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Question: reproducible kernel crash in V 2023 when calling rationalize

Question:reproducible kernel crash in V 2023 when calling rationalize

nm 9899 Maple 2023
crash rationalize
May 28 2023
0

in V 2023 on windows, I can get server.exe to crash each time on this call. Do others see the same problem? I have not tried this on V 2022 to see if this new bug or not.

make sure to save ALL your work before trying this. I found Maple itself hangs also after the server.exe crash, so might not be able to save any work you have in your worksheets that are open at the time. 

I do not know if there is a workaround this. Does the program need to check for something to make sure it will not crash Maple before using this function? try/catch does not help with this. So now my program simply crash each time when it reads this problem.

restart;


expr:=1/(3*2^(2/3)*((2^(1/3)*(1+(256*u^3+1)^(1/2))^(2/3)-8*u)/(1+(256*u^3+1)^(1/2))^(1/3))^(1/2)+3*(1/(1+(256*u^3+1)^(1/2))^(1/3)*((8*2^(1/6)*u-2^(1/2)*(1+(256*u^3+1)^(1/2))^(2/3))*((2^(1/3)*(1+(256*u^3+1)^(1/2))^(2/3)-8*u)/(1+(256*u^3+1)^(1/2))^(1/3))^(1/2)-4*2^(1/6)*(1+(256*u^3+1)^(1/2))^(1/3))/((2^(1/3)*(1+(256*u^3+1)^(1/2))^(2/3)-8*u)/(1+(256*u^3+1)^(1/2))^(1/3))^(1/2))^(1/2)*2^(7/12)-16*u);


rationalize(expr);

Attached worksheet.
 

433648

> 

interface(version);

`Standard Worksheet Interface, Maple 2023.0, Windows 10, March 6 2023 Build ID 1689885`

> 

restart;

433648

> 

expr:=1/(3*2^(2/3)*((2^(1/3)*(1+(256*u^3+1)^(1/2))^(2/3)-8*u)/(1+(256*u^3+1)^(1/2))^(1/3))^(1/2)+3*(1/(1+(256*u^3+1)^(1/2))^(1/3)*((8*2^(1/6)*u-2^(1/2)*(1+(256*u^3+1)^(1/2))^(2/3))*((2^(1/3)*(1+(256*u^3+1)^(1/2))^(2/3)-8*u)/(1+(256*u^3+1)^(1/2))^(1/3))^(1/2)-4*2^(1/6)*(1+(256*u^3+1)^(1/2))^(1/3))/((2^(1/3)*(1+(256*u^3+1)^(1/2))^(2/3)-8*u)/(1+(256*u^3+1)^(1/2))^(1/3))^(1/2))^(1/2)*2^(7/12)-16*u);

1/(3*2^(2/3)*((2^(1/3)*(1+(256*u^3+1)^(1/2))^(2/3)-8*u)/(1+(256*u^3+1)^(1/2))^(1/3))^(1/2)+3*(((8*2^(1/6)*u-2^(1/2)*(1+(256*u^3+1)^(1/2))^(2/3))*((2^(1/3)*(1+(256*u^3+1)^(1/2))^(2/3)-8*u)/(1+(256*u^3+1)^(1/2))^(1/3))^(1/2)-4*2^(1/6)*(1+(256*u^3+1)^(1/2))^(1/3))/((1+(256*u^3+1)^(1/2))^(1/3)*((2^(1/3)*(1+(256*u^3+1)^(1/2))^(2/3)-8*u)/(1+(256*u^3+1)^(1/2))^(1/3))^(1/2)))^(1/2)*2^(7/12)-16*u)

> 

rationalize(expr);

Download crash_may_28_2023.mw
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