SIGSEGV by invalid memory access in mjs.c:11477

[LowryLan]

Invalid memory access in mjs.c: 114877

Environment

Ubuntu20.04

Steps to reproduce

1. version
   9eae0e6
2. compile mjs with ASAN

gcc -DMJS_MAIN mjs.c -fsanitize=address -ldl -g -o mjs-bin

4. command for reproducing the error

./mjs-bin -f poc

Download poc:
invalid-memory-access-mjs11477.zip

ASAN report

AddressSanitizer:DEADLYSIGNAL
=================================================================
==246910==ERROR: AddressSanitizer: SEGV on unknown address 0xffffffffffffff8d (pc 0x5555554860ef bp 0x00000000001d sp 0x7fffffffd268 T0)
==246910==The signal is caused by a WRITE memory access.
    #0 0x5555554860ef  (/home/lowry/Documents/HTFuzz/program/mjs/code/mjs-bin+0x860ef)

AddressSanitizer can not provide additional info.
SUMMARY: AddressSanitizer: SEGV (/home/lowry/Documents/HTFuzz/program/mjs/code/mjs-bin+0x860ef) 
==246910==ABORTING