From 6b75e46d110cde77e3c5375de09170cc6760ca18 Mon Sep 17 00:00:00 2001
From: Jonas Jenwald <jonas.jenwald@gmail.com>
Date: Sat, 18 Dec 2021 11:35:21 +0100
Subject: [PATCH] Ignore *negative* /FitH parameters in the viewer (issue
 14385)

This provides a work-around for badly generated PDF documents that contain *negative* /FitH parameters (in the referenced issue the value `-32768` is used).
---
 web/base_viewer.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/web/base_viewer.js b/web/base_viewer.js
index affa751c4..f1932dc63 100644
--- a/web/base_viewer.js
+++ b/web/base_viewer.js
@@ -1173,7 +1173,7 @@ class BaseViewer {
         if (y === null && this._location) {
           x = this._location.left;
           y = this._location.top;
-        } else if (typeof y !== "number") {
+        } else if (typeof y !== "number" || y < 0) {
           // The "top" value isn't optional, according to the spec, however some
           // bad PDF generators will pretend that it is (fixes bug 1663390).
           y = pageHeight;