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-rw-r--r--cache.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/cache.c b/cache.c
index b701e13..add647e 100644
--- a/cache.c
+++ b/cache.c
@@ -52,7 +52,7 @@ static int open_slot(struct cache_slot *slot)
 		return errno;
 
 	slot->bufsize = read(slot->cache_fd, slot->buf, sizeof(slot->buf));
-	if (slot->bufsize == 0)
+	if (slot->bufsize < 0)
 		return errno;
 
 	bufz = memchr(slot->buf, 0, slot->bufsize);