Crash in page_set_function when EPUB navMap refers to missing file

[correctmost]

Expected behaviour

Atril opens the linked EPUB

Actual behaviour

Atril crashes when opening the linked EPUB

Steps to reproduce the behaviour

• Save crash.epub
• atril crash.epub

Backtrace

Thread 16 "EvJobScheduler" received signal SIGSEGV, Segmentation fault.
[Switching to Thread 0x7fffd2ffd6c0 (LWP 4643)]
page_set_function (Link=0x7fffbc00bbf0, contentList=0x7fffbc00b660 = {...}) at /usr/src/debug/atril/atril-1.26.1/backend/epub/epub-document.c:1617
1617            pagedata = listiter->data;                                                                                                                                                                                                    
(gdb) p listiter
$1 = 0x0
(gdb) bt
#0  page_set_function (Link=0x7fffbc00bbf0, contentList=0x7fffbc00b660 = {...}) at /usr/src/debug/atril/atril-1.26.1/backend/epub/epub-document.c:1617
#1  0x00007ffff706dcd0 in g_list_foreach (list=<optimized out>, func=func@entry=0x7fffe043ddb0 <page_set_function>, user_data=user_data@entry=0x7fffbc00b660) at ../glib/glib/glist.c:1092
#2  0x00007fffe044190d in epub_document_set_index_pages (contentList=0x7fffbc00b660 = {...}, index=<optimized out>) at /usr/src/debug/atril/atril-1.26.1/backend/epub/epub-document.c:1636
#3  epub_document_load (document=<optimized out>, uri=<optimized out>, error=0x7fffd2ffc1a0) at /usr/src/debug/atril/atril-1.26.1/backend/epub/epub-document.c:1762
#4  0x00007ffff7f71048 in ev_document_load (document=document@entry=0x7fffbc0066f0, uri=uri@entry=0x555555a03d60 "file:///home/s/Downloads/crash.epub", error=error@entry=0x7fffd2ffc210)
    at /usr/src/debug/atril/atril-1.26.1/libdocument/ev-document.c:236
#5  0x00007ffff7f71c75 in ev_document_factory_get_document (uri=0x555555a03d60 "file:///home/s/Downloads/crash.epub", error=error@entry=0x7fffd2ffc260) at /usr/src/debug/atril/atril-1.26.1/libdocument/ev-document-factory.c:235
#6  0x00007ffff7f2372d in ev_job_load_run (job=0x5555559ed7e0) at /usr/src/debug/atril/atril-1.26.1/libview/ev-jobs.c:1122
#7  0x00007ffff7f22659 in ev_job_thread (job=0x5555559ed7e0) at /usr/src/debug/atril/atril-1.26.1/libview/ev-job-scheduler.c:184
#8  ev_job_thread_proxy (data=<optimized out>) at /usr/src/debug/atril/atril-1.26.1/libview/ev-job-scheduler.c:217
#9  0x00007ffff70a4a05 in g_thread_proxy (data=0x5555559fe210) at ../glib/glib/gthread.c:831
#10 0x00007ffff6dd69eb in start_thread (arg=<optimized out>) at pthread_create.c:444
#11 0x00007ffff6e5a7cc in clone3 () at ../sysdeps/unix/sysv/linux/x86_64/clone3.S:78

Atril can open the EPUB if I delete this code from OEBPS/toc.ncx (coverpage.xhtml does not exist):

<navPoint id="navpoint-coverpage" playOrder="0">
	<navLabel>
		<text>Cover Page</text>
	</navLabel>
	<content src="Text/coverpage.xhtml" />
</navPoint>

MATE general version

mate-desktop 1.26.2-1

Package version

atril 1.26.1-1

Linux Distribution

Arch

Link to bugreport of your Distribution (requirement)

N/A