Re: [basex-talk] Improper Use? Potential bug?

4 Jun 2019


      Thanks. As Michael indicated, a self-contained query that allows us to
reproduce the bug would be great.
Buddy Kresge buddy.kresge@known2u.com schrieb am Di., 4. Juni 2019, 14:57:
...
Let me know what I can provide to assist.  I do have the entire stack
trace if that will help.
Buddy Kresge
buddy.kresge@known2u.com
o: 860-800-6677  ext: 501
c: 860-986-4830
*From:* BaseX-Talk basex-talk-bounces@mailman.uni-konstanz.de *On
Behalf Of *Buddy Kresge
*Sent:* Tuesday, June 4, 2019 8:55 AM
*To:* Christian Grün christian.gruen@gmail.com
*Cc:* BaseX basex-talk@mailman.uni-konstanz.de
*Subject:* Re: [basex-talk] Improper Use? Potential bug?
It does exist.  One of our employees ran in on 9.2.2, they were the first
to discover the issue.  Then I tried it on 9.2.0.
Buddy Kresge
buddy.kresge@known2u.com
o: 860-800-6677  ext: 501
c: 860-986-4830
*From:* Christian Grün christian.gruen@gmail.com
*Sent:* Tuesday, June 4, 2019 8:53 AM
*To:* Buddy Kresge buddy.kresge@known2u.com
*Cc:* Michael Seiferle ms@basex.org; BaseX <
basex-talk@mailman.uni-konstanz.de>
*Subject:* Re: [basex-talk] Improper Use? Potential bug?
Hi Buddy,
The stack trace indicates that you are using BaseX 9.2.
Could you please check if the bug persists with the latest version 9.2.2?
Thanks in advance,
Christian
Buddy Kresge buddy.kresge@known2u.com schrieb am Di., 4. Juni 2019,
14:07:
Do you want me to share the entire stack trace?  Or what is the best way
to get you the information you need?
Buddy Kresge
buddy.kresge@known2u.com
o: 860-800-6677  ext: 501
c: 860-986-4830
*From:* Michael Seiferle ms@basex.org
*Sent:* Tuesday, June 4, 2019 6:15 AM
*To:* Buddy Kresge buddy.kresge@known2u.com
*Cc:* basex-talk@mailman.uni-konstanz.de
*Subject:* Re: [basex-talk] Improper Use? Potential bug?
Hi Buddy,
that looks like a bug.
Would you mind sharing your XQuery or a SSCE?
I think this is definitely something we might want to have a look at :-)
Best from Konstanz
Michael
Am 03.06.2019 um 13:12 schrieb Buddy Kresge buddy.kresge@known2u.com:
I am all of a sudden getting the below error (and things were working just
fine – weird).  Works fine in 9.1.2 but not in 9.2.X.  Any guidance would
be greatly appreciated.
Note:  I tried to send you an email with the full stack trace, but the
moderator rejected it because the email was too long.  I’ve cut down the
size, but you now no longer have the full stack trace.  If you need the
full stack trace, please let me know how you’d like that shared with you.
Thanks,
Buddy
Error:
Improper use? Potential bug? Your feedback is welcome:
Contact: basex-talk@mailman.uni-konstanz.de
Version: BaseX 9.2
Java: AdoptOpenJdk, 1.8.0_202
OS: Windows 10, amd64
Stack Trace:
java.lang.ArrayIndexOutOfBoundsException: 1
           at org.basex.query.expr.Preds.simplify(Preds.java:215)

           at org.basex.query.expr.Filter.optimize(Filter.java:82)

           at org.basex.query.expr.Filter.inline(Filter.java:260)

           at org.basex.query.expr.gflwor.ForLet.inline(ForLet.java:66)

           at

org.basex.query.expr.gflwor.GFLWOR.inline(GFLWOR.java:804)
           at

org.basex.query.expr.gflwor.GFLWOR.inlineLets(GFLWOR.java:339)
           at

org.basex.query.expr.gflwor.GFLWOR.optimize(GFLWOR.java:106)
           at

org.basex.query.expr.gflwor.GFLWOR.compile(GFLWOR.java:98)
           at org.basex.query.expr.If.compile(If.java:63)

           at org.basex.query.func.StaticFunc.comp(StaticFunc.java:69)

           at

org.basex.query.func.StaticFuncs.compile(StaticFuncs.java:184)
           at

org.basex.query.func.fn.FnFunctionLookup.opt(FnFunctionLookup.java:34)
           at

org.basex.query.func.StandardFunc.optimize(StandardFunc.java:77)
           at org.basex.query.expr.Arr.compile(Arr.java:43)

           at

org.basex.query.expr.gflwor.ForLet.compile(ForLet.java:43)
           at

org.basex.query.expr.gflwor.GFLWOR.compile(GFLWOR.java:88)
           at org.basex.query.func.StaticFunc.comp(StaticFunc.java:69)

           at

org.basex.query.func.StaticFuncCall.compile(StaticFuncCall.java:64)
           at

org.basex.query.expr.gflwor.ForLet.compile(ForLet.java:43)
           at

org.basex.query.expr.gflwor.GFLWOR.compile(GFLWOR.java:88)
           at

org.basex.query.expr.gflwor.ForLet.compile(ForLet.java:43)
           at

org.basex.query.expr.gflwor.GFLWOR.compile(GFLWOR.java:88)
           at org.basex.query.func.StaticFunc.comp(StaticFunc.java:69)

           at

org.basex.query.func.StaticFuncCall.compile(StaticFuncCall.java:64)
           at

org.basex.query.expr.gflwor.GFLWOR.compile(GFLWOR.java:94)
           at org.basex.query.func.StaticFunc.comp(StaticFunc.java:69)

           at

org.basex.query.func.StaticFuncCall.compile(StaticFuncCall.java:64)
           at

org.basex.query.expr.gflwor.GFLWOR.compile(GFLWOR.java:94)
           at org.basex.query.func.StaticFunc.comp(StaticFunc.java:69)

           at

org.basex.query.func.StaticFuncs.compile(StaticFuncs.java:184)
           at

org.basex.query.func.fn.FnFunctionLookup.opt(FnFunctionLookup.java:34)
           at

org.basex.query.func.StandardFunc.optimize(StandardFunc.java:77)
           at org.basex.query.expr.Arr.compile(Arr.java:43)

           at

org.basex.query.expr.gflwor.ForLet.compile(ForLet.java:43)
           at

org.basex.query.expr.gflwor.GFLWOR.compile(GFLWOR.java:88)
           at org.basex.query.func.StaticFunc.comp(StaticFunc.java:69)

           at

org.basex.query.func.StaticFuncCall.compile(StaticFuncCall.java:64)
           at

org.basex.query.expr.gflwor.ForLet.compile(ForLet.java:43)
           at

org.basex.query.expr.gflwor.GFLWOR.compile(GFLWOR.java:88)
           at

org.basex.query.expr.gflwor.ForLet.compile(ForLet.java:43)
           at

org.basex.query.expr.gflwor.GFLWOR.compile(GFLWOR.java:88)
           at org.basex.query.func.StaticFunc.comp(StaticFunc.java:69)

           at

org.basex.query.func.StaticFuncCall.compile(StaticFuncCall.java:64)
           at

org.basex.query.expr.gflwor.GFLWOR.compile(GFLWOR.java:94)
           at org.basex.query.func.StaticFunc.comp(StaticFunc.java:69)

           at

org.basex.query.func.StaticFuncCall.compile(StaticFuncCall.java:64)
           at

org.basex.query.expr.gflwor.GFLWOR.compile(GFLWOR.java:94)
           at org.basex.query.func.StaticFunc.comp(StaticFunc.java:69)

           at

org.basex.query.func.StaticFuncs.compile(StaticFuncs.java:184)
           at

org.basex.query.func.fn.FnFunctionLookup.opt(FnFunctionLookup.java:34)
           at

org.basex.query.func.StandardFunc.optimize(StandardFunc.java:77)
           at org.basex.query.expr.Arr.compile(Arr.java:43)

           at

org.basex.query.expr.gflwor.ForLet.compile(ForLet.java:43)
           at

org.basex.query.expr.gflwor.GFLWOR.compile(GFLWOR.java:88)
           at org.basex.query.func.StaticFunc.comp(StaticFunc.java:69)

           at

org.basex.query.func.StaticFuncCall.compile(StaticFuncCall.java:64)
           at

org.basex.query.expr.gflwor.ForLet.compile(ForLet.java:43)
           at

org.basex.query.expr.gflwor.GFLWOR.compile(GFLWOR.java:88)
           at

org.basex.query.expr.gflwor.ForLet.compile(ForLet.java:43)
           at

org.basex.query.expr.gflwor.GFLWOR.compile(GFLWOR.java:88)
           at org.basex.query.func.StaticFunc.comp(StaticFunc.java:69)

           at

org.basex.query.func.StaticFuncCall.compile(StaticFuncCall.java:64)
           at

org.basex.query.expr.gflwor.GFLWOR.compile(GFLWOR.java:94)
           at org.basex.query.func.StaticFunc.comp(StaticFunc.java:69)

           at

org.basex.query.func.StaticFuncCall.compile(StaticFuncCall.java:64)
           at

org.basex.query.expr.gflwor.GFLWOR.compile(GFLWOR.java:94)
           at org.basex.query.func.StaticFunc.comp(StaticFunc.java:69)

           at

org.basex.query.func.StaticFuncs.compile(StaticFuncs.java:184)
           at

org.basex.query.func.fn.FnFunctionLookup.opt(FnFunctionLookup.java:34)
           at

org.basex.query.func.StandardFunc.optimize(StandardFunc.java:77)
           at org.basex.query.expr.Arr.compile(Arr.java:43)

           at

org.basex.query.expr.gflwor.ForLet.compile(ForLet.java:43)
           at

org.basex.query.expr.gflwor.GFLWOR.compile(GFLWOR.java:88)
           at org.basex.query.func.StaticFunc.comp(StaticFunc.java:69)

           at

org.basex.query.func.StaticFuncCall.compile(StaticFuncCall.java:64)
           at

org.basex.query.expr.gflwor.ForLet.compile(ForLet.java:43)
           at

org.basex.query.expr.gflwor.GFLWOR.compile(GFLWOR.java:88)
           at

org.basex.query.expr.gflwor.ForLet.compile(ForLet.java:43)
           at

org.basex.query.expr.gflwor.GFLWOR.compile(GFLWOR.java:88)
           at org.basex.query.func.StaticFunc.comp(StaticFunc.java:69)

           at

org.basex.query.func.StaticFuncCall.compile(StaticFuncCall.java:64)
           at

org.basex.query.expr.gflwor.GFLWOR.compile(GFLWOR.java:94)
           at org.basex.query.func.StaticFunc.comp(StaticFunc.java:69)

           at

org.basex.query.func.StaticFuncCall.compile(StaticFuncCall.java:64)
           at

org.basex.query.expr.gflwor.GFLWOR.compile(GFLWOR.java:94)
           at org.basex.query.func.StaticFunc.comp(StaticFunc.java:69)

           at

org.basex.query.func.StaticFuncs.compile(StaticFuncs.java:184)
           at

org.basex.query.func.fn.FnFunctionLookup.opt(FnFunctionLookup.java:34)
           at

org.basex.query.func.StandardFunc.optimize(StandardFunc.java:77)
           at org.basex.query.expr.Arr.compile(Arr.java:43)

           at

org.basex.query.expr.gflwor.ForLet.compile(ForLet.java:43)
           at

org.basex.query.expr.gflwor.GFLWOR.compile(GFLWOR.java:88)
           at org.basex.query.func.StaticFunc.comp(StaticFunc.java:69)

           at

org.basex.query.func.StaticFuncCall.compile(StaticFuncCall.java:64)
           at

org.basex.query.expr.gflwor.ForLet.compile(ForLet.java:43)
           at

org.basex.query.expr.gflwor.GFLWOR.compile(GFLWOR.java:88)
           at

org.basex.query.expr.gflwor.ForLet.compile(ForLet.java:43)
           at

org.basex.query.expr.gflwor.GFLWOR.compile(GFLWOR.java:88)
           at org.basex.query.func.StaticFunc.comp(StaticFunc.java:69)

           at

org.basex.query.func.StaticFuncCall.compile(StaticFuncCall.java:64)
           at

org.basex.query.expr.gflwor.GFLWOR.compile(GFLWOR.java:94)
           at org.basex.query.func.StaticFunc.comp(StaticFunc.java:69)

           at

org.basex.query.func.StaticFuncCall.compile(StaticFuncCall.java:64)
           at

org.basex.query.expr.gflwor.GFLWOR.compile(GFLWOR.java:94)
           at org.basex.query.func.StaticFunc.comp(StaticFunc.java:69)

           at

org.basex.query.func.StaticFuncs.compile(StaticFuncs.java:184)
           at

org.basex.query.func.fn.FnFunctionLookup.opt(FnFunctionLookup.java:34)
           at

org.basex.query.func.StandardFunc.optimize(StandardFunc.java:77)
           at org.basex.query.expr.Arr.compile(Arr.java:43)

           at

org.basex.query.expr.gflwor.ForLet.compile(ForLet.java:43)
           at

org.basex.query.expr.gflwor.GFLWOR.compile(GFLWOR.java:88)
           at org.basex.query.func.StaticFunc.comp(StaticFunc.java:69)

           at

org.basex.query.func.StaticFuncCall.compile(StaticFuncCall.java:64)
           at

org.basex.query.expr.gflwor.ForLet.compile(ForLet.java:43)
           at

org.basex.query.expr.gflwor.GFLWOR.compile(GFLWOR.java:88)
           at

org.basex.query.expr.gflwor.ForLet.compile(ForLet.java:43)
           at

org.basex.query.expr.gflwor.GFLWOR.compile(GFLWOR.java:88)
           at org.basex.query.func.StaticFunc.comp(StaticFunc.java:69)

           at

org.basex.query.func.StaticFuncCall.compile(StaticFuncCall.java:64)
           at

org.basex.query.expr.gflwor.GFLWOR.compile(GFLWOR.java:94)
           at org.basex.query.func.StaticFunc.comp(StaticFunc.java:69)

           at

org.basex.query.func.StaticFuncCall.compile(StaticFuncCall.java:64)
           at

org.basex.query.expr.gflwor.GFLWOR.compile(GFLWOR.java:94)
           at org.basex.query.func.StaticFunc.comp(StaticFunc.java:69)

           at

org.basex.query.func.StaticFuncs.compile(StaticFuncs.java:184)
           at

org.basex.query.func.fn.FnFunctionLookup.opt(FnFunctionLookup.java:34)
           at

org.basex.query.func.StandardFunc.optimize(StandardFunc.java:77)
           at org.basex.query.expr.Arr.compile(Arr.java:43)

           at

org.basex.query.expr.gflwor.ForLet.compile(ForLet.java:43)
           at

org.basex.query.expr.gflwor.GFLWOR.compile(GFLWOR.java:88)
           at org.basex.query.func.StaticFunc.comp(StaticFunc.java:69)

           at

org.basex.query.func.StaticFuncCall.compile(StaticFuncCall.java:64)
           at

org.basex.query.expr.gflwor.ForLet.compile(ForLet.java:43)
           at

org.basex.query.expr.gflwor.GFLWOR.compile(GFLWOR.java:88)
           at

org.basex.query.expr.gflwor.ForLet.compile(ForLet.java:43)
           at

org.basex.query.expr.gflwor.GFLWOR.compile(GFLWOR.java:88)
           at org.basex.query.func.StaticFunc.comp(StaticFunc.java:69)

           at

org.basex.query.func.StaticFuncCall.compile(StaticFuncCall.java:64)
           at

org.basex.query.expr.gflwor.GFLWOR.compile(GFLWOR.java:94)
           at org.basex.query.func.StaticFunc.comp(StaticFunc.java:69)

           at

org.basex.query.func.StaticFuncCall.compile(StaticFuncCall.java:64)
           at

org.basex.query.expr.gflwor.GFLWOR.compile(GFLWOR.java:94)
           at org.basex.query.func.StaticFunc.comp(StaticFunc.java:69)

           at

org.basex.query.func.StaticFuncs.compile(StaticFuncs.java:184)
           at

org.basex.query.func.fn.FnFunctionLookup.opt(FnFunctionLookup.java:34)
           at

org.basex.query.func.StandardFunc.optimize(StandardFunc.java:77)
           at org.basex.query.expr.Arr.compile(Arr.java:43)

           at

org.basex.query.expr.gflwor.ForLet.compile(ForLet.java:43)
           at

org.basex.query.expr.gflwor.GFLWOR.compile(GFLWOR.java:88)
           at org.basex.query.func.StaticFunc.comp(StaticFunc.java:69)

           at

org.basex.query.func.StaticFuncCall.compile(StaticFuncCall.java:64)
           at

org.basex.query.expr.gflwor.ForLet.compile(ForLet.java:43)
           at

org.basex.query.expr.gflwor.GFLWOR.compile(GFLWOR.java:88)
           at

org.basex.query.expr.gflwor.ForLet.compile(ForLet.java:43)
           at

org.basex.query.expr.gflwor.GFLWOR.compile(GFLWOR.java:88)
           at org.basex.query.func.StaticFunc.comp(StaticFunc.java:69)

           at

org.basex.query.func.StaticFuncCall.compile(StaticFuncCall.java:64)
           at

org.basex.query.expr.gflwor.GFLWOR.compile(GFLWOR.java:94)
           at org.basex.query.func.StaticFunc.comp(StaticFunc.java:69)

           at

org.basex.query.func.StaticFuncCall.compile(StaticFuncCall.java:64)
           at

org.basex.query.expr.gflwor.GFLWOR.compile(GFLWOR.java:94)
           at org.basex.query.func.StaticFunc.comp(StaticFunc.java:69)

           at

org.basex.query.func.StaticFuncs.compile(StaticFuncs.java:184)
           at

org.basex.query.func.fn.FnFunctionLookup.opt(FnFunctionLookup.java:34)
           at

org.basex.query.func.StandardFunc.optimize(StandardFunc.java:77)
           at org.basex.query.expr.Arr.compile(Arr.java:43)

           at

org.basex.query.expr.gflwor.ForLet.compile(ForLet.java:43)
           at

org.basex.query.expr.gflwor.GFLWOR.compile(GFLWOR.java:88)
           at org.basex.query.func.StaticFunc.comp(StaticFunc.java:69)

           at

org.basex.query.func.StaticFuncCall.compile(StaticFuncCall.java:64)
           at

org.basex.query.expr.gflwor.ForLet.compile(ForLet.java:43)
           at

org.basex.query.expr.gflwor.GFLWOR.compile(GFLWOR.java:88)
           at

org.basex.query.expr.gflwor.ForLet.compile(ForLet.java:43)
           at

org.basex.query.expr.gflwor.GFLWOR.compile(GFLWOR.java:88)
           at org.basex.query.func.StaticFunc.comp(StaticFunc.java:69)

           at

org.basex.query.func.StaticFuncCall.compile(StaticFuncCall.java:64)
           at

org.basex.query.expr.gflwor.GFLWOR.compile(GFLWOR.java:94)
           at org.basex.query.func.StaticFunc.comp(StaticFunc.java:69)

           at

org.basex.query.func.StaticFuncCall.compile(StaticFuncCall.java:64)
           at

org.basex.query.expr.gflwor.GFLWOR.compile(GFLWOR.java:94)
           at org.basex.query.func.StaticFunc.comp(StaticFunc.java:69)

           at

org.basex.query.func.StaticFuncs.compile(StaticFuncs.java:184)
           at

org.basex.query.func.fn.FnFunctionLookup.opt(FnFunctionLookup.java:34)
           at

org.basex.query.func.StandardFunc.optimize(StandardFunc.java:77)
           at org.basex.query.expr.Arr.compile(Arr.java:43)

           at

org.basex.query.expr.gflwor.ForLet.compile(ForLet.java:43)
           at

org.basex.query.expr.gflwor.GFLWOR.compile(GFLWOR.java:88)
           at org.basex.query.func.StaticFunc.comp(StaticFunc.java:69)

           at

org.basex.query.func.StaticFuncCall.compile(StaticFuncCall.java:64)
           at

org.basex.query.expr.gflwor.ForLet.compile(ForLet.java:43)
           at

org.basex.query.expr.gflwor.GFLWOR.compile(GFLWOR.java:88)
           at

org.basex.query.expr.gflwor.ForLet.compile(ForLet.java:43)
           at

org.basex.query.expr.gflwor.GFLWOR.compile(GFLWOR.java:88)
           at org.basex.query.func.StaticFunc.comp(StaticFunc.java:69)

           at

org.basex.query.func.StaticFuncCall.compile(StaticFuncCall.java:64)
           at

org.basex.query.expr.gflwor.GFLWOR.compile(GFLWOR.java:94)
           at org.basex.query.func.StaticFunc.comp(StaticFunc.java:69)

           at

org.basex.query.func.StaticFuncCall.compile(StaticFuncCall.java:64)
           at

org.basex.query.expr.gflwor.GFLWOR.compile(GFLWOR.java:94)
           at org.basex.query.func.StaticFunc.comp(StaticFunc.java:69)

           at

org.basex.query.func.StaticFuncs.compile(StaticFuncs.java:184)
           at

org.basex.query.func.fn.FnFunctionLookup.opt(FnFunctionLookup.java:34)
           at

org.basex.query.func.StandardFunc.optimize(StandardFunc.java:77)
           at org.basex.query.expr.Arr.compile(Arr.java:43)

           at

org.basex.query.expr.gflwor.ForLet.compile(ForLet.java:43)
           at

org.basex.query.expr.gflwor.GFLWOR.compile(GFLWOR.java:88)
           at org.basex.query.func.StaticFunc.comp(StaticFunc.java:69)

           at

org.basex.query.func.StaticFuncCall.compile(StaticFuncCall.java:64)
           at

org.basex.query.expr.gflwor.ForLet.compile(ForLet.java:43)
           at

org.basex.query.expr.gflwor.GFLWOR.compile(GFLWOR.java:88)
           at

org.basex.query.expr.gflwor.ForLet.compile(ForLet.java:43)
           at

org.basex.query.expr.gflwor.GFLWOR.compile(GFLWOR.java:88)
           at org.basex.query.func.StaticFunc.comp(StaticFunc.java:69)

           at

org.basex.query.func.StaticFuncCall.compile(StaticFuncCall.java:64)
           at

org.basex.query.expr.gflwor.GFLWOR.compile(GFLWOR.java:94)
           at org.basex.query.func.StaticFunc.comp(StaticFunc.java:69)

           at

org.basex.query.func.StaticFuncCall.compile(StaticFuncCall.java:64)
           at

org.basex.query.expr.gflwor.GFLWOR.compile(GFLWOR.java:94)
           at org.basex.query.func.StaticFunc.comp(StaticFunc.java:69)

           at

org.basex.query.func.StaticFuncs.compile(StaticFuncs.java:184)
           at

org.basex.query.func.fn.FnFunctionLookup.opt(FnFunctionLookup.java:34)
           at

org.basex.query.func.StandardFunc.optimize(StandardFunc.java:77)
           at org.basex.query.expr.Arr.compile(Arr.java:43)

           at

org.basex.query.expr.gflwor.ForLet.compile(ForLet.java:43)
           at

org.basex.query.expr.gflwor.GFLWOR.compile(GFLWOR.java:88)
           at org.basex.query.func.StaticFunc.comp(StaticFunc.java:69)

           at

org.basex.query.func.StaticFuncCall.compile(StaticFuncCall.java:64)
           at

org.basex.query.expr.gflwor.ForLet.compile(ForLet.java:43)
           at

org.basex.query.expr.gflwor.GFLWOR.compile(GFLWOR.java:88)
           at

org.basex.query.expr.gflwor.ForLet.compile(ForLet.java:43)
           at

org.basex.query.expr.gflwor.GFLWOR.compile(GFLWOR.java:88)
           at org.basex.query.func.StaticFunc.comp(StaticFunc.java:69)

           at

org.basex.query.func.StaticFuncCall.compile(StaticFuncCall.java:64)
           at

org.basex.query.expr.gflwor.GFLWOR.compile(GFLWOR.java:94)
           at org.basex.query.func.StaticFunc.comp(StaticFunc.java:69)

           at

org.basex.query.func.StaticFuncCall.compile(StaticFuncCall.java:64)
           at

org.basex.query.expr.gflwor.GFLWOR.compile(GFLWOR.java:94)
           at org.basex.query.func.StaticFunc.comp(StaticFunc.java:69)

           at

org.basex.query.func.StaticFuncs.compile(StaticFuncs.java:184)
           at

org.basex.query.func.fn.FnFunctionLookup.opt(FnFunctionLookup.java:34)
           at

org.basex.query.func.StandardFunc.optimize(StandardFunc.java:77)
           at org.basex.query.expr.Arr.compile(Arr.java:43)

           at

org.basex.query.expr.gflwor.ForLet.compile(ForLet.java:43)
           at

org.basex.query.expr.gflwor.GFLWOR.compile(GFLWOR.java:88)
           at org.basex.query.func.StaticFunc.comp(StaticFunc.java:69)

           at

org.basex.query.func.StaticFuncCall.compile(StaticFuncCall.java:64)
           at

org.basex.query.expr.gflwor.ForLet.compile(ForLet.java:43)
           at

org.basex.query.expr.gflwor.GFLWOR.compile(GFLWOR.java:88)
           at

org.basex.query.expr.gflwor.ForLet.compile(ForLet.java:43)
           at

org.basex.query.expr.gflwor.GFLWOR.compile(GFLWOR.java:88)
           at org.basex.query.func.StaticFunc.comp(StaticFunc.java:69)

           at

org.basex.query.func.StaticFuncCall.compile(StaticFuncCall.java:64)
           at

org.basex.query.expr.gflwor.GFLWOR.compile(GFLWOR.java:94)
           at org.basex.query.func.StaticFunc.comp(StaticFunc.java:69)

           at

org.basex.query.func.StaticFuncCall.compile(StaticFuncCall.java:64)
           at

org.basex.query.expr.gflwor.GFLWOR.compile(GFLWOR.java:94)
           at org.basex.query.func.StaticFunc.comp(StaticFunc.java:69)

           at

org.basex.query.func.StaticFuncs.compile(StaticFuncs.java:184)
           at

org.basex.query.func.fn.FnFunctionLookup.opt(FnFunctionLookup.java:34)
           at

org.basex.query.func.StandardFunc.optimize(StandardFunc.java:77)
           at org.basex.query.expr.Arr.compile(Arr.java:43)

           at

org.basex.query.expr.gflwor.ForLet.compile(ForLet.java:43)
           at

org.basex.query.expr.gflwor.GFLWOR.compile(GFLWOR.java:88)
           at org.basex.query.func.StaticFunc.comp(StaticFunc.java:69)

           at

org.basex.query.func.StaticFuncCall.compile(StaticFuncCall.java:64)
           at

org.basex.query.expr.gflwor.ForLet.compile(ForLet.java:43)
           at

org.basex.query.expr.gflwor.GFLWOR.compile(GFLWOR.java:88)
           at

org.basex.query.expr.gflwor.ForLet.compile(ForLet.java:43)
           at

org.basex.query.expr.gflwor.GFLWOR.compile(GFLWOR.java:88)
           at org.basex.query.func.StaticFunc.comp(StaticFunc.java:69)

           at

org.basex.query.func.StaticFuncCall.compile(StaticFuncCall.java:64)
           at

org.basex.query.expr.gflwor.GFLWOR.compile(GFLWOR.java:94)
           at org.basex.query.func.StaticFunc.comp(StaticFunc.java:69)

           at

org.basex.query.func.StaticFuncCall.compile(StaticFuncCall.java:64)
           at

org.basex.query.expr.gflwor.GFLWOR.compile(GFLWOR.java:94)
           at org.basex.query.func.StaticFunc.comp(StaticFunc.java:69)

           at

org.basex.query.func.StaticFuncs.compile(StaticFuncs.java:184)
           at

org.basex.query.func.fn.FnFunctionLookup.opt(FnFunctionLookup.java:34)
           at

org.basex.query.func.StandardFunc.optimize(StandardFunc.java:77)
           at org.basex.query.expr.Arr.compile(Arr.java:43)

           at

org.basex.query.expr.gflwor.ForLet.compile(ForLet.java:43)
           at

org.basex.query.expr.gflwor.GFLWOR.compile(GFLWOR.java:88)
           at org.basex.query.func.StaticFunc.comp(StaticFunc.java:69)

           at

org.basex.query.func.StaticFuncCall.compile(StaticFuncCall.java:64)
           at

org.basex.query.expr.gflwor.ForLet.compile(ForLet.java:43)
           at

org.basex.query.expr.gflwor.GFLWOR.compile(GFLWOR.java:88)
           at

org.basex.query.expr.gflwor.ForLet.compile(ForLet.java:43)
           at

org.basex.query.expr.gflwor.GFLWOR.compile(GFLWOR.java:88)
           at org.basex.query.func.StaticFunc.comp(StaticFunc.java:69)

           at

org.basex.query.func.StaticFuncCall.compile(StaticFuncCall.java:64)
           at

org.basex.query.expr.gflwor.GFLWOR.compile(GFLWOR.java:94)
           at org.basex.query.func.StaticFunc.comp(StaticFunc.java:69)

           at

org.basex.query.func.StaticFuncCall.compile(StaticFuncCall.java:64)
           at

org.basex.query.expr.gflwor.GFLWOR.compile(GFLWOR.java:94)
           at org.basex.query.func.StaticFunc.comp(StaticFunc.java:69)

           at

org.basex.query.func.StaticFuncs.compile(StaticFuncs.java:184)
           at

org.basex.query.func.fn.FnFunctionLookup.opt(FnFunctionLookup.java:34)
           at

org.basex.query.func.StandardFunc.optimize(StandardFunc.java:77)
           at org.basex.query.expr.Arr.compile(Arr.java:43)

           at

org.basex.query.expr.gflwor.ForLet.compile(ForLet.java:43)
           at

org.basex.query.expr.gflwor.GFLWOR.compile(GFLWOR.java:88)
           at org.basex.query.func.StaticFunc.comp(StaticFunc.java:69)

           at

org.basex.query.func.StaticFuncCall.compile(StaticFuncCall.java:64)
           at

org.basex.query.expr.gflwor.ForLet.compile(ForLet.java:43)
           at

org.basex.query.expr.gflwor.GFLWOR.compile(GFLWOR.java:88)
           at

org.basex.query.expr.gflwor.ForLet.compile(ForLet.java:43)
           at

org.basex.query.expr.gflwor.GFLWOR.compile(GFLWOR.java:88)
           at org.basex.query.func.StaticFunc.comp(StaticFunc.java:69)

           at

org.basex.query.func.StaticFuncCall.compile(StaticFuncCall.java:64)
           at

org.basex.query.expr.gflwor.GFLWOR.compile(GFLWOR.java:94)
           at org.basex.query.func.StaticFunc.comp(StaticFunc.java:69)

           at

org.basex.query.func.StaticFuncCall.compile(StaticFuncCall.java:64)
           at

org.basex.query.expr.gflwor.GFLWOR.compile(GFLWOR.java:94)
           at org.basex.query.func.StaticFunc.comp(StaticFunc.java:69)

           at

org.basex.query.func.StaticFuncs.compile(StaticFuncs.java:184)
           at

org.basex.query.func.fn.FnFunctionLookup.opt(FnFunctionLookup.java:34)
           at

org.basex.query.func.StandardFunc.optimize(StandardFunc.java:77)
           at org.basex.query.expr.Arr.compile(Arr.java:43)

           at

org.basex.query.expr.gflwor.ForLet.compile(ForLet.java:43)
           at

org.basex.query.expr.gflwor.GFLWOR.compile(GFLWOR.java:88)
           at org.basex.query.func.StaticFunc.comp(StaticFunc.java:69)

           at

org.basex.query.func.StaticFuncCall.compile(StaticFuncCall.java:64)
           at

org.basex.query.expr.gflwor.ForLet.compile(ForLet.java:43)
           at

org.basex.query.expr.gflwor.GFLWOR.compile(GFLWOR.java:88)
           at

org.basex.query.expr.gflwor.ForLet.compile(ForLet.java:43)
           at

org.basex.query.expr.gflwor.GFLWOR.compile(GFLWOR.java:88)
           at org.basex.query.func.StaticFunc.comp(StaticFunc.java:69)

           at

org.basex.query.func.StaticFuncCall.compile(StaticFuncCall.java:64)
           at

org.basex.query.expr.gflwor.GFLWOR.compile(GFLWOR.java:94)
           at org.basex.query.func.StaticFunc.comp(StaticFunc.java:69)

           at

org.basex.query.func.StaticFuncCall.compile(StaticFuncCall.java:64)
           at

org.basex.query.expr.gflwor.GFLWOR.compile(GFLWOR.java:94)
           at org.basex.query.func.StaticFunc.comp(StaticFunc.java:69)

           at

org.basex.query.func.StaticFuncs.compile(StaticFuncs.java:184)
           at

org.basex.query.func.fn.FnFunctionLookup.opt(FnFunctionLookup.java:34)
           at

org.basex.query.func.StandardFunc.optimize(StandardFunc.java:77)
           at org.basex.query.expr.Arr.compile(Arr.java:43)

           at

org.basex.query.expr.gflwor.ForLet.compile(ForLet.java:43)
           at

org.basex.query.expr.gflwor.GFLWOR.compile(GFLWOR.java:88)
           at org.basex.query.func.StaticFunc.comp(StaticFunc.java:69)

           at

org.basex.query.func.StaticFuncCall.compile(StaticFuncCall.java:64)
           at

org.basex.query.expr.gflwor.ForLet.compile(ForLet.java:43)
           at

org.basex.query.expr.gflwor.GFLWOR.compile(GFLWOR.java:88)
           at

org.basex.query.expr.gflwor.ForLet.compile(ForLet.java:43)
           at

org.basex.query.expr.gflwor.GFLWOR.compile(GFLWOR.java:88)
           at org.basex.query.func.StaticFunc.comp(StaticFunc.java:69)

           at

org.basex.query.func.StaticFuncCall.compile(StaticFuncCall.java:64)
           at

org.basex.query.expr.gflwor.GFLWOR.compile(GFLWOR.java:94)
           at org.basex.query.func.StaticFunc.comp(StaticFunc.java:69)

           at

org.basex.query.func.StaticFuncCall.compile(StaticFuncCall.java:64)
           at

org.basex.query.expr.gflwor.GFLWOR.compile(GFLWOR.java:94)
           at org.basex.query.func.StaticFunc.comp(StaticFunc.java:69)

           at

org.basex.query.func.StaticFuncs.compile(StaticFuncs.java:184)
           at

org.basex.query.func.fn.FnFunctionLookup.opt(FnFunctionLookup.java:34)
           at

org.basex.query.func.StandardFunc.optimize(StandardFunc.java:77)
           at org.basex.query.expr.Arr.compile(Arr.java:43)

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Re: [basex-talk] Improper Use? Potential bug?