It looks like a bug to me.
[ivan@localhost wcmd]$ ./wcmd WCMD Version 0.17
Z:\home\ivan\Development\Wine\CVS\wine\wine\programs\wcmd>help for wine: Unhandled exception (thread 0009), starting debugger... fixme:console:SetConsoleCtrlHandler (0x405ec9e0,1) - no error checking or testing yet WineDbg starting on pid 0x8 Unhandled exception: page fault on read access to 0x20656854 in 32-bit code (0x400d2473). In 32 bit mode. 0x400d2473 strlen in libc.so.6: movl 0x0(%eax),%ecx Wine-dbg>bt Backtrace: =>1 0x400d2473 strlen+0x33 in libc.so.6 (0x406eed1c) 2 0x400ba8cb _IO_vsprintf+0x8b in libc.so.6 (0x406eede4) 3 0x405c9eeb WCMD_output+0x2b(format=0x406ef20c) [wcmdmain.c:741] in wcmd (0x406ef200) 4 0x405c7020 WCMD_give_help+0x80(command=0x4039b8a5) [builtins.c:352] in wcmd (0x406efa18) 5 0x405c9563 .L153+0x9 in wcmd (0x406efa58) 6 0x405c91d4 main+0x4f4(argc=0x1, argv=0xbffff49c) [wcmdmain.c:244] in wcmd (0x406efe9c) 7 0x405c6169 __wine_exe_main+0x169 in wcmd (0x406eff2c) 8 0x404e6a88 start_process+0xc8(arg=0x0) [process.c:995] in kernel32 (0x406efff4) 9 0x4001cd9d wine_switch_to_stack+0x11 in libwine.so.1 (0x00000000) Wine-dbg>quit WineDbg terminated on pid 0x8 [ivan@localhost wcmd]$