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-rw-r--r--libc/stdio/stdio.c5
1 files changed, 4 insertions, 1 deletions
diff --git a/libc/stdio/stdio.c b/libc/stdio/stdio.c
index 3f475aec0..63fb6bd00 100644
--- a/libc/stdio/stdio.c
+++ b/libc/stdio/stdio.c
@@ -203,8 +203,11 @@ void __stdio_flush_buffers(void)
if (WRITEABLE(fp)) {
/* Set the underlying fd to non-block mode to ensure
* that calls to _exit() and abort() will not block */
- fcntl(fp->fd, F_SETFL, O_NONBLOCK);
+ long flags;
+ fcntl(fp->fd, F_GETFL, &flags);
+ fcntl(fp->fd, F_SETFL, flags|O_NONBLOCK);
fflush(fp);
+ fcntl(fp->fd, F_SETFL, flags);
}
}
}