Opened 6 months ago
Closed 6 months ago
#32843 closed defect (invalid)
Saving and loading expressions with symbolic functions makes print crash
Reported by: | rburing | Owned by: | |
---|---|---|---|
Priority: | major | Milestone: | sage-duplicate/invalid/wontfix |
Component: | symbolics | Keywords: | save, load, function, expression, print |
Cc: | Merged in: | ||
Authors: | Reviewers: | Michael Orlitzky | |
Report Upstream: | N/A | Work issues: | |
Branch: | Commit: | ||
Dependencies: | Stopgaps: |
Description
The following innocent code crashes SageMath 9.4 as well as 9.5.beta5:
f = function('f')(x) save(f, 'f') f = load('f.sobj') print(f)
Output:
TypeError Traceback (most recent call last) ~/Downloads/sage-9.5.beta5/local/var/lib/sage/venv-python3.7/lib/python3.7/site-packages/sage/symbolic/pynac_impl.pxi in sage.symbolic.expression.py_print_function_pystring (build/cythonized/sage/symbolic/expression.cpp:10229)() 499 olist = [func._name] 500 olist.extend(['(', ', '.join(map(repr, args)), ')']) --> 501 return ''.join(olist) 502 503 cdef stdstring* py_print_function(unsigned id, args): TypeError: sequence item 0: expected str instance, bytes found ... ------------------------------------------------------------------------ Unhandled SIGSEGV: A segmentation fault occurred. This probably occurred because a *compiled* module has a bug in it and is not properly wrapped with sig_on(), sig_off(). Python will now terminate. ------------------------------------------------------------------------ Segmentation Fault
Originally reported in Ask SageMath question #59632.
Change History (3)
comment:1 Changed 6 months ago by
- Milestone changed from sage-9.5 to sage-duplicate/invalid/wontfix
- Status changed from new to needs_review
comment:2 Changed 6 months ago by
- Reviewers set to Michael Orlitzky
- Status changed from needs_review to positive_review
comment:3 Changed 6 months ago by
- Resolution set to invalid
- Status changed from positive_review to closed
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dup of #30018