From dc3ea0f87fca73d0bc7e6936ba76e8c45c97fe7c Mon Sep 17 00:00:00 2001
From: gym603 <smalltalkman@foxmail.com>
Date: Thu, 30 Nov 2023 01:25:41 +0800
Subject: [PATCH] os: flush stdout and stderr before calling _wsystem (on
 windows), as the MSDN doc advices (#20034)

---
 vlib/os/os.c.v | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/vlib/os/os.c.v b/vlib/os/os.c.v
index 0a4db523a2..2c00568d66 100644
--- a/vlib/os/os.c.v
+++ b/vlib/os/os.c.v
@@ -400,6 +400,8 @@ pub fn system(cmd string) int {
 		// overcome bug in system & _wsystem (cmd) when first char is quote `"`
 		wcmd := if cmd.len > 1 && cmd[0] == `"` && cmd[1] != `"` { '"${cmd}"' } else { cmd }
 		unsafe {
+			C.fflush(C.stdout)
+			C.fflush(C.stderr)
 			ret = C._wsystem(wcmd.to_wide())
 		}
 	} $else {