From 04f78c935c0e1e97675e491b32147538c627de0e Mon Sep 17 00:00:00 2001
From: Calixte Denizet <calixte.denizet@gmail.com>
Date: Mon, 8 Aug 2022 22:04:14 +0200
Subject: [PATCH] Fix OTS issue with empty index (#15289)
---
src/core/cff_parser.js | 5 ++---
test/pdfs/issue15289.pdf.link | 2 ++
test/test_manifest.json | 9 +++++++++
3 files changed, 13 insertions(+), 3 deletions(-)
create mode 100644 test/pdfs/issue15289.pdf.link
diff --git a/src/core/cff_parser.js b/src/core/cff_parser.js
index 78ebb167b..fd1a12042 100644
--- a/src/core/cff_parser.js
+++ b/src/core/cff_parser.js
@@ -1864,10 +1864,9 @@ class CFFCompiler {
// First 2 bytes contains the number of objects contained into this index
const count = objects.length;
- // If there is no object, just create an index. This technically
- // should just be [0, 0] but OTS has an issue with that.
+ // If there is no object, just create an index.
if (count === 0) {
- return [0, 0, 0];
+ return [0, 0];
}
const data = [(count >> 8) & 0xff, count & 0xff];
diff --git a/test/pdfs/issue15289.pdf.link b/test/pdfs/issue15289.pdf.link
new file mode 100644
index 000000000..0fd7733b4
--- /dev/null
+++ b/test/pdfs/issue15289.pdf.link
@@ -0,0 +1,2 @@
+https://github.com/mozilla/pdf.js/files/9280755/issue15289.pdf
+
diff --git a/test/test_manifest.json b/test/test_manifest.json
index 6635609a4..797c19a87 100644
--- a/test/test_manifest.json
+++ b/test/test_manifest.json
@@ -6882,5 +6882,14 @@
"md5": "8505033d63625dfd77e90a3722b0c316",
"rounds": 1,
"type": "eq"
+ },
+ { "id": "issue15289",
+ "file": "pdfs/issue15289.pdf",
+ "md5": "f3d20aee398e052ac3dce7cc030f50de",
+ "link": true,
+ "rounds": 1,
+ "firstPage": 1,
+ "lastPage": 1,
+ "type": "eq"
}
]