From 61c38d77c66fe707bba41e43e59f2c727cbe7bb7 Mon Sep 17 00:00:00 2001
From: Andrew Kelley <andrew@ziglang.org>
Date: Fri, 4 Apr 2025 15:02:15 -0700
Subject: [PATCH] std.Io: remove `@ptrCast` workarounds

thanks to d53cc5e5b2ac51793ea19a847d8cee409af1dee3
---
 lib/std/Io.zig | 25 +++++--------------------
 1 file changed, 5 insertions(+), 20 deletions(-)

diff --git a/lib/std/Io.zig b/lib/std/Io.zig
index f9d99525e9..dddd86ecff 100644
--- a/lib/std/Io.zig
+++ b/lib/std/Io.zig
@@ -781,24 +781,14 @@ pub fn Future(Result: type) type {
         /// Idempotent.
         pub fn cancel(f: *@This(), io: Io) Result {
             const any_future = f.any_future orelse return f.result;
-            io.vtable.cancel(
-                io.userdata,
-                any_future,
-                if (@sizeOf(Result) == 0) &.{} else @ptrCast((&f.result)[0..1]), // work around compiler bug
-                .of(Result),
-            );
+            io.vtable.cancel(io.userdata, any_future, @ptrCast((&f.result)[0..1]), .of(Result));
             f.any_future = null;
             return f.result;
         }
 
         pub fn await(f: *@This(), io: Io) Result {
             const any_future = f.any_future orelse return f.result;
-            io.vtable.await(
-                io.userdata,
-                any_future,
-                if (@sizeOf(Result) == 0) &.{} else @ptrCast((&f.result)[0..1]), // work around compiler bug
-                .of(Result),
-            );
+            io.vtable.await(io.userdata, any_future, @ptrCast((&f.result)[0..1]), .of(Result));
             f.any_future = null;
             return f.result;
         }
@@ -1162,9 +1152,9 @@ pub fn async(io: Io, function: anytype, args: std.meta.ArgsTuple(@TypeOf(functio
     var future: Future(Result) = undefined;
     future.any_future = io.vtable.async(
         io.userdata,
-        if (@sizeOf(Result) == 0) &.{} else @ptrCast((&future.result)[0..1]), // work around compiler bug
+        @ptrCast((&future.result)[0..1]),
         .of(Result),
-        if (@sizeOf(Args) == 0) &.{} else @ptrCast((&args)[0..1]), // work around compiler bug
+        @ptrCast((&args)[0..1]),
         .of(Args),
         TypeErased.start,
     );
@@ -1181,12 +1171,7 @@ pub fn go(io: Io, function: anytype, args: std.meta.ArgsTuple(@TypeOf(function))
             @call(.auto, function, args_casted.*);
         }
     };
-    io.vtable.go(
-        io.userdata,
-        if (@sizeOf(Args) == 0) &.{} else @ptrCast((&args)[0..1]), // work around compiler bug
-        .of(Args),
-        TypeErased.start,
-    );
+    io.vtable.go(io.userdata, @ptrCast((&args)[0..1]), .of(Args), TypeErased.start);
 }
 
 pub fn now(io: Io, clockid: std.posix.clockid_t) ClockGetTimeError!Timestamp {