I tried on universe 10.1.0 running on DEBIAN 3.1
This is the output from raid..
>RAID BP TEST2
TEST2: 1: A=SPACE(7)
:: S
TEST2: 2: A= LOWER(FOLD(A,1))
:: S
Abnormal termination of UniVerse.
Fault type is 11. Layer type is BASIC run machine.
Fault occurred in BASIC program TEST2 at address e.
And here is the output from vlist
00001: A=SPACE(7)
00001 00000 : 184 space 7 => A
00002: A= LOWER(FOLD(A,1))
00002 00006 : 230 fold A 1 => $R0
00002 0000E : 0DA lower $R0 => A
00003: CRT A
00003 00014 : 046 crtcrlf A
I tried to split lower and fold up into seperate lines, and ran the program
with RAID
after the fold A prints as an empty string but trying to display the content of
A with A/ in RAID
produces several screens of binary output from the display device (ugly sight)
file, and after that the program continues but dies on the call to lower() no
wonders with that input to lower :-)
scrolling up in the binary rubbish i can see this :
:: s
TEST2: 4: CRT '(':A:')'
:: A/
STRING: T r L=-1 `$p/@1STRING: %c %c L=%i `%s'~O
notice that L = -1 ; so right after this the LOWER(A) will try to manipulate
stuff from shared memory, perhaps some common variables.... ??+
how long is A when the reported length is -1 ??
this is a potential buffer underrun problem, time to exploit the possibility
for manipulating the run time engine :-))
I don't know if the above is useful but it was kind of interesting....
best regards from 'sunny' Denmark
Claus Derlien
> -----Original Message-----
> From: [EMAIL PROTECTED]
> [mailto:[EMAIL PROTECTED] Behalf Of Norman, David
> (SAAS)
> Sent: Monday, August 29, 2005 2:08 AM
> To: 'u2-users@listserver.u2ug.org'
> Subject: RE: [U2] [UV] This 2 line program can crash a UV session
>
>
> Crashes on 10.0.16 HP-UX if folding on 1 character, OK if folding on
> 2characters.
>
> ========================
> David Norman
> Senior Software Engineer
> SA Ambulance Service
> Box 3, GPO
> Adelaide, South Australia 5001
> *+61 8 8274 0384
> fax +61 8 8271 4844
> * [EMAIL PROTECTED]
> <mailto:[EMAIL PROTECTED]>
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