Malbolge Survival Kit

malbolge crashed with IndexError in main()

Bug #344918 reported by Toni Ruottu on 2009-03-18

This bug affects 1 person

Affects		Status	Importance	Assigned to	Milestone
	Malbolge Survival Kit	Invalid	Low	Toni Ruottu
	malbolge (Ubuntu)	Invalid	Undecided	Unassigned

Bug Description

Binary package hint: malbolge

Giving the interpreter a zero byte source code file (created with command "touch empty.mb") makes the interpreter crash.

ProblemType: Crash
Architecture: i386
DistroRelease: Ubuntu 9.04
ExecutablePath: /usr/bin/malbolge
InterpreterPath: /usr/bin/python2.6
NonfreeKernelModules: nvidia
Package: malbolge 0.2-0ubuntu1
PackageArchitecture: all
ProcCmdline: python /usr/bin/malbolge empty.mb
ProcEnviron:
SHELL=/bin/bash
PATH=(custom, user)
LANG=en_US.UTF-8
PythonArgs: ['/usr/bin/malbolge', 'empty.mb']
SourcePackage: malbolge
Title: malbolge crashed with IndexError in main()
Uname: Linux 2.6.28-10-generic i686
UserGroups: adm admin audio cdrom dialout dip floppy lpadmin netdev plugdev powerdev scanner vboxusers video

Tags:

Related branches

lp://staging/msk

Revision history for this message

Toni Ruottu (toni-ruottu) wrote on 2009-03-18:

Dependencies.txt Edit (832 bytes, text/plain; charset="utf-8")
ProcMaps.txt Edit (5.0 KiB, text/plain; charset="utf-8")
ProcStatus.txt Edit (794 bytes, text/plain; charset="utf-8")
Traceback.txt Edit (204 bytes, text/plain; charset="utf-8")

Changed in msk:
assignee:	nobody → toni-ruottu
importance:	Undecided → Low
status:	New → In Progress

Revision history for this message

Toni Ruottu (toni-ruottu) wrote on 2009-03-18:

The interpreter itself seems to work ok. It is mbs (Malbolge Script) autodetection that fails.

Revision history for this message

Toni Ruottu (toni-ruottu) wrote on 2009-03-18:

Actually it is a bit unclear what should be done with an empty source file. My current python implementation does nothing, while the reference implementation seems to loop forever (or atleast for a long time). The original specification implies that you need atleast two registers long source code in order to initialize main memory of the virtual machine. I'm going to take this as my guiding principle and use an exception that says the source code is too short.

Toni Ruottu (toni-ruottu) on 2009-03-19

Changed in msk:
status:	In Progress → Fix Committed

Revision history for this message

dino99 (9d9) wrote on 2016-01-23:

This version has died long ago; no more supported

dino99 (9d9) on 2016-01-23

Changed in malbolge (Ubuntu):
status:	New → Invalid
Changed in msk:
status:	Fix Committed → Invalid

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