Lua through 5.4.0 has a segmentation fault in changedline in ldebug.c (e.g., when called by luaG_traceexec) because it incorrectly expects that an oldpc value is always updated upon a return of the flow of control to a function. CREATE(Triage):(User=admin) CVE-2020-15945 (https://nvd.nist.gov/vuln/detail/CVE-2020-15945)
