pg_restore crashes passing NULL to strcmp (9.4 rc1)

I'm not sure what's wrong with this dump file; I remember copying it with rsync
some months ago, experiencing the crash, and recopying it, not able to break
off and go into debugging postgres at that point.

$ dpkg-query -W postgresql-client-9.4
postgresql-client-9.4   9.4~rc1-1

(gdb) r
Starting program: /usr/lib/postgresql/9.4/bin/pg_restore /home/pryzbyj/clientdb/ptci.d/ptci.segv
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".

Program received signal SIGSEGV, Segmentation fault.
ReadToc (AH=AH@entry=0x55555577b3b0)
    at /build/buildd/postgresql-9.4-9.4~rc1/build/../src/bin/pg_dump/pg_backup_archiver.c:2426
2426    /build/buildd/postgresql-9.4-9.4~rc1/build/../src/bin/pg_dump/pg_backup_archiver.c: No such file or directory.

2422                 te->owner = ReadStr(AH);
2423                 if (AH->version >= K_VERS_1_9)
2424                 {
2425                         if (strcmp(ReadStr(AH), "true") == 0)
2426                                 te->withOids = true;
2427                         else
2428                                 te->withOids = false;
2429                 }
2430                 else
2431                         te->withOids = true;

(gdb) p ReadStr(AH)
$1 = 0x0