From 7af36d6c40659feff33df4bd8a87f76e43093540 Mon Sep 17 00:00:00 2001
From: Sam Lantinga <slouken@libsdl.org>
Date: Sun, 14 Sep 2025 12:01:36 -0700
Subject: [PATCH] Ignore errors flushing output on POSIX pipes

Fixes https://github.com/libsdl-org/SDL/issues/13116
Fixes https://github.com/libsdl-org/SDL/issues/13412

(cherry picked from commit e40d337a478cb0c278cc5866296b44542d2f191a)
---
 src/io/SDL_iostream.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/io/SDL_iostream.c b/src/io/SDL_iostream.c
index 989f3b9c4c..41748cf6d3 100644
--- a/src/io/SDL_iostream.c
+++ b/src/io/SDL_iostream.c
@@ -455,7 +455,7 @@ static bool SDLCALL fd_flush(void *userdata, SDL_IOStatus *status)
         result = SDL_fdatasync(iodata->fd);
     } while (result < 0 && errno == EINTR);
 
-    if (result < 0) {
+    if (result < 0 && errno != EINVAL) {
         return SDL_SetError("Error flushing datastream: %s", strerror(errno));
     }
     return true;