From e6ef806ef40a421435b1209f0f79d778c03fe04a Mon Sep 17 00:00:00 2001
From: Jakob Kaivo <jkk@ung.org>
Date: Mon, 27 May 2024 13:04:16 -0400
Subject: handle use-after-close

---
 src/stdio/fclose.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

(limited to 'src/stdio/fclose.c')

diff --git a/src/stdio/fclose.c b/src/stdio/fclose.c
index f438a9c2..37198fcb 100644
--- a/src/stdio/fclose.c
+++ b/src/stdio/fclose.c
@@ -26,7 +26,7 @@ int fclose(FILE *stream)
 	SIGNAL_SAFE(0);
 
 	flockfile(stream);
-	if (fflush(stream) == EOF) {
+	if (stream->operation == OP_OUTPUT && fflush(stream) == EOF) {
 		/* set errno */
 		return EOF;
 	}
@@ -44,6 +44,7 @@ int fclose(FILE *stream)
 	}
 
 	memset(stream, '\0', sizeof(*stream));
+	stream->fd = -1;
 
 	/*
 	RETURN_SUCCESS(0);
-- 
cgit v1.2.1