ -40,10 +39,6 @@ macro_rules! windows_sys_call {
 const HECTONANOSECS_IN_SEC: i64 = 10_000_000;
 const HECTONANOSEC_TO_UNIX_EPOCH: i64 = 11_644_473_600 * HECTONANOSECS_IN_SEC;
 
-pub(super) fn now() -> DateTime<Local> {
-    LocalSysTime::local().datetime()
-}
-
 /// Converts a local `NaiveDateTime` to the `time::Timespec`.
 pub(super) fn naive_to_local(d: &NaiveDateTime, local: bool) -> LocalResult<DateTime<Local>> {
     let naive_sys_time = system_time_from_naive_date_time(d);
@@ -65,16 +60,6 @@ struct LocalSysTime {
 }
 
 impl LocalSysTime {
-    fn local() -> Self {
-        let mut now = MaybeUninit::<SYSTEMTIME>::uninit();
-        unsafe { GetLocalTime(now.as_mut_ptr()) }
-        // SAFETY: GetLocalTime cannot fail according to spec, so we can assume the value
-        // is initialized.
-        let st = unsafe { now.assume_init() };
-
-        Self::from_local_time(st).expect("Current local time must exist")
-    }
-
     fn from_utc_time(utc_time: SYSTEMTIME) -> Result<Self, Error> {
         let local_time = utc_to_local_time(&utc_time)?;
         let utc_secs = system_time_as_unix_seconds(&utc_time)?;