The problem:

I built the 'ds' program and tried to compile "sieve.ds" with it. The result was a segmentation fault. I recompiled in debug mode and tried again, using a debugger this time. An assertion was triggered at value.d:717:

	(gdb) list
	712		    case V_OBJECT:
	713			if (v.object == object)
	714			    return 0;
	715			break;
	716		    default:
	717			assert(0);
	718		}
	719		return -1;
	720	    }
	721

The switch is testing against the variable this.vtype, whose value turns out to be 0 (V_NONE), which is not tested for by the switch. The complete value of "this" was:

	(gdb) print *this
	$12 = {vtype = 0 '\0', hash = 0, dbool = 0, number = 0,
	       string = {length = 0, ptr = 0x0},
	       object = @0x0, int32 = 0, uint32 = 0, uint16 = 0, iter = 0x0}

Some information about the host system:

OS: Debian Lenny (stable).

Output of "uname -a": Linux cpe-71-72-214-60 2.6.22-2-686 #1 SMP Fri Aug 31 00:24:01 UTC 2007 i686 GNU/Linux

D Compiler: gdc (GCC) 4.1.3 20080623 (prerelease gdc 0.25 20080419,
using dmd 1.024) (Debian 0.25-20080616-4.1.2-23.2) Copyright (C) 2006

DMDScript version: UNKNOWN (downloaded today from
http://ftp.digitalmars.com/dmdscript.zip).

Please try my fork of DMDScript - It's used quite a bit, as I've written a JS compresser / documenter with it.

http://www.akbkhome.com/svn/rooscript/

I do remember this bug a while back, cant' remember the fix, but I think it's fixed in rooscript.

Regards
Alan

Anomymous Coward wrote:
> The problem:
> 
> I built the 'ds' program and tried to compile "sieve.ds" with it. The
> result was a segmentation fault. I recompiled in debug mode and tried
> again, using a debugger this time. An assertion was triggered at
> value.d:717:
> 
> 	(gdb) list
> 	712		    case V_OBJECT:
> 	713			if (v.object == object)
> 	714			    return 0;
> 	715			break;
> 	716		    default:
> 	717			assert(0);
> 	718		}
> 	719		return -1;
> 	720	    }
> 	721	
> 
> The switch is testing against the variable this.vtype, whose
> value turns out to be 0 (V_NONE), which is not tested for by
> the switch. The complete value of "this" was:
> 
> 	(gdb) print *this
> 	$12 = {vtype = 0 '\0', hash = 0, dbool = 0, number = 0,
> 	       string = {length = 0, ptr = 0x0},
> 	       object = @0x0, int32 = 0, uint32 = 0, uint16 = 0, iter = 0x0}
> 
> Some information about the host system: 
> 
> OS: Debian Lenny (stable). 
> 
> Output of "uname -a": Linux cpe-71-72-214-60 2.6.22-2-686 #1 SMP Fri
> Aug 31 00:24:01 UTC 2007 i686 GNU/Linux
> 
> D Compiler: gdc (GCC) 4.1.3 20080623 (prerelease gdc 0.25 20080419,
> using dmd 1.024) (Debian 0.25-20080616-4.1.2-23.2) Copyright (C) 2006
> 
> DMDScript version: UNKNOWN (downloaded today from
> http://ftp.digitalmars.com/dmdscript.zip).
>