From 1b34c0690f0c159ea528c2ccd6c0811e450896b6 Mon Sep 17 00:00:00 2001
From: Marton Balint <cus@passwd.hu>
Date: Wed, 29 Jan 2020 00:46:01 +0100
Subject: avutil/log: fix detecting console mode on Win32

A redirected stderr can still have a valid handle.

Signed-off-by: Marton Balint <cus@passwd.hu>
---
 libavutil/log.c | 3 +++
 1 file changed, 3 insertions(+)

(limited to 'libavutil')

diff --git a/libavutil/log.c b/libavutil/log.c
index 64950016e8..6374050770 100644
--- a/libavutil/log.c
+++ b/libavutil/log.c
@@ -124,7 +124,10 @@ static void check_color_terminal(void)
 {
 #if defined(_WIN32) && HAVE_SETCONSOLETEXTATTRIBUTE && HAVE_GETSTDHANDLE
     CONSOLE_SCREEN_BUFFER_INFO con_info;
+    DWORD dummy;
     con = GetStdHandle(STD_ERROR_HANDLE);
+    if (con != INVALID_HANDLE_VALUE && !GetConsoleMode(con, &dummy))
+        con = INVALID_HANDLE_VALUE;
     use_color = (con != INVALID_HANDLE_VALUE) && !getenv("AV_LOG_FORCE_NOCOLOR");
     if (use_color) {
         GetConsoleScreenBufferInfo(con, &con_info);
-- 
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