revert disabling stdio buffer

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.

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.

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)
-}

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.