From c46ca84122f4e384c94b65a62e337223e24bd141 Mon Sep 17 00:00:00 2001
From: Haolan <hello@liuxi.ng>
Date: Thu, 13 Nov 2025 11:31:27 +0800
Subject: [PATCH] revert disabling stdio buffer

---
 runtime/internal/clite/pthread/pthread_gc.go   |  3 ++-
 runtime/internal/clite/pthread/pthread_nogc.go |  3 ++-
 runtime/internal/clite/stdio_baremetal.go      | 13 -------------
 runtime/internal/clite/stdio_darwin.go         |  3 ++-
 4 files changed, 6 insertions(+), 16 deletions(-)

diff --git a/runtime/internal/clite/pthread/pthread_gc.go b/runtime/internal/clite/pthread/pthread_gc.go
index 4d33b5a2..32c7823e 100644
--- a/runtime/internal/clite/pthread/pthread_gc.go
+++ b/runtime/internal/clite/pthread/pthread_gc.go
@@ -1,4 +1,5 @@
-//go:build !nogc && !baremetal
+//go:build !nogc
+// +build !nogc
 
 /*
  * Copyright (c) 2024 The GoPlus Authors (goplus.org). All rights reserved.
diff --git a/runtime/internal/clite/pthread/pthread_nogc.go b/runtime/internal/clite/pthread/pthread_nogc.go
index 09acb0ac..594e1b97 100644
--- a/runtime/internal/clite/pthread/pthread_nogc.go
+++ b/runtime/internal/clite/pthread/pthread_nogc.go
@@ -1,4 +1,5 @@
-//go:build nogc || baremetal
+//go:build nogc
+// +build nogc
 
 /*
  * Copyright (c) 2024 The GoPlus Authors (goplus.org). All rights reserved.
diff --git a/runtime/internal/clite/stdio_baremetal.go b/runtime/internal/clite/stdio_baremetal.go
index f318c065..cd9a649e 100644
--- a/runtime/internal/clite/stdio_baremetal.go
+++ b/runtime/internal/clite/stdio_baremetal.go
@@ -25,16 +25,3 @@ import (
 var Stdin FilePtr = Fopen(Str("/dev/stdin"), Str("r"))
 var Stdout FilePtr = Fopen(Str("/dev/stdout"), Str("w"))
 var Stderr FilePtr = Stdout
-
-//go:linkname setvbuf C.setvbuf
-func setvbuf(fp FilePtr, buf *Char, typ Int, size SizeT)
-
-const (
-	_IONBF = 2 // No buffering - immediate output
-)
-
-func init() {
-	// Disable buffering for baremetal targets to ensure immediate output
-	setvbuf(Stdout, nil, _IONBF, 0)
-	setvbuf(Stdin, nil, _IONBF, 0)
-}
diff --git a/runtime/internal/clite/stdio_darwin.go b/runtime/internal/clite/stdio_darwin.go
index cd30c073..324403f5 100644
--- a/runtime/internal/clite/stdio_darwin.go
+++ b/runtime/internal/clite/stdio_darwin.go
@@ -1,4 +1,5 @@
-//go:build darwin && !baremetal
+//go:build darwin
+// +build darwin
 
 /*
  * Copyright (c) 2024 The GoPlus Authors (goplus.org). All rights reserved.