Check loc.chapter to prevent oob error

Fixes #1151
ahrm · Dec 12, 2024 · ca75351 · ca75351
1 parent 7637caa
commit ca75351
Showing 1 changed file with 4 additions and 1 deletion.
diff --git a/pdf_viewer/document.cpp b/pdf_viewer/document.cpp
@@ -825,7 +825,10 @@ void Document::convert_toc_tree(fz_outline* root, std::vector<TocNode*>& output)
         if (root->page.page == -1) {
             float xp, yp;
             fz_location loc = fz_resolve_link(context, doc, root->uri, &xp, &yp);
-            int chapter_page = accum_chapter_pages[loc.chapter];
+            int chapter_page = 0;
+            if (loc.chapter >= 0 && loc.chapter < accum_chapter_pages.size()) {
+                chapter_page = accum_chapter_pages[loc.chapter];
+            }
             current_node->page = chapter_page + loc.page;
         }
         else {