From 4d6e0e008725ffe75666af852c7d1493f2a7756e Mon Sep 17 00:00:00 2001
From: "Ryan C. Gordon" <icculus@icculus.org>
Date: Wed, 10 Sep 2025 11:45:08 -0400
Subject: [PATCH] io: read_fd should only report EOF on a zero-byte return
 value.

POSIX says that's the EOF indicator, not a non-zero a short read.
---
 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 2c1544144f..4dd0e5b739 100644
--- a/src/io/SDL_iostream.c
+++ b/src/io/SDL_iostream.c
@@ -431,7 +431,7 @@ static size_t SDLCALL fd_read(void *userdata, void *ptr, size_t size, SDL_IOStat
             SDL_SetError("Error reading from datastream: %s", strerror(errno));
         }
         bytes = 0;
-    } else if (bytes < size) {
+    } else if (bytes == 0) {
         *status = SDL_IO_STATUS_EOF;
     }
     return (size_t)bytes;