Created attachment 1727313 [details]
Sage crash report on F33

Description of problem:

Sage crashes instantly on startup since updates that happened in the last week or so (more recently on F33 than on F32.)

$ sage
...
┌────────────────────────────────────────────────────────────────────┐
│ SageMath version 9.1, Release Date: 2020-05-20                     │
│ Using Python 3.9.0. Type "help()" for help.                        │
└────────────────────────────────────────────────────────────────────┘
---------------------------------------------------------------------------
---------------------------------------------------------------------------
SystemError                                  Python 3.9.0: /usr/bin/python3
                                                   Sat Nov  7 04:26:19 2020
A problem occurred executing Python code.  Here is the sequence of function
calls leading up to the error, with the most recent (innermost) call last.

...

cypari2/stack.pyx in cypari2.stack.new_gen()

cypari2/stack.pyx in cypari2.stack.new_gen_noclear()

SystemError: new_gen() argument not on PARI stack, not on PARI heap and not a universal constant

See the attached crash report for more details.


Version-Release number of selected component (if applicable):

sagemath-9.1-4.fc33.x86_64
pari-2.11.4-2.fc33.x86_64
python3-cypari2-2.1.1-8.fc33.x86_64
python3-ipython-7.18.1-1.fc33.noarch

How reproducible:
Perfectly.

Steps to Reproduce:
1. type 'sage'
2. Observe crash
3. Cry

Actual results:

Crash

Expected results:

Amazing mathematics

Additional info:

Tried deleting .sage directly as well as installing sagemath freshly on a F33 host that has never had sage on it before, same result.