--- gcc-8.3.0/libgo/go/syscall/errstr_linux.go	2016-08-06 00:36:33.000000000 +0000
+++ /dev/null	2019-04-08 15:05:18.560000000 +0000
@@ -1,31 +0,0 @@
-// errstr_linux.go -- GNU/Linux specific error strings.
-
-// Copyright 2010 The Go Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
-
-// We use this rather than errstr.go because on GNU/Linux sterror_r
-// returns a pointer to the error message, and may not use buf at all.
-
-package syscall
-
-import "unsafe"
-
-//sysnb	strerror_r(errnum int, b []byte) (errstr *byte)
-//strerror_r(errnum _C_int, b *byte, len Size_t) *byte
-
-func Errstr(errnum int) string {
-	a := make([]byte, 128)
-	p := strerror_r(errnum, a)
-	b := (*[1000]byte)(unsafe.Pointer(p))
-	i := 0
-	for b[i] != 0 {
-		i++
-	}
-	// Lowercase first letter: Bad -> bad, but STREAM -> STREAM.
-	if i > 1 && 'A' <= b[0] && b[0] <= 'Z' && 'a' <= b[1] && b[1] <= 'z' {
-		c := b[0] + 'a' - 'A'
-		return string(c) + string(b[1:i])
-	}
-	return string(b[:i])
-}
--- gcc-8.3.0/libgo/go/syscall/errstr.go.old	2016-08-06 00:36:33.000000000 +0000
+++ gcc-8.3.0/libgo/go/syscall/errstr.go	2019-04-25 05:41:27.915806277 +0000
@@ -4,8 +4,6 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
-// +build !linux
-
 package syscall
 
 //sysnb	strerror_r(errnum int, buf []byte) (err Errno)