Multiple OOB reads (of size 4) in rb_bigzero_p
An AFL fuzzing session against 6b4d78fc43 this weekend and turned up 17 crashes in rb_bigzero_p.
I suspect that all of these are the same underlying bug -- they are all a 4 byte OOB read in rb_bigzero_p -- so I'm including all of them in this single issue. If you'd like me to report each of these separately let me know and I'll happily do that.
For each reproducer, I have included:
- the reproducer
- stdout from ruby
- gdb backtrace
- valgrind report