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.kre...@known2u.com<mailto:buddy.kre...@known2u.com>
o: 860-800-6677  ext: 501
c: 860-986-4830

From: Michael Seiferle <m...@basex.org>
Sent: Tuesday, June 4, 2019 6:15 AM
To: Buddy Kresge <buddy.kre...@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.kre...@known2u.com<mailto:buddy.kre...@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<mailto: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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