slice: allow zero-length size

1 files changed, 2 insertions, 1 deletions

diff --git a/slice.c b/slice.c
index 119ecef..005084d 100644
--- a/slice.c
+++ b/slice.c
@@ -34,7 +34,7 @@ int main(int argc, char **argv) {
 		bytes_end += seekpos;
 	}
 
-	if (bytes_end <= seekpos) {
+	if (bytes_end < seekpos) {
 		fprintf(stderr, "The last byte must be greater than the first byte.\n");
 		return 1;
 	}
@@ -60,6 +60,7 @@ int main(int argc, char **argv) {
 		if (bytes_end - read_bytes < read_count)
 			read_count = bytes_end - read_bytes;
 
+		/* if fseek failed, discard some bytes */
 		if (read_bytes < seekpos)
 			skip_bytes = seekpos - read_bytes;